Cas No|Cas Number|CAS Registry Number:113146-74-0 .Chemical Name|Molecular Name:Physalin L Formulanor:C28H32O10 Synonyms:1,17:2,6-Dimethano-8H-naphtho[1,2-f]furo[3,4-b:2,3-c']bisoxocin-4,8,11,19(1H,10H)-tetrone, 2,3,6,6a,8a,9,10a,10b,12,16,16a,17-dodecahydro-8a,16,17-trihydroxy-2,3,6a,10b-tetramethyl-, (1R,2S,3S,6R,6aS,8aS,10aS,10bR,16R,16aS,17R,18aR)-, (1S,2R,3R,5R,6S,7R,14R,15S,18S,21S,22R,25S)-5,7,18-Trihydroxy-1,14,21,25-tetramethyl-4,20,23-trioxaheptacyclo[20.3.1.1.0.0.0.0]heptacosa-8,10-diene-13,19,24,27-tetrone Molecular Weight:528.548
113146-74-0 Molecular Info »Cas Chemical NameCas No
Cas No|Cas Number|CAS Registry Number:123174-58-3 .Chemical Name|Molecular Name:Perylene Red Formulanor:C72H58N2O8 Synonyms:Isoquino[4',5',6':6,5,10]anthra[2,1,9-def]isoquinoline-1,3,8,10(2H,9H)-tetrone, 2,9-bis[2,6-bis(1-methylethyl)phenyl]-5,6,12,13-tetraphenoxy-, Anthra(2,1,9-def:6,5,10-d'E'f')diisoquinoline-1,3,8,10(2H,9H)-tetrone,2,9-bis(2,6-bis(1-methylethyl)phenyl)-5,6,12,13-tetraphenoxy, UNII-1283KGS16D, Basf ROT 300, N,N'-Bis(2,6-diisopropylphenyl)-1,6,7,12-tetraphenoxyperylene-3,4:9,10-tetracarboxdiimide, 2,9-Bis(2,6-diisopropylphenyl)-5,6,12,13-tetraphenoxyisoquinolino[4',5',6':6,5,10]anthra[2,1,9-def]isoquinoline-1,3,8,10(2H,9H)-tetrone, 1,6,7,12-Tetraphenoxy-N,N'-bis(2,6-diisopropylphenyl)-3,4,9,10-penylenedicaroximide, KF-856, Lumogen Red 300, ROT-300 Molecular Weight:1079.24
123174-58-3 Molecular Info »Cas No|Cas Number|CAS Registry Number:1766-41-2 .Chemical Name|Molecular Name:perfluorotetracosane Formulanor:C24F50 Synonyms:Tetracosane,1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,24-pentacontafluoro, MFCD00009915, perfluoro-n-tetracosane, perfluorotetracosane Molecular Weight:1238.18
1766-41-2 Molecular Info »Cas No|Cas Number|CAS Registry Number:307-60-8 .Chemical Name|Molecular Name:Perfluorododecyl iodide Formulanor:C12F25I Synonyms:1,1,2,2-Tetrahydroperfluorododecyl iodide, EINECS 206-205-3, Dodecane,1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12-pentacosafluoro-12-iodo, Pentacosafluoro-1-iodododecane, 1-Iodoperfluorododecane, Perfluorododecyl iodide, MFCD00001066, Pentacosafluor-1-jod-dodecan, perfluorododec-1-yl iodide Molecular Weight:745.993
307-60-8 Molecular Info »Cas No|Cas Number|CAS Registry Number:84896-72-0 .Chemical Name|Molecular Name:Perchlorate ionophore I Formulanor:C44H28Cl3N4P Synonyms:(1Z,6Z,12Z,17Z)-22,22-Dichloro-2,7,12,17-tetraphenyl-21,23,24,25-tetraaza-22-phosphoniahexacyclo[9.9.3.1.1.0.0]pentacosa-1,3(25),4,6,8,10,12,14,16(24),17,19-undecaene chloride Molecular Weight:750.053
84896-72-0 Molecular Info »Cas No|Cas Number|CAS Registry Number:39756-30-4 .Chemical Name|Molecular Name:Palmitic acid Formulanor:C16HD31O2 Synonyms:perdeuteropalmitic acid, Palmitic-d31 acid, hexdecanoic acid, Hexadecanoic acid, chain perdeuteraded palmitic acid, d31-palmitic acid, Palmitic acid, MFCD00053335, palmitic acid-2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,16-d31, n-hexadecanoic acid, hexadecanoic acid-d31, 1-hexadecanoic acid, Hexadecanoic-d31 acid, Neo-Fat 16 Molecular Weight:287.62
39756-30-4 Molecular Info »Cas No|Cas Number|CAS Registry Number:50-56-6 .Chemical Name|Molecular Name:Oxytocin acetate salt Formulanor:C43H66N12O12S2 Synonyms:Pitocin, Synpitan, α-Hypophamine Oxytocic hormone, Oxystin, L-Cysteinyl-L-tyrosyl-L-isoleucyl-L-glutaminyl-L-asparaginyl-L-cysteinyl-L-prolyl-L-leucylglycinamide cyclic (1®6)-disulfide, Uteracon, Syntocinone, MFCD00076731, EINECS 200-048-4, (2S)-1-({(4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-16-(4-hydroxybenzyl)-13-[(1S)-1-methylpropyl]-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosan-4-yl}carbonyl)-N-{(1S)-1-[(2-amino-2-oxoethyl)carbamoyl]-3-methylbutyl}pyrrolidine-2-carboxamide, 1-{[(4R,7S,10S,13S,16S,19R)-19-Amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-13-[(2S)-2-butanyl]-16-(4-hydroxybenzyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosan-4-yl]carbonyl}-L-prolyl-L-leucylglycinamide, α-Hypophamine, Oxtocin, Nobitocin S, 1-{[(4R,7S,10S,13S,16S,19R)-19-Amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-13-[(2S)-butan-2-yl]-16-(4-hydroxybenzyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosan-4-yl]carbonyl}-L-prolyl-L-leucylglycinamide, Atonin O, Syntocinon, Di-sipidin, Glycinamide, 1-[[(4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-16-[(4-hydroxyphenyl)methyl]-13-[(1S)-1-methylpropyl]-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloeicos-4-yl]carbonyl]-L-prolyl-L-leucyl-, Presoxin, Syntocin, Utedrin, Partocon, Oxytocin Acetate Molecular Weight:1007.187
50-56-6 Molecular Info »Cas No|Cas Number|CAS Registry Number:186348-23-2 .Chemical Name|Molecular Name:Ortataxel Formulanor:C44H57NO17 Synonyms:Bay-59-8862, Hexanoic acid, 3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-hydroxy-5-methyl-, (3aS,4R,7R,8aS,9S,10aR,12aS,12bR,13S,13aS)-7,12a-bis(acetyloxy)-13-(benzoyloxy)-3a,4,7,8,8a,9,10,10a,12,12a,12b,13-dodecahydro-9-hydroxy-5,8a,14,14-tetramethyl-2,8-dioxo-6,13a-methano-13aH-1,3-dioxolo[8,9]cyclodeca[1,2-d][1]benzoxet-4-yl ester, (2R,3S)-, .13-(N-Boc-, (1S,2S,3R,4S,7R,9S,10S,12R,15R,16S)-4,12-Diacetoxy-9-hydroxy-15-{[(2R,3S)-2-hydroxy-5-methyl-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)hexanoyl]oxy}-10,14,20,20-tetramethyl-11,18-dioxo-6,17,19-trio ;xapentacyclo[11.6.1.0.0.0]icos-13-en-2-yl benzoate, Ortataxel Molecular Weight:871.92
186348-23-2 Molecular Info »Cas No|Cas Number|CAS Registry Number:3397-23-7 .Chemical Name|Molecular Name:Ornipressin Formulanor:C45H63N13O12S2 Synonyms:Glycinamide, 1-[[(4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-16-[(4-hydroxyphenyl)methyl]-6,9,12,15,18-pentaoxo-13-(phenylmethyl)-1,2-dithia-5,8,11,14,17-pentaazacycloeicos-4-yl]carbonyl]-L-prolyl-L-ornithyl-, POR-8, 8-Ornithinevasopressin, 8-L-Ornithinevasopressin, 8-L-Ornithine-vasopressin, EINECS 222-253-8, 8-ornipressin vasopressin, Ornithine-vasopressin, vasopressin 8-ornithine, POR-8 Sandoz, Orn8-vasopressin, 1-{[(4R,7S,10S,13S,16S,19R)-19-Amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-13-benzyl-16-(4-hydroxybenzyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosan-4-yl]carbonyl}-L-prolyl-L-ornithylglycinamide, Ornipressin Acetate Molecular Weight:1042.192
3397-23-7 Molecular Info »Cas No|Cas Number|CAS Registry Number:5349-52-0 .Chemical Name|Molecular Name:Octadecanoic acid,26-hydroxy-3,6,9,12,15,18,21,24-octaoxahexacos-1-yl ester Formulanor:C36H72O11 Synonyms:26-Hydroxy-3,6,9,12,15,18,21,24-octaoxahexacos-1-yl stearate, Stearic acid,monoester with nonaethylene glycol, UNII-WZU67V0H4I, Nonaethylene glycol monostearate, Lipal 4 SE Molecular Weight:680.95
5349-52-0 Molecular Info »Cas No|Cas Number|CAS Registry Number:20290-75-9 .Chemical Name|Molecular Name:Moroctic acid Formulanor:C18H28O2 Synonyms:(4Z,8Z,12Z,15Z)-4,8,12,15-Octadecatetraenoic acid, Stearidonic Acid, 4,8,12,15-Octadecatetraenoic acid, (4Z,8Z,12Z,15Z)-, (4Z,8Z,12Z,15Z)-Octadeca-4,8,12,15-tetraenoic acid, (all-Z)-4,8,12,15-Octadecatetraenoic Acid, Moroctic acid Molecular Weight:276.414
20290-75-9 Molecular Info »Cas No|Cas Number|CAS Registry Number:10118-90-8 .Chemical Name|Molecular Name:Minocycline Formulanor:C23H27N3O7 Synonyms:(4S,4aS,5aR,12aS)-4,7-Bis(dimethylamino)-3,10,12,12a-tetrahydroxy-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydro-2-tetracenecarboximidic acid, Minocyclin, Minocin, 7-dimethylamino-6-demethyl-6-deoxytetracycline, (4S,4aS,5aR,12aS)-4,7-Bis(dimethylamino)-3,10,12,12a-tetrahydroxy-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydro-2-tetracenecarboxamide, 4S-(4a,4aa,5aa,12aa)-4,7-bis(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,10,12,12a-tetrahydroxy-1,11-dioxo-2-naphthacene carboxamide, Minocyclinum, [4S-(4a,4aa,5aa,12aa)]-4,7-Bis(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,10,12,12a-tetrahydroxy-1,11-dioxo-2-naphthacenecarboxamide, 2-Naphthacenecarboximidic acid, 4,7-bis(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,10,12,12a-tetrahydroxy-1,11-dioxo-, (4S,4aS,5aR,12aS)-, Apo-Minocycline, (4S,4aS,5aR,12aR)-4,7-bis(dimethylamino)-1,10,11,12a-tetrahydroxy-3,12-dioxo-4a,5,5a,6-tetrahydro-4H-tetracene-2-carboxamide, (4S,4aS,5aR,12aS)-4,7-bis(dimethylamino)-3,10,12,12a-tetrahydroxy-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide, 2-Naphthacenecarboxamide, 4,7-bis(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,10,12,12a-tetrahydroxy-1,11-dioxo-, (4S,4aS,5aR,12aS)-, Minocycline, Arestin, 7-(N,N-dimethylamino)sancycline, Aknemin, Minocyclinum [INN-Latin], EINECS 237-099-7, Dynacin, Minociclina, MFCD00083669 Molecular Weight:457.476
10118-90-8 Molecular Info »Cas No|Cas Number|CAS Registry Number:218600-50-1 .Chemical Name|Molecular Name:METHYL 3,12-DIOXOOLEAN-9(11)-EN-28-OATE Formulanor:C31H46O4 Synonyms:Methyl 3,12-dioxoolean-9(11)-en-28-oate, Olean-9(11)-en-28-oic acid, 3,12-dioxo-, methyl ester, (4aS,6aR,6bS,12aS,14aR,14bR)-methyl-2,2,6a,6b,9,9,12a-heptamethyl-10,14-dioxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,14,14a,14b-icosahydropicene-4a-carboxylate, Olean-9(11)-en-28-oic acid, 3,12-dioxo-, methyl ester, (5ξ,18α)-, Olean-9(11)-en-28-oic acid,3,12-dioxo-,methyl ester, 2,2,6a,6b,9,9,12a-Heptamethyl-10,14-dioxo-1,3,4,5,6,6a,6b,7,8,8a,9,10,11,12,12a,14,14a,14b-octadecahydro-2H-picene-4a-carboxylic acid methyl ester, Methyl (5ξ,18α)-3,12-dioxoolean-9(11)-en-28-oate Molecular Weight:482.694
218600-50-1 Molecular Info »Cas No|Cas Number|CAS Registry Number:57103-68-1 .Chemical Name|Molecular Name:Maytansinol Formulanor:C28H37ClN2O8 Synonyms:4,24-Dioxa-9,22-diazatetracyclo[19.3.1.1.0]hexacosa-10,12,14(26),16,18-pentaene-8,23-dione, 11-chloro-6,21-dihydroxy-12,20-dimethoxy-2,5,9,16-tetramethyl-, (1S,2R,3S,5S,6S,16E,18E,20R,21S) 
-, Ansamitocin P0, O3-de-(N-acetyl-N-methyl-L-alanyl)-maytansine, (3E,5E,7R,84S)-14-chloro-10t,11c-epoxy-84,12c-dihydroxy-15,7r-dimethoxy-3,9c,11t,15-tetramethyl-(84r'H,86c'H)-15-aza-1(1,3)-benzena-8(4,6)-[1,3]oxazinana-cyclopentadecaphane-3,5-diene-82,14-dione, (1S,2R,3S,5S,6S,16E,18E,20R,21S)-11-Chloro-6,21-dihydroxy-12,20-dimethoxy-2,5,9,16-tetramethyl-4,24-dioxa-9,22-diazatetracyclo[19.3.1.1.0]hexacosa-10(26),11,13,16,18-pentaene-8,23-dione, Maytansinol (7) Molecular Weight:565.055
57103-68-1 Molecular Info »Cas No|Cas Number|CAS Registry Number:58356-65-3 .Chemical Name|Molecular Name:manganese(iii) acetate meso-tetraphenylporphine Formulanor:C46H32MnN4O2 Synonyms:2,7,12,17-tetraphenyl-21,23,24,25-tetraaza-22-manganahexacyclo[9.9.3.1^{3,6}.1^{13,16}.0^{8,23}.0^{18,21}]pentacosa-1,3(25),4,6,8,10,12,14,16(24),17,19-undecaene, MFCD00216548, Mn(TPP)(OAc), Mn(meso-tetraphenylporphyrin)OAc, manganese(III)(meso-tetraphenylporphyrin)OAc, MANGANESE meso-TETRAPHENYLPORPHINE ACETATE, acetato[5,10,15,20-tetra(phenyl)porphyrinato]manganese(III) Molecular Weight:727.71
58356-65-3 Molecular Info »Cas No|Cas Number|CAS Registry Number:79-63-0 .Chemical Name|Molecular Name:Lanosterin Formulanor:C30H50O Synonyms:Lanosterol, Lanster, MFCD00021108, Lanosta-8,24-dien-3-β-ol, Lanosterin, Kriptosterol, DUSOGEL, botalanbase, (3β)-Lanosta-8,24-dien-3-ol, Criptosterol, Lanosta-8,24-dien-3-ol, (3β)-, CRYPTOSTEROL, Kryptosterol, EINECS 201-214-9, (3β,5α)-4,4,14-trimethyl-Cholesta-8,24-dien-3-ol, Lanosta-8,24-dien-3β-ol (8CI), Cholesta-8,24-dien-3-ol, 4,4,14-trimethyl-, (3β,5α)-, Lanosta-8,24-dien-3β-ol, (3β,20R)-Lanosta-8,24-dien-3-ol, (3S,5R,10S,13R,14R,17R)-4,4,10,13,14-Pentamethyl-17-[(2R)-6-methyl-5-hepten-2-yl]-2,3,4,5,6,7,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol, lanosta-8,24-dien-3-ol, (3β,20R)-, Kryp-tosterol, (3b)-Lanosta-8,24-dien-3-ol, ISOCHOLESTEROL Molecular Weight:426.717
79-63-0 Molecular Info »Cas No|Cas Number|CAS Registry Number:136572-09-3 .Chemical Name|Molecular Name:Irinotecan Hydrochloride Trihydrate Formulanor:C33H45ClN4O9 Synonyms:(+)-(4S)-4,11-Diethyl-4-hydroxy-9-<(piperidinopiperidino)-carbonyloxy>-1H-pyrano<3',4':6,7>indolizino<1,2-b>quinoline-3,14-(4H,12H)-dione hydrochloride trihydrate, [1,4'-Bipiperidine]-1'-carboxylic acid, (4S)-4,11-diethyl-3,4,12,14-tetrahydro-4-hydroxy-3,14-dioxo-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-9-yl ester, hydrochloride, hydrate (1:1:3), CPT-11 Trihydrate, Irinotecan hydrochloride trihydrate, MFCD01765731, Irinotecan HCl Trihydrate, (4S)-4,11-Diethyl-4-hydroxy-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-9-yl 1,4'-bipiperidine-1'-carboxylate hydrochloride trihydrate, Irinotecan (hydrochloride trihydrate) Molecular Weight:677.185
136572-09-3 Molecular Info »Cas No|Cas Number|CAS Registry Number:100286-90-6 .Chemical Name|Molecular Name:Irinotecan hydrochloride Formulanor:C33H39ClN4O6 Synonyms:Campto hydrochloride, Campto, [1,4'-Bipiperidine]-1'-carboxylic acid, (4S)-4,11-diethyl-3,4,12,14-tetrahydro-4-hydroxy-3,14-dioxo-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-9-yl ester, hydrochloride (1:1), [1,4'-bipiperidine]-1'-carboxylic acid, (4S)-4,11-diethyl-3,4,12,14-tetrahydro-4-hydroxy-3,14-dioxo-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-9-yl ester, monohydrochloride, 1,4'-bipipéridine-1'-carboxylate de (4S)-4,11-diéthyl-4-hydroxy-3,14-dioxo-3,4,12,14-tétrahydro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoléin-9-yle chlorhydrate, Camptothecin 11 hydrochloride, Irinotecan hydrochloride, CPT-11 hydrochloride, Topotecin, (4S)-4,11-Diethyl-4-hydroxy-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-9-yl 1,4'-bipiperidine-1'-carboxylate hydrochloride, irinotecan hydrochloride (anhydrous), Irinotecan Hcl, CPT 11, (4s)-4,11-diethyl-4-hydroxy-3,14-dioxo-3,4,12,14-tetrahydro-1h-pyrano[3',4':6,7]indolizino[1,2-b]chinolin-9-yl-1,4'-bipiperidin-1'-carboxylathydrochlorid, (4S)-4,11-Diethyl-4-hydroxy-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-9-yl 1,4'-bipiperidine-1'-carboxylate hydrochloride (1:1), Camptothecin analog, MFCD01862255, Irinotecan […]
100286-90-6 Molecular Info »Cas No|Cas Number|CAS Registry Number:16469-74-2 .Chemical Name|Molecular Name:Hydromadinone Formulanor:C21H29ClO3 Synonyms:(6S,8R,9S,10R,13S,14S,17R)-6-chloro-17-ethanoyl-17-hydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-one, (6S,8R,9S,10R,13S,14S,17R)-17-acetyl-6-chloro-17-hydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-one, 6alpha-Chloro-17-hydroxyprogesterone Molecular Weight:364.906
16469-74-2 Molecular Info »Cas No|Cas Number|CAS Registry Number:35467-43-7 .Chemical Name|Molecular Name:Hirsuteine Formulanor:C22H26N2O3 Synonyms:Indolo[2,3-a]quinolizine-2-acetic acid, 3-ethenyl-1,2,3,4,6,7,12,12b-octahydro-α-(methoxymethylene)-, methyl ester, (αZ,2S,3R,12bS)-, delta18-Hirsutine, (E)-16,17,18,19-Tetradehydro-17-methoxy-17,18-secoyohimban-16-carboxylic AcidMethyl Ester, methyl (3beta,16E)-16-(methoxymethylidene)coryn-18-en-17-oate, Methyl (16Z)-16-(methoxymethylene)coryn-18-en-17-oate, methyl (E)-2-[(2S,3R,12bR)-3-ethenyl-1,2,3,4,6,7,12,12b-octahydroindolo[2,3-a]quinolizin-2-yl]-3-methoxyprop-2-enoate Molecular Weight:366.453
35467-43-7 Molecular Info »Chemical products are described in many different ways including chemical structures, generic, molecular formulas, systematic, common, and trade names. The CAS (Chemical Abstracts Service) Registry Number (Cas No or Cas Number) is a unique identifier which is a unique and unambiguous identifier for a specific substance that allows clear communication and, with the help of CAS scientists, links together all available data and research about that substance. Governmental agencies rely on CAS Registry Numbers for substance identification in regulatory applications because they are unique, easy validated, and internationally recognized.You can search the Chemical compounds's molecular information with the Cas Registry Number.You can also Search Cas Number with Chemical Name or formulas.The most complete and comprehensive Cas number lookup on Molecularinfo.com.