Allowable subheadings

((E)-N-4-(1,2,3,4-tetrahydroisoquinolin-2-yl)butyl)-3-phenylacrylamide Chemical MeSH Browser

((p-(N-acrylamino)phenyl)mercuric chloride) Chemical MeSH Browser

(2E)-N,N-dibutyl-3-(4-hydroxy-3-methoxyphenyl)acrylamide Chemical MeSH Browser

(E)-3-((2,3-trans)-2-(4-hydroxy-3-methoxyphenyl)-3-hydroxymethyl-2,3-dihydrobenzo(b)(1,4)dioxin-6-yl)-N-(4-hydroxyphenethyl)acrylamide Chemical MeSH Browser

(E)-3-(1H-Indol-3-yl)-N-(2,4,6-trimethoxyphenyl)acrylamide Chemical MeSH Browser

(E)-3-(2-bromophenyl)-N-(4-methyl-3-(4-pyridin-3-yl-pyrimidin-2-ylamino)phenyl)acrylamide Chemical MeSH Browser

(E)-methyl 4-(3-(4-hydroxyphenyl)-N-methylacrylamido) butanoate Chemical MeSH Browser

(R,E)-N-(2-hydroxy-2,3-dihydro-1H-inden-4-yl)-3-(2-(piperidin-1-yl)-4-(trifluoromethyl)phenyl)-acrylamide Chemical MeSH Browser

1-(4-(6-chloro-7-(2-fluorophenyl)quinazolin-4-yl)piperazin-1-yl)prop-2-en-1-one Chemical MeSH Browser

11-acrylaminoundecanoic acid Chemical MeSH Browser

2-((2-acrylamido-5-methoxy-4-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)(methyl)amino)-N,N-dimethylethan-1-amine oxide Chemical MeSH Browser

2-(2,6-dichloro-4-((3-furan-2-ylacryloylamino)methyl)benzoylamino)-3-((thiazolidine-4-carbonyl)amino)propionic acid Chemical MeSH Browser

2-(4-hydroxyphenyl)-3-phenylpent-2-enoic acid (4-(2-dimethylaminoethoxy)phenyl)amide Chemical MeSH Browser

2-acrylamido-2-methylpropanesulfonate Chemical MeSH Browser

2-acrylamidoquinoline Chemical MeSH Browser

2-carboxyisopropylacrylamide Chemical MeSH Browser

2-cyano-3-(1-(3-(dimethylamino)propyl)-2-methyl-1H-indol-3-yl)-N-octylacrylamide Chemical MeSH Browser

2-cyano-3-(3-hydroxyphenyl)acrylamide Chemical MeSH Browser

2-cyano-3-cyclopropyl-3-hydroxy-N-(3'-methyl-4'-(trifluoromethyl)phenyl)propenamide Chemical MeSH Browser

2-cyano-N-(2,6-dimethoxypyrimidin-4-yl)-3-(4-(dimethylamino)phenyl)acrylamide Chemical MeSH Browser

2-cyano-N-(2-(2-(2-methoxyethoxy)ethoxy)ethyl)-3-(6-(piperidin-1-yl)naphthalen-2-yl)acrylamide Chemical MeSH Browser

2-cyano-N-octyl-3-(1-(3-dimethylaminopropyl)-1H-indol-3-yl)acrylamide Chemical MeSH Browser

2-formylpyrrole-4-acrylamide Chemical MeSH Browser

2-methacrylamidobutyl nitrilotriacetic acid Chemical MeSH Browser

2-methyl-N-phenyl-2-propenamide Chemical MeSH Browser

2-thiomorpholinoethylacrylamide Chemical MeSH Browser

3-(1-((2,4-dichlorophenyl)methyl)-5-fluoro-3-methyl-1H-indol-7-yl)-N-((4,5-dichloro-2-thienyl)sulfonyl)-2-propenamide Chemical MeSH Browser

3-(2-(2,2-dimethylpropylsulfanyl)pyridin-3-yl)-N-(3-hydroxycyclohexyl)acrylamide Chemical MeSH Browser

3-(2-(4-chlorophenylsulfanyl)phenyl)-N-(4-dimethylaminobutyl)acrylamide Chemical MeSH Browser

3-(2-(acrylamido)-ethyldimethyl ammonio)propane sulfonate Chemical MeSH Browser

3-(3,4-dimethoxyphenyl)-N-(4-hydroxyphenethyl)acrylamide Chemical MeSH Browser

3-(3,5-dibromophenyl)-N-(N'-phenylacetylhydrazinocarbothioyl)acrylamide Chemical MeSH Browser

3-(3-methoxyphenyl)-N-(3,4,5-trimethoxyphenyl)acrylamide Chemical MeSH Browser

3-(4-fluoro-3-hydroxyphenyl)-N-naphthalen-1-yl-acrylamide Chemical MeSH Browser

3-(4-hydroxy-3-methoxyphenyl)-N-(2-(4-hydroxy-3-methoxyphenyl)ethyl)-2-propenamide Chemical MeSH Browser

3-(4-t-butylphenyl)-N-(2,3-dihydrobenzo(b)(1,4)dioxin-6-yl)acrylamide Chemical MeSH Browser

3-(5-benzo(1,3)dioxol-5-yl-1-methyl-1H-imidazol-2-yl)-2-nitroacrylamide Chemical MeSH Browser

3-(6-aminopyridin-3-yl)-N-methyl-N-((1-methyl-1H-indol-2-yl)methyl)acrylamide Chemical MeSH Browser

3-(thiophen-2-yl)-N-(2,2,2-trichloro-1-(3-(2-methoxyphenyl)thioureido)ethyl)acrylamide Chemical MeSH Browser

3-acrylamido-N-(4-((4-(4-(4-fluorophenyl)-1-methyl-2-(methylthio)-1H-imidazol-5-yl)pyridin-2-yl)amino)phenyl)benzamide Chemical MeSH Browser

3-furan-2-yl-N-p-tolylacrylamide Chemical MeSH Browser

3-hydroxy-2-methylpropionamide Chemical MeSH Browser

3-thiomorpholinopropylacrylamide Chemical MeSH Browser

4,5-dibromo-3-(2-(N-phenylcarbamoyl)vinyl)pyrrole-2-carboxylic acid Chemical MeSH Browser

4-((N-(2-(dimethylamino)ethyl)acrylamido)methyl)-N-(4-methyl-3-((4-(pyridin-3-yl)pyrimidin-2-yl)amino)phenyl)benzamide Chemical MeSH Browser

4-acrylamidofluorescein Chemical MeSH Browser

4-acryloylmorpholine Chemical MeSH Browser

4-methacylamide benzophenone Chemical MeSH Browser

6-methacrylamidohexanoic acid Chemical MeSH Browser

ACA 22 gel Chemical MeSH Browser

ACT-451840 Chemical MeSH Browser

AL 3264 Chemical MeSH Browser

ASP9853 Chemical MeSH Browser

AST 1306 Chemical MeSH Browser

BLU9931 Chemical MeSH Browser

C-150 curcumin Chemical MeSH Browser

E-N-(2-acetyl-phenyl)-3-phenyl-acrylamide Chemical MeSH Browser

EGFR-050 Chemical MeSH Browser

GR 46611 Chemical MeSH Browser

Geliperm Chemical MeSH Browser

HMR 1279 Chemical MeSH Browser

HPMA coploymer-doxorubicin-galactosamine Chemical MeSH Browser

HPMA copolymer-PTX-FK-ALN conjugate Chemical MeSH Browser

HPMA copolymer-platinate Chemical MeSH Browser

I(HSF)115 compound Chemical MeSH Browser

IS 001 Chemical MeSH Browser

Immobiline Chemical MeSH Browser

KPT-276 Chemical MeSH Browser

KPT-9274 Chemical MeSH Browser

L-826266 Chemical MeSH Browser

LQM330 Chemical MeSH Browser

LQM336 Chemical MeSH Browser

ML264 compound Chemical MeSH Browser

N,N'-(1,2-dihydroxyethylene)bisacrylamide Chemical MeSH Browser

N,N'-methylenebisacrylamide Chemical MeSH Browser

N,N-cystaminebis(acrylamide) Chemical MeSH Browser

N,N-dimethylacrylamide Chemical MeSH Browser

N,N-dimethylaminopropylacrylamide Chemical MeSH Browser

N-((2-(3,4-dimethoxybenzylidene)hydrazinyl)(imino)methyl)-3-(4-methoxyphenyl)acrylamide Chemical MeSH Browser

N-((2-(4-amino-6-(3-chloro-4-(pyridin-2-ylmethoxy)phenylamino)pyrimidin-5-yl)oxazol-4-yl)methyl)acrylamide Chemical MeSH Browser

N-((2-diethylamino)ethyl)acrylamide Chemical MeSH Browser

N-((3,4)-1-((2)-2-(4-bromophenyl)-2-hydroxyethyl)-3-methyl-piperidin-4-yl)-N-phenylacrylamide Chemical MeSH Browser

N-((4-(4,5-dihydro-1H-imidazol-2-yl)phenyl)methyl)-2-(2-(((4-methoxy-2,6-dimethylphenyl) sulfonyl)methylamino)ethoxy)-N-methylacetamide, fumarate Chemical MeSH Browser

N-((8-methoxy-2-oxo-2H-benzo(g)chromen-4-yl)methyl)-N-methylacrylamide Chemical MeSH Browser

N-(-4-(N-(biphenyl-2-ylmethyl)-N-2-methylpropylamino)- 1-(2-(2,4-difluorobenzoyl)benzoyl)pyrrolidin- 2-yl)methyl-3-(4-(2,4-dioxothiazolidin-5-ylidenemethyl) phenyl)acrylamide Chemical MeSH Browser

N-(1,1-dimethyl-3-oxobutyl)acrylamide Chemical MeSH Browser

N-(1-(3,5-difluoro-4-methanesulfonylaminophenyl)ethyl)-3-(2-propyl-6-trifluoromethylpyridine-3-yl)acrylamide Chemical MeSH Browser

N-(1-(3-morpholin-4-ylphenyl)ethyl)-3-phenylacrylamide Chemical MeSH Browser

N-(1-(4-cyclopropylmethyl-3,4-dihydro-2H-benzo(1,4)oxazin-6-yl)ethyl)-3-(2-fluorophenyl)acrylamide Chemical MeSH Browser

N-(1-Acetyl-2,3-dihydro-1H-indol-6-yl)-3-(3-cyano-phenyl)-N-(1-(2-cyclopentyl-ethyl)-piperidin-4yl)acrylamide Chemical MeSH Browser

N-(11-acrylamidoundecanoyl)valine Chemical MeSH Browser

N-(2-(2-(2-tert-butoxycarbonylaminooxyacetylamino-ethoxy)ethoxy)ethyl)-2-methacrylamide Chemical MeSH Browser

N-(2-(3,4-dimethoxyphenyl)-2-oxoethyl)-N-methyl-3-(3-pyridyl)-2-propenamide Chemical MeSH Browser

N-(2-(3-acrylamidophenylamino)pyrimidin-5-yl)-2-methyl-5-(3-(trifluoromethyl)benzamido)benzamide Chemical MeSH Browser

N-(2-(4-hydroxyphenyl)ethyl)-2-(2,5-dimethoxyphenyl)-3-(3-methoxy-4-hydroxyphenyl)acrylamide Chemical MeSH Browser

N-(2-aminoethyl)acrylamide Chemical MeSH Browser

N-(2-carbamoyethyl)valine Chemical MeSH Browser

N-(2-hydroxypropyl)methacrylamide Chemical MeSH Browser

N-(2-hydroxypropyl)methacrylamide co-polymer-doxorubicin conjugate Chemical MeSH Browser

N-(2-methylfuro(2,3-d)pyrimidin-4-yl)acrylamide Chemical MeSH Browser

N-(3(dimethylamino)propyl)methacrylamide copolymer Chemical MeSH Browser

N-(3,4-dimethoxyphenethyl)-N-methyl-3-(3-pyridyl)-2-propenamide Chemical MeSH Browser

N-(3-(dimethylamino)propyl)methacrylamide Chemical MeSH Browser

N-(3-benzoyl-4-((4-methylphenyl)acetylamino)phenyl)-3-(5-(4-nitrophenyl)-2-furyl)acrylic acid smide Chemical MeSH Browser

N-(4-((4,5-dichloro-2-fluorophenyl)amino)quinazolin-6-yl)acrylamide Chemical MeSH Browser

N-(4-((5-((2,6-difluoro-3,5-dimethoxybenzyl)oxy)pyrimidin-2-yl)amino)tetrahydrofuran-3-yl)acrylamide Chemical MeSH Browser

N-(4-(1,5-diphenyl-4,5-dihydro-1H-pyrazol-3-yl)phenyl)acrylamide Chemical MeSH Browser

N-(4-(1-benzoylpiperidin-4-yl)butyl)-3-(pyridin-3-yl)acrylamide Chemical MeSH Browser

N-(4-(3-bromophenylamino)-7-(3-(4-morpholinyl)propoxy)-6-quinazolinyl)-2-propenamide Chemical MeSH Browser

N-(4-(3-chloro-4-fluorophenylamino)quinazolin-6-yl)acrylamide Chemical MeSH Browser

N-(4-(N-(3-methoxypyrazin-2-yl)sulfamoyl)phenyl)-3-(5-nitrothiophene-2-yl)acrylamide Chemical MeSH Browser

N-(4-anilinoquinazolin-6-yl)acrylamide Chemical MeSH Browser

N-(4-bromophenyl)-3-(3-(4-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)acrylamide Chemical MeSH Browser

N-(4-hydroxy-3,5-dimethoxyphenethyl)-3-(4-hydroxy-3-methoxyphenyl)acrylamide Chemical MeSH Browser

N-(5-benzylthiazol-2-yl)-3-(furan-2-yl)acrylamide Chemical MeSH Browser

N-(6-methylamino-3-nitrophenyl)-3-(3-indolyl)acrylamide Chemical MeSH Browser

N-(7-hydroxy-5,6,7,8-tetrahydronaphthalen-1-yl)-3-(2-(piperidin-1-yl)-6-(trifluoromethyl)pyridin-3-yl)acrylamide Chemical MeSH Browser

N-2-hydroxypropyl-beta-(4,5-dibromo-2-furyl)acrylamide Chemical MeSH Browser

N-acetylpalytoxin Chemical MeSH Browser

N-acryloylaminoethoxyethanol Chemical MeSH Browser

N-hydroxy-3-(4-(((2-(2-(1-hydroxy-1-methylethyl)-1H-indol-3-yl)ethyl)isopropylamino)methyl)phenyl)acrylamide Chemical MeSH Browser

N-hydroxy-3-(4-((2-(2-methylpyrazolo(1,5-a)pyridin-3-yl)ethylamino)methyl)phenyl)acrylamide Chemical MeSH Browser

N-isopropylacrylamide Chemical MeSH Browser

N-isopropylacrylamide-acrylic acid copolymer Chemical MeSH Browser

N-isopropylacrylamide-co-acrylamidophenylboronic acid Chemical MeSH Browser

N-methyl-N-(2-methyl-1H-indol-3ylmethyl)-3-(7-oxo-5,6,7,8-tetrahydro-1,8-naphthyridin-3-yl)acrylamide Chemical MeSH Browser

N-methylacrylamide Chemical MeSH Browser

N-methylolacrylamide Chemical MeSH Browser

N-methylolmethacrylamide Chemical MeSH Browser

N-phenylacrylamide Chemical MeSH Browser

N-phenylethylenediamine methacrylamide Chemical MeSH Browser

NED-180 Chemical MeSH Browser

NIPAAm-co-BMA-co-AA Chemical MeSH Browser

NIPAM-ODA copolymer Chemical MeSH Browser

PEG-b-PNIPAM Chemical MeSH Browser

PLS-123 Chemical MeSH Browser

POHABA Chemical MeSH Browser

Pip-MBA-MMA Chemical MeSH Browser

Polgel Chemical MeSH Browser

RAP polymer Chemical MeSH Browser

RGFP966 Chemical MeSH Browser

SKLB-03220 Chemical MeSH Browser

TX1-85-1 Chemical MeSH Browser

WP-1034 Chemical MeSH Browser

WZ4002 Chemical MeSH Browser

Y-632 compound Chemical MeSH Browser

abivertinib Chemical MeSH Browser

alpha,omega-di-(4-cyanophenyl-4'-(6-hexyloxy)-azobenzene)-poly-(N-isopropylacrylamide) Chemical MeSH Browser

alpha-trifluoromethyl acrylamide Chemical MeSH Browser

aminoaryl polyacrylamide-nylon Chemical MeSH Browser

aminopropyltrimethoxysilane-methylenebisacrylamide Chemical MeSH Browser

aumolertinib Chemical MeSH Browser

biotinylated sulfo-Lewis A derivatized polyacrylamide Chemical MeSH Browser

botryllamide F Chemical MeSH Browser

botryllamide G Chemical MeSH Browser

concentramide Chemical MeSH Browser

entadamide A Chemical MeSH Browser

entadamide A-beta-D-glucopyranosyl-(1-3)-beta-D-glucopyranoside Chemical MeSH Browser

ethyl 1-(4-(2,3,3-trichloroacrylamido)phenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate Chemical MeSH Browser

heclin Chemical MeSH Browser

hydroxyethylcelluose-graft-poly(N,N-dimethylacrylamide) Chemical MeSH Browser

lemairamin Chemical MeSH Browser

lymphostim Chemical MeSH Browser

methacrylamide Chemical MeSH Browser

methoxy-poly(ethylene glycol)-b-poly(N-2-hydroxypropyl methacrylamide-co-histidine)cholesterol Chemical MeSH Browser

methoxy-poly(ethylene glycol)-block-poly(N-isopropylacrylamide) Chemical MeSH Browser

methyl (E)-(3-(3,4-dihydroxyphenyl)acryloyl)tryptophanate Chemical MeSH Browser

methylgerambullone Chemical MeSH Browser

osimertinib Chemical MeSH Browser

palytoxin Chemical MeSH Browser

poly (acrylamide-(2-methyl acryloxyethyl) dimethyl buthylammonium bromide) Chemical MeSH Browser

poly (methyl methacrylate-co-diacetone acrylamide) Chemical MeSH Browser

poly (trans-1,2-cyclohexanediyl-bis acrylamide) Chemical MeSH Browser

poly N-(4-bromophenyl)-2-methacrylamide-co-2-acrylamido-2-methyl-1-propanesulfonic acid-co-divinylbenzene Chemical MeSH Browser

poly(1-(beta-acrylamidoethyl)-3-hydroxy-2-methyl-4(1H)-pyridinone-N,N-dimethylacrylamide) Chemical MeSH Browser

poly(1-methacryloylamido-2-hydroxypropane-co-20-O-(methacryloylglycyl-6-aminohexanoylglycyl)) Chemical MeSH Browser

poly(2-hydroxyethylmethacrylate-co-N,N-dimethylacrylamide) Chemical MeSH Browser

poly(4-vinylbenzylinositol polyphosphate-co-N,N-dimethylacrylamide) Chemical MeSH Browser

poly(AzoAA-r-DMA) Chemical MeSH Browser

poly(D,L-lactide)-g-poly(N-isopropyl acrylamide-co-methacrylic acid) Chemical MeSH Browser

poly(IPAAm-co-CIPAAm) Chemical MeSH Browser

poly(N,N-cystaminebis(acrylamide(2)-4-(aminomethyl)piperidine)-polyethylene glycol Chemical MeSH Browser

poly(N,N-diethylacrylamide) Chemical MeSH Browser

poly(N,N-diethylacrylamide-co-2-hydroxyethyl methacrylate) Chemical MeSH Browser

poly(N,N-dimethylacrylamide) Chemical MeSH Browser

poly(N,N-dimethylacrylamide-co-N,N-diethylacrylamide) Chemical MeSH Browser

poly(N-(2-hydroxypropyl) methacrylamide lactate) Chemical MeSH Browser

poly(N-(2-hydroxypropyl)methacrylamide-co-N-(N',N'-dicarboxymethylaminopropyl)methacrylamide) Chemical MeSH Browser

poly(N-(3-methyl-1H-indol-1-yl)-2-methacrylamide-co-2-acrylamido-2-methyl-1-propane sulfonic acid-co-divinylbenzene) Chemical MeSH Browser

poly(N-6-aminohexylacrylamide) Chemical MeSH Browser

poly(N-isopropylacrylamide)-b-poly(6-(4-(4-methylphenyl-azo) phenoxy) hexylacrylate) Chemical MeSH Browser

poly(N-isopropylacrylamide)-block-poly(sulfobetaine methacrylate) Chemical MeSH Browser

poly(N-isopropylacrylamide)-graft-polypropylene Chemical MeSH Browser

poly(N-isopropylacrylamide-N-n-butylacrylamide-N-acryloxysuccinimide) Chemical MeSH Browser

poly(N-isopropylacrylamide-N-n-propylacrylamide) Chemical MeSH Browser

poly(N-isopropylacrylamide-N-tert-butylacrylamide)copolymer Chemical MeSH Browser

poly(N-isopropylacrylamide-b-lactide) Chemical MeSH Browser

poly(N-isopropylacrylamide-b-methyl methacrylate) Chemical MeSH Browser

poly(N-isopropylacrylamide-co-1-(N,N-bis-carboxymethyl)amino-3-allylglycerol) Chemical MeSH Browser

poly(N-isopropylacrylamide-co-2-hydroxyisopropylacrylamide) Chemical MeSH Browser

poly(N-isopropylacrylamide-co-2-methacryloylamidohistidine) Chemical MeSH Browser

poly(N-isopropylacrylamide-co-N-(3-(dimethylamino)propyl)methacrylamide)-b-polyethyleneimine Chemical MeSH Browser

poly(N-isopropylacrylamide-co-N-acryloxysuccinimide-co-2-hydroxyethyl methacrylate) Chemical MeSH Browser

poly(N-isopropylacrylamide-co-benzo-18-crown-6-acrylamide) Chemical MeSH Browser

poly(N-isopropylacrylamide-co-benzophenone) Chemical MeSH Browser

poly(N-isopropylacrylamide-co-butyl methacrylate-co-N,N-dimethylaminopropylacrylamide) Chemical MeSH Browser

poly(N-isopropylacrylamide-co-hydroxyethyl methacrylate-acrylate) Chemical MeSH Browser

poly(N-isopropylacrylamide-co-methacrylic acid) Chemical MeSH Browser

poly(N-isopropylacrylamide-co-propylacrylic acid) Chemical MeSH Browser

poly(N-isopropylacrylamide-co-sulfonylurea) Chemical MeSH Browser

poly(N-isopropylacrylamide-co-tris-nitrilotriacetic acid acrylamide) Chemical MeSH Browser

poly(N-isopropylacrylamide-sodium acrylate) Chemical MeSH Browser

poly(NIPAM-DMA) Chemical MeSH Browser

poly(acrylamide-co-2-((methacryloyloxy)ethyl)trimethylammonium chloride) Chemical MeSH Browser

poly(acrylamide-co-N,N-dimethylacrylamide) Chemical MeSH Browser

poly(acrylamide-co-acrylic acid) Chemical MeSH Browser

poly(acrylamide-co-allylamide of gluconic acid) Chemical MeSH Browser

poly(acrylamide-co-allylamide of lactobionic acid) Chemical MeSH Browser

poly(acrylamide-co-crotonic acid) Chemical MeSH Browser

poly(acrylamide-co-monoethyl itaconate) Chemical MeSH Browser

poly(acrylamide-co-monomethyl itaconate) Chemical MeSH Browser

poly(acrylamidomethylpropanesulfonate)sodium Chemical MeSH Browser

poly(acrylamidophenylboronicacid) Chemical MeSH Browser

poly(carboxybetaine acrylamide) Chemical MeSH Browser

poly(styrene-co-N-isopropylacrylamide) Chemical MeSH Browser

poly-N-((2,2-dimethyl-1,3-dioxolane)methyl)acrylamide Chemical MeSH Browser

poly-N-(1H-tetrazole-5-yl)-methacrylamide Chemical MeSH Browser

polyethyleneglycol-polyacrylamide copolymer Chemical MeSH Browser

polyquaternium-7 Chemical MeSH Browser

positive allosteric modulator PAM-2 Chemical MeSH Browser

pyrimorph Chemical MeSH Browser

pyrotinib Chemical MeSH Browser

rociletinib Chemical MeSH Browser

sodium N-(11-acrylamidoundecanoyl)-glycinate Chemical MeSH Browser

spebrutinib Chemical MeSH Browser

tert-butylacrylamide Chemical MeSH Browser

transtinib Chemical MeSH Browser

tris(hydroxymethyl)-acrylamidomethane Chemical MeSH Browser

verdinexor Chemical MeSH Browser

zwitterion carboxybetaine acrylamide Chemical MeSH Browser