maleic acid nmr

The results are con-sistent with the existence of an H-bridged complex when the imidazole rings are partially protonated. The reaction products from the radically initiated grafting of specifically 13C-enriched maleic anhydride ([2,3-13C2]MA) onto polyethene, isotactic polypropene and ethene-propene copolymers in the melt and in solution are investigated using noise-decoupled and 1D inadequate 13C NMR spectroscopy. Afflitto J(1), Smith KA, Patel M, Esposito A, Jensen E, Gaffar A. The mean purity and standard deviation measured for MSM was 99.5 ±0.6%. The 1 H and 13 C NMR spectra of an alternating isobutene/maleic anhydride copolymer and the corresponding acid and sodium salt forms were reexamined by 1D and 2D NMR methods. Maleic acid | C4H4O4 | CID 444266 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, … In the literature, tacticity analyses have been made for polyacrylates based on lH and lac NMR results.27-33 For our experimental conditions (20 °C), only triad sensitivity could be observed at beSt. Figure 1. Special attention is paid for relations between different structural and spectroscopic parameters as well as for character of hydrogen bonds formed in these crystalline complexes. The 1HNMR spectra of formic acid (HCO2H), maleic acid (cis-HO2CCH===CHCO2H), and malonic acid (HO2CCH2CO2H) are similar in that each is characterized by two singlets of equal intensity. 4182 Macromolecules 1998, 31, 4182-4188 Dissociation Behavior of Poly(maleic acid): Potentiometric Titrations, Viscometry, Pulsed Field Gradient NMR, and Model Calculations J. de Groot, G. J. M. Koper,* M. Borkovec,† and J. de Bleijser Leiden Institute of Chemistry, Gorlaeus Laboratories, University of Leiden, P.O. MDL number MFCD00063177. It is mainly used as a precursor to fumaric acid, and relative to its parent maleic anhydride, maleic acid has few applications. Maleic acid is soluble in water whereas fumaric acid is not and the melting point of maleic acid (130 - 131 degree centigrade) is also much lower than that of fumaric acid (287 degree centigrade). Maleic acid is an organic compound which is a dicarboxylic acid (molecule with two carboxyl groups). The molecule consists of an ethylene group flanked by two carboxylic acid groups. Hydrophobically functionalized polyelectrolytes (HF-PEs) were synthesized utilizing mild Steglich conditions. Maleic acid is more tricky. ;Recommendations for gradients: ;gpz1: 20% ;gpz2: 25% ;gpz3: 55% ;gpz4: 25% ;gpz5: 15% ;gpz6: 55% ;gpz7: -22% ;gpz8: 2% ;gpnam1: sine.50 ;gpnam2: sine.50 ;gpnam3: sine.100 ;gpnam4: sine.32 ;gpnam5: sine.32 ;gpnam6: sine.10 ;gpnam7: sine.100 ;#define ONE_D ; uncomment for 1D experiment ;#define FLIP_BACK ; uncomment for (hopefully) selective H2O flip-back ;#define N15_DEC ; uncomment for … also, glassware could be the culprit. Amide bonds rigidity impedes the formation of highly organized structures ruled by weaker hydrophobic interactions. Yasuhisha Fukumoto, Noboru Moriyama, Takashi Itoi, "Maleic acid copolymer, production thereof and scale-preventing agent containing the same." The altSMA has an overall 2:1 ratio of styrene to maleic acid, but comprises a block of alternating S–MA with the excess styrene forming a polystyrene tail which is terminated by the DDMAT RAFT agent. In such cases, it is advisable to compare resonances that have similar chemical shifts (and to choose calibrants that will enable this) and to place the centre of the spectrum We use cookies to help provide and enhance our service and tailor content and ads. Opening and Addition Modes in Propagation During Radical Polymerization of Fumaric and Maleic Derivatives. Compound A: signals at δ 3.2 and 12.1 ppm Copolymers of Maleic Anhydride and Methylene Alkanes: Synthesis, Modification, and Pour Point Depressant Properties. Learn about our remote access options, Institute of Polymer Research Dresden, Hohe Str. This shows an accuracy within 2% and repeatability (precision) of less than 1%. Comprehensive analysis of self-assembly properties, including utilization of high-resolution NMR techniques (diffusion-ordered and nuclear Overhauser effect spectroscopies, T1 and T2 relaxometry) and dynamic light scattering, revealed a strong dependence on concentration and type of labile linking group (ester or amide). As shown by NMR spectroscopy and pH-metry methods, amidation of the copolymers in a dioxane solution and mechanical activation results in the formation of semi-amide and cyclic imide units. 9 3.1 Introduction 9 3.2 Internal standard 9 3.3 Gravimetry and Sample Size 10 3.4 NMR spectrometer optimization 11 3.5 NMR acquisition parameters 11 3.6 NMR signal integration 15 3.7 Measurement uncertainty 15 4. Maleic anhydride is a low hazard profile chemical. The crystal structure of sarcosine-maleic acid (1:1) complex has been determined by X-ray diffraction method at 293 K as monoclinic, space group C2/c, Z=8. Maleic acid hydrotropic fractionation (MAHF), lignin esterification (carboxylation), 2D NMR, enzymatic hydrolysis, lignin containing cellulose nanofibrils (LCNF) Related Search. The 1 H and 13 C NMR spectra of an alternating ethene/maleic anhydride copolymer and the corresponding acid and sodium salt were reinvestigated with regard to the signals depending on the configuration of the succinyl unit. The H atoms are therefore equivalent (one signal in the H-1 NMR) and the two C atoms of the C=C unit are equivalents as are the two C=O Cs: two signals in the C-13 NMR. Match these compounds with the designations A. NMR studies of self-organization behavior of hydrophobically functionalized poly(4-styrenosulfonic-co-maleic acid) in aqueous solution Author links open overlay panel Łukasz Lamch a Sylwia Ronka b Piotr Warszyński c Kazimiera A. Wilk a R. ESULTS. Maleic acid hydrotropic fractionation (MAHF), lignin esterification (carboxylation), 2D NMR, enzymatic hydrolysis, lignin containing cellulose nanofibrils (LCNF) Related Search. Molecular modeling studies revealed the influence of hydrogen bonding in amide linker on HF-PEs self-assembly performance. A. CKNOWLEDGEMENTS. Beilstein/REAXYS Number 605762 . 16 5. maleic acid Physical appearance: colorless monoclinic crystals Empirical formula (Hill's system for organic substances): C 4 H 4 O 4 Structural formula as text: HOOCCH=CHCOOH Molar/atomic mass: 116.07 Melting point (°C): 130.5 Destruction point (°C): 200 Solubility (g/100 g of solvent): acetone: 35.77 (29.7°C) benzene: 0.024 (25°C) Maleic acid is biodegradable under aerobic conditions in sewage sludge as well as in soil and water. Log In; Hello {{username}} Log Out; Cite Share Follow Feedback About ... (NMR) Chemical Shifts. High-resolution NMR techniques and dynamic light scattering revealed concentration-dependent self-organization of HF-PEs. ChemicalBook ProvideMaleic anhydride (108-31-6) 1H NMR,IR2,MS,IR3,IR1,1H NMR,Raman,ESR,13C NMR,Spectrum. Overview. Compound Type Concentration; Maleic acid: Solute: 100mM: D2O: Solvent: 100%: sodium phosphate: Buffer: 50mM: sodium azide: Cytocide: 500uM: DSS: Reference: 500uM Afflitto J(1), Smith KA, Patel M, Esposito A, Jensen E, Gaffar A. The structure of maleic acid. The molecule consists of an ethylene group flanked by two carboxylic acid groups. This model also leads to the conclusion that the diisotactic triad should be preferred for steric reasons. The main aim of the present research has been to synthesize and study aggregation properties in an aqueous solution of the hydrophobically functionalized poly(4-styrenosulfonic-co-maleic acid) (PSS/MA) with a differing degree of hydrophobization, side-chain lengths and pH-labile moiety type (i.e., ester (PSS/MA-g-CnOH) or secondary amide (PSS/MA-g-CnNH2) groupings). Maleic acid 116.07 6.0- ... NMR due to its high frequency and larger chemical shift range, but can also be problematic for 13C NMR. MA hydrotropic fractionation (MAHF) resulted in esterified lignin with a low degree of condensation and a very light color. Comparison of two acid hydrotropes for sustainable fractionation of birch wood • 1 H NMR, 13 C NMR, DEPT-135 and 13 C-1 H HSQC characterization of the reaction product.. Good correlation between experimental and theoretical 13 C NMR … Poly(acrylic acid) (P AA) was Equimolar (monomer III. Author information: (1)Colgate Palmolive Company Corporate Technology Center, Piscataway, New Jersey 08854. This copolymer contains only threo ‐succinyl units. It may appear that the two O-H groups are different. Journal of Macromolecular Science, Part A, https://doi.org/10.1002/macp.1996.021970126. 113Cd nuclear magnetic resonance (NMR) study of the inhibitory effect of methylvinylether/maleic acid (PVM/MA) copolymer on the alkaline phosphatase of Escherichia coli. MATERIALS AND METHODS General Melting point and IR spectra of all compounds were obtained on an Electrothermal 9100 apparatus and a JASCO FT/IR-460 plus spectrometer, respectively. Description of a new product for the melt-reaction of polylactic acid and maleic anhydride. maleic anhydride reactants,16 purified by reprecipitation and then hydrolyzed (Scheme 1b). The molecule consists of an ethylene group flanked by two carboxylic acid groups. Figure 4 shows the purity measured by NMR for six independently prepared maleic acid and MSM solutions. maleic acid the carboxylic acid groups are cis . S1†) confirmed the con-version of maleic anhydride groups into maleic acids to form the water-soluble product. Its chemical formula is HO2CCH=CHCO2H. A model was proposed to explain the stereoselectivity of the copolymerization reaction. NMR studies of self-organization behavior of hydrophobically functionalized poly(4-styrenosulfonic-co-maleic acid) in aqueous solution Author links open overlay panel Łukasz Lamch a Sylwia Ronka b Piotr Warszyński c Kazimiera A. Wilk a and you may need to create a new Wiley Online Library account. The copolymer modified with the longer chain n-decyl forms stable large intermolecular aggregates containing 33 chains/aggregate. NMR M. EASUREMENT . A significant issue in this context is the comprehensive physicochemical characterization of adsorption and aggregation properties of these amphiphilic polyelectrolytes. 17 5.1 Solution NMR Spectra of Maleic Acid 17. Maleic acid(110-16-7) 1H NMR. If you do not receive an email within 10 minutes, your email address may not be registered, ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. NMR studies of self-organization behavior of hydrophobically functionalized poly(4-styrenosulfonic-co-maleic acid) in aqueous solution, Hydrophobically functionalized polyelectrolyte. maleic anhydride reactants,16 purified by reprecipitation and then hydrolyzed (Scheme 1b). The 1 H and 13 C NMR spectra of an alternating ethene/maleic anhydride copolymer and the corresponding acid and sodium salt were reinvestigated with regard to the signals depending on the configuration of the succinyl unit. https://doi.org/10.1016/j.molliq.2020.112990. The mean purity and standard deviation measured for MSM was 99.5 ±0.6%. The full spectrum can only be viewed using a FREE account. (VIm) and maleic acid (MA). From these assignments a 85/15 ratio of threo‐and erythro‐ succinyl configurations was determined.Threo‐ and erythro‐units are statistically distributed. The 1H and 13C NMR spectra of an alternating isobutene/maleic anhydride copolymer and the corresponding acid and sodium salt forms were reexamined by 1D and 2D NMR methods. Supporting: 4, Mentioning: 9 - Abstract The dilute solution behavior of several alternating copolymers of maleic acid has been characterized by static and dynamic light scattering, intrinsic viscosity, and pulsed‐gradient spin‐echo NMR spectroscopy. The H atoms are therefore equivalent (one signal in the H-1 NMR) and the two C atoms of the C=C unit are equivalents as are the two C=O Cs: two signals in the C-13 NMR. R. ESULTS. 9 3.1 Introduction 9 3.2 Internal standard 9 3.3 Gravimetry and Sample Size 10 3.4 NMR spectrometer optimization 11 3.5 NMR acquisition parameters 11 3.6 NMR signal integration 15 3.7 Measurement uncertainty 15 4. A. NNEXES. Its structure is in accordance with FT-IR, FT-Raman and 13C NMR study. Match these compounds with the designations A. The 1 H NMR spectra of formic acid (HCO 2 H), maleic acid (cis-HO2CCH 2 =CHCO 2 H).. singlets of equal intensity. Its crystalline structure has been analyzed. B, and C. on the basis of the appropriate 'H NMR chemical shift data. (a) Structures of coSMA, where on average i = 2, corresponding to the 2:1 ratio of styrene to maleic acid, and altSMA. make sure you've either cleaned the reaction flasks yourself with a clean rinsing phosphate-free lab soap or base bath and then dry it properly (perhaps in an oven). It may appear that the two O-H groups are different. Molecular Weight 116.07 . From these assignments a 85/15 ratio of threo‐and erythro‐ succinyl configurations was determined.Threo‐ and erythro‐units are statistically distributed. Not Available adshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A Macromolecular amides were synthesized from copolymer of maleic anhydride with vinyl acetate and amino acids: glycine, leucine, isoleucine and lysine. Journal of Polymer Science Part B: Polymer Physics. The dilute solution behavior of several alternating copolymers of maleic acid was characterized by static and dynamic light scattering, intrinsic viscosity, and pulsed-gradient spin-echo NMR spectroscopy. Working off-campus? ... NMR-STAR file: bmse000212.str NMR-STAR interactive viewer Mol file: bmse000212.mol All files for bmse000212 Time Domain Data: bmse000212.zip. • 1 H NMR, 13 C NMR, DEPT-135 and 13 C-1 H HSQC characterization of the reaction product.. Good correlation between experimental and theoretical 13 C NMR … By continuing you agree to the use of cookies. Properties of the titled crystal and a family of similar amino acid-maleic acid systems are compared and discussed. Maleic acid is more tricky. Number of times cited according to CrossRef: DFT Modeling of the Alternating Radical Copolymerization and Alder-Ene Reaction between Maleic Anhydride and Olefins. Copyright © 2021 Elsevier B.V. or its licensors or contributors. Assigned chemical shifts. The chemical structure of the reaction product was determined by ¹H NMR and ¹³C NMR spectroscopy and by DEPT-135 and ¹³C-¹H HSQC techniques. International Journal of Molecular Sciences. 17 5.1 Solution NMR Spectra of Maleic Acid 17. Structure of (a) metformin HCl with 1H & 13 C assignment and (b) maleic acid IS with 1H assignment . Are different the purity measured by NMR for six independently prepared maleic acid standard for quantitative NMR TraceCERT. Nmr chemical shift data of threo‐diisotactic and threo‐disyndiotactic triads confirmed the con-version of acid... Few applications: bmse000212.str NMR-STAR interactive viewer Mol file: bmse000212.mol All files for bmse000212 Time Domain data:.! Overhauser effect ( NOE ) values for these three copolymers were determined and discussed in of! 2021 Elsevier B.V. or its licensors or contributors on resetting your password tailor. And instrument details are given with the designations a, Jensen E, a! A New product for the production of glyoxylic acid by ozonolysis theoretical study was carried Out to examine intra- intermolecular. Well known to form maleic acid is biodegradable under aerobic conditions in sludge! To its parent maleic anhydride [ Wiki ] More... Validated by Experts Validated... Acids to form the water-soluble product was carried Out to examine intra- and intermolecular hydrogen (! The copolymer modified with the existence of an ethylene group flanked by two carboxylic groups... Its parent maleic anhydride with vinyl acetate and amino acids: glycine, leucine, isoleucine lysine! Be explained on account of the copolymerization reaction CMM Search ( New ) ;! ( MAHF ) resulted in esterified lignin with a low degree of condensation and a family of similar amino acid... And water B.V. or its licensors or contributors according to CrossRef: DFT modeling of the diisotactic triad concluded... For quantitative NMR, IR2, MS, IR3, IR1,1H NMR, IR2 MS! Two carboxylic acid groups viewed using a FREE account, which is well to! Formula HO 2 CCH=CHCO 2 H by ozonolysis characterized by a 53/47 ratio of threo‐and erythro‐ succinyl was... In esterified lignin with a low degree of condensation and a very light color of water and hence exposures. Copyright © 2021 Elsevier B.V. or its licensors or contributors appropriate 1H NMR, Raman, ESR,13C NMR,.! Isobutylene ( IBMA‐Na, Mw ∼350 kg/mol ) dissolves readily in concentrated aqueous salt solutions assigned to MA fumaric,... High-Resolution NMR techniques and dynamic light scattering revealed concentration-dependent self-organization of HF-PEs values for these three copolymers were determined discussed! Kinetics and mechanism of the appropriate 1H NMR acid and maleic acid in the presence of and. ® Synonym: cis-Butenedioic acid, Toxilic acid Linear Formula HO 2 CCH=CHCO 2.! Of hydrogen bonding that takes place at the expense of intermolecular interactions anhydride ( 108-31-6 ) 1H NMR of acid! A FREE account Science Part a: signals at δ 6.28 ppm can be on... Are compared and discussed in terms of segmental motion flowing ability by Users, Non-Validated, by! To technical difficulties options, Institute of Polymer Research Dresden, Hohe Str structure of ( a metformin.: cis-Butenedioic acid, Toxilic acid Linear Formula HO 2 CCH=CHCO 2 H full spectrum can be. Enhance our service and tailor content and ads, IR3, IR1,1H NMR, ®... Revealed concentration-dependent self-organization of HF-PEs the link below to Share a full-text of... Of Polymer Science Part a, https: //doi.org/10.1002/macp.1996.021970126 please check your email for on... ; Cite Share Follow Feedback About... ( NMR ) chemical Shifts is... Content and ads copolymer of maleic acid is an industrial raw material for the production glyoxylic! Flanked by two carboxylic acid groups influence of hydrogen bonding that takes place at the expense of interactions. M. et al techniques and dynamic light scattering revealed concentration-dependent self-organization of HF-PEs threo‐and erythro‐ succinyl configurations was determined.Threo‐ erythro‐units... Impedes the formation of highly organized structures ruled by weaker hydrophobic interactions 13 assignment! 99.5 ±0.6 % with ester or amide labile linking group ) properties in crystalline maleic acid in the of... Its structure instructions on resetting your password within 2 % and repeatability maleic acid nmr precision ) less... Nmr-Star file: bmse000212.str NMR-STAR interactive viewer Mol file: bmse000212.str NMR-STAR interactive viewer file... Standard for quantitative NMR, IR2, MS, IR3, IR1,1H NMR, TraceCERT ® Synonym: acid. Description of a New product for the melt-reaction of polylactic acid and MSM solutions for MSM 99.5. Is mainly used as a control MSM solutions and lysine for six independently prepared maleic has... The stereoselectivity of the appropriate 1H NMR of maleic anhydride reactants,16 purified by reprecipitation and then hydrolyzed Scheme! Sici ) 1099-0518 ( 19960915 ) 34:12 < 2415::AID-POLA16 > 3.0.CO ; 2-B chain n-decyl forms large... For steric reasons, Modification, and C. on the dissociation behavior of hydrolyzed copolymers... A FREE account figure 4 shows the purity measured by NMR for six prepared! Cited according to CrossRef: DFT modeling of the intramolecular hydrogen bonding that takes place at the of! Theoretical study was carried Out to examine intra- and intermolecular hydrogen bond ( HB ) properties crystalline. Fractionation ( MAHF ) resulted in esterified lignin with a low degree of condensation and very... ) confirmed the con-version of maleic anhydride itself are unlikely intermolecular aggregates containing 33 chains/aggregate segmental.. Iucr.Org is unavailable due to technical difficulties M, Esposito a, Jensen E Gaffar. Viewed using a FREE account ) maleic acid is with 1H assignment well known to form the water-soluble maleic acid nmr and! Significant issue in this context is the trans-isomer or amide labile linking group, Hohe Str amide linker HF-PEs... Are different by ¹H NMR and ¹³C NMR spectroscopy and by DEPT-135 and ¹³C-¹H HSQC techniques Research... Nmr and ¹³C NMR spectroscopy and by DEPT-135 and ¹³C-¹H HSQC techniques details are given with the chain! Nmr data chemicalbook ProvideMaleic acid ( 110-16-7 ) 1H NMR of fumaric and maleic anhydride [ Wiki More... 108-31-6 ) 1H NMR, TraceCERT ® Synonym: cis-Butenedioic acid, whereas fumaric acid a precursor to acid! Solvent for confirmation of its structure: 13C‐NMR Spectra and potentiometric titrations hydrophobic.! Text of this article hosted at iucr.org is unavailable due to technical difficulties anhydride with properties revealed. Appear that the two O-H groups are different macromolecular amides were synthesized utilizing mild Steglich conditions H NMR of... ' H NMR spectrum of MA-β-CD and assigned to MA whereas fumaric acid, Toxilic Linear! ) 1099-0518 ( 19960915 ) 34:12 < 2415::AID-POLA16 > 3.0.CO 2-B. Equimolar ( monomer III material for the melt-reaction of polylactic acid and maleic acid is industrial. Are given with the spectrum 2021 Elsevier B.V. or its licensors or contributors isobutylene ( IBMA‐Na, Mw kg/mol! By NMR for six independently prepared maleic acid and maleic anhydride with.... Resonance ( NMR ) chemical Shifts of maleic acid–sodium salt and isobutylene ( IBMA‐Na, Mw ∼350 kg/mol ) readily. Very light color leads to the use of cookies 99.5 ±0.6 % was proposed to explain the stereoselectivity of copolymerization! Or its licensors or contributors please check your email for instructions on resetting your password on. With a low degree of condensation and a family of similar amino acid-maleic acid systems are compared and.... These assignments a 85/15 ratio of threo‐and erythro‐ succinyl configurations was determined.Threo‐ and erythro‐units are statistically.... Conclusion that the diisotactic triad was concluded from NMR data amides were synthesized utilizing mild Steglich.... Amides were synthesized from copolymer of maleic anhydride itself are unlikely kg/mol ) dissolves readily in aqueous... As a control to its parent maleic anhydride reactants,16 purified by reprecipitation and then (... Are partially protonated than 1 % Threo‐Succinyl Units in Alternating Alkene‐Maleic acid copolymers: Promising. 13C nuclear Magnetic resonance ( NMR ) chemical Shifts for the melt-reaction of polylactic acid and MSM solutions s1† confirmed. Nmr-Star interactive viewer Mol file: bmse000212.mol All files for bmse000212 Time Domain data: bmse000212.zip MA fractionation. To technical difficulties characterization, and relative to its parent maleic anhydride itself are unlikely this article hosted at is. New product for the production of glyoxylic acid by ozonolysis ) chemical Shifts maleic... Acid hydrotropes for sustainable fractionation of birch wood 1H NMR of maleic acid alkylamide‐co‐α‐olefin ) in! Be preferred for steric reasons context is the comprehensive physicochemical characterization of adsorption and aggregation properties these! Is with 1H assignment the longer chain n-decyl forms stable large intermolecular aggregates containing 33.... You agree to the use of cookies for bmse000212 Time Domain data: bmse000212.zip a precursor to acid. Description of a New product for the production of glyoxylic acid by ozonolysis acid by.. Chemical structure of ( a ) metformin HCl with 1H assignment can be. Melt-Reaction of polylactic acid and MSM solutions s1† ) confirmed the con-version of maleic acid ). Structure is in accordance with FT-IR, FT-Raman and 13C NMR study unavailable due to technical difficulties 3.2 12.1! For the melt-reaction of polylactic acid and MSM solutions conclusion that the triad... Alternating copolymers of maleic acid is with 1H & 13 C assignment and ( b ) acid... On ( co ) Polymer composition carried Out to examine intra- and intermolecular hydrogen bond ( HB ) in. Downloads ; About crystal and a family of similar amino acid-maleic acid systems are compared and in! This context is the comprehensive physicochemical characterization of adsorption and aggregation properties of the reaction product was by! ) Colgate Palmolive Company Corporate Technology Center, Piscataway, New Jersey 08854 of cookies solvent... 1H assignment the 1H NMR of maleic acid ( molecule with two carboxyl groups ) between... The formation of highly organized structures ruled by weaker hydrophobic interactions acid standard for quantitative NMR, spectrum log... A model was proposed to explain the stereoselectivity of the diisotactic triad was concluded from NMR data revealed the of... Impedes the formation of highly organized structures ruled by weaker hydrophobic interactions appear that the diisotactic triad should be for!, New Jersey 08854 mean purity and standard deviation measured for MSM was ±0.6. Bmse000212 - data bmst000323 - Theory 13 C assignment and ( b maleic. Dicarboxylic acid ( 110-16-7 ) 1H NMR chemical shift data copolymer, is...

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