CAS Number Index

A CAS Registry Number,also referred to as CASRN or CAS Number, is a unique numerical identifier assigned by the Chemical Abstracts Service (CAS) to every chemical substance described in the open scientific literature (currently including all substances described from 1957 through the present, plus some substances from the early or mid 1900s), including organic and inorganiccompounds, minerals, isotopes, alloys and nonstructurable materials (UVCBs, of unknown, variable composition, or biological origin).The registry maintained by CAS is an authoritative collection of disclosed chemical substance information. It currently identifies more than 144 million unique organic and inorganic substances and 67 million protein and DNA sequences,plus additional information about each substance. It is updated with around 15,000 additional new substances daily.（information coming from wikipedia.org)

Name CAS Number
1H-Imidazole-4-carboxaldehyde,2-(3-pyridinyl)- (9CI) 279251-09-1
1H-Imidazole-4-carboxaldehyde,2-(4-pyridinyl)- (9CI) 279251-10-4
Pyrrolo[1,2:2,3]isothiazolo[4,5-c]isoxazole (9CI) 279258-05-8
1-Bromo-4-(2-chloroethoxy)benzene 279261-80-2
4-(4-bromo-3-fluorophenyl)morpholine 279261-83-5
ChroMan-6-ylboronic acid 279261-84-6
4-(3-Methoxypropoxy)phenylboronic acid 279262-35-0
buta-1,3-diene,ethyl prop-2-enoate,methyl 2-methylprop-2-enoate,styrene 27965-85-1
Ammonia, urea, formaldehyde polymer 27967-29-9
4,6-Pyrimidinediamine,hydrochloride (1:1) 5468-67-7
4,5,6,7-tetrahydro-1H-indene 24279-06-9
4-Amino-2,5,6-trichloropyrimidine 28969-60-0
2,6-diamino-4-(3-nitrophenyl)-4H-thiopyran-3,5-dicarbonitrile 294873-16-8
2-Benzofurancarboxamide, 3-amino-5-chloro- 294878-00-5
butyl 2-methylprop-2-enoate,butyl prop-2-enoate,styrene 29497-14-1
SODIUM (CARBOMETHOXY)METHANE SULFONATE 29508-16-5
diethyl(dimethyl)azanium,chloride 29508-45-0
1,5-dimethyl-3-[(2-methyl-1H-indol-3-yl)azo]-2-phenyl-1H-pyrazolium methyl sulphate 29508-48-3
Benzenamine,2-(1H-imidazol-2-yl)- 29528-25-4
3-[5-(3-nitrobenzoyl)-1,3-dioxoisoindol-2-yl]benzoic acid 295348-05-9
eupatolitin 29536-44-5
ciclonium bromide 29546-59-6
2-(ETHYLTHIO)PHENOL 29549-60-8
(E)-N-Caffeoylputrescine 29554-26-5
methyl 2-methylprop-2-enoate,oxiran-2-ylmethyl 2-methylprop-2-enoate,styrene 29564-58-7
2-tert-butyl-3,3-dimethylbutanoyl chloride 29571-65-1
2-methyl-6,7-dihydro-5H-1,3-benzoxazol-4-one 201024-63-7
1H-Indazole, 1-(2-chloro-1-oxopropyl)- (9CI) 201299-94-7
ethyl N-(4-formylphenyl)carbamate 20131-85-5
p-Acetoacetophenetidide, 2,2''-((2,2'-dichloro-4,4'-biphenylylene)bis(azo))bis- 20139-66-6
N,N-dimethyl-4-(4-oxocyclohexyl)benzamide 201412-89-7
2-bromo-1-thiazol-5-yl-ethanone 201470-17-9
Furo[2,3-b]pyridine-5-carboxaldehyde (9CI) 201470-89-5
4-thujanol 546-79-2
MELILOTOSIDE 618-67-7
Albasapogenin 639-14-5
3-Bromo-4-methoxy-5-nitropyridine 31872-76-1
2-Bromo-1,3-thiazol-4-amine hydrobromide (1:1) 41731-35-5
(D-Ala2)-Leu-Enkephalin amide 65189-64-2
3-(1H-IMIDAZOL-2-YL)-PHENYLAMINE 161887-05-4
1-(3-ethyl-2-methylimidazol-4-yl)ethanone 403793-00-0
2-(1-Methyl-1H-imidazol-4-yl)acetic acid 2625-49-2
4-(4-Bromophenyl)-1H-imidazole 13569-96-5
1-(2,3-DIHYDRO-1-BENZOFURAN-2-YL)METHANAMINEHYDROCHLORIDE 103747-88-2
2-(1H-imidazol-2-yl)-1,3-thiazole 438545-36-9
2-(2-furoyl)-4(5)-(2-furanyl)-1h-imidazole 91037-91-1
1H-Imidazole,2-(2-phenylethenyl)- 13682-34-3
2-CHLORO-6-(1H-IMIDAZOL-1-YL)BENZONITRILE 287176-53-8
5-fluoro-2-imidazol-1-ylaniline 251649-52-2
2-chloromethyl-1-methyl-1H-imidazole 19225-92-4

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