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
Benzamide,2-chloro-5-nitro- 16588-15-1
ETHYL 6-(TERT-BUTYL)-2-CHLORO-3-CYANOISONICOTINATE 175204-47-4
1-(Difluoromethoxy)-2-nitrobenzene 22225-77-0
6-BROMO-1-(CHLOROMETHYL)-2-METHOXYNAPHTHALENE 92643-16-8
Methyl 4-formyl-1-methyl-1H-pyrrole-2-carboxylate 67858-47-3
3-(1-Pyrrolidinyl)benzoic acid 72548-79-9
3-(1H-PYRAZOL-1-YLMETHYL)BENZOIC ACID 562803-68-3
4-(TRIFLUOROMETHYL)-3-PYRIDINECARBOTHIOAMIDE 158063-54-8
2,1,3-BENZOXADIAZOL-4-YLMETHANOL 175609-19-5
[3-(1H-1,2,4-TRIAZOL-1-YLMETHYL)PHENYL]METHANOL 871825-54-6
Pyrazine,2,3-dihydro-5,6-diphenyl- 1489-06-1
4-ISOCYANATO-5-METHYL-1-PHENYL-1H-PYRAZOLE 799283-97-9
2-Acetyl-3-amino-5-phenylthiophene 105707-24-2
2-(4-methoxyphenoxy)-3-nitropyridine 76893-48-6
1,2-dichloro-4-(2,2-diethoxyethoxy)benzene 98919-15-4
prenyl formate 68480-28-4
Ethyl 1-methylcyclopropanecarboxylate 71441-76-4
2-CHLORO-3,4-DIMETHOXYBENZOIC ACID 52009-53-7
4-methylsulfanyl-6-piperidin-1-yl-1,3,5-triazin-2-amine 101071-66-3
1-[2-(4-CHLOROPHENYL)-7-METHYLPYRAZOLO[1,5-A]PYRIMIDIN-6-YL]ETHAN-1-ONE 175201-63-5
4-AMINO-2-(4-METHYLPHENYL)-6-(METHYLTHIO)PYRIMIDINE-5-CARBONITRILE 287922-40-1
3-CHLORO-4-METHYL-2-THIOPHENECARBONYLCHLORIDE 690632-13-4
2-chloro-5-isocyanatopyridine 125117-96-6
4-(4-benzylpiperazino)-1h-indole dihydrochloride monohydrate 690632-86-1
5-(2-METHYL-1,3-THIAZOL-4-YL)-2-THIOPHENECARBONYL CHLORIDE 690631-93-7
5-(CHLOROMETHYL)-1-METHYL-3-PHENYL-1H-PYRAZOLE 869901-14-4
(2-Methyl-1,3-Thiazol-4-Yl)Acetic Acid 13797-62-1
Pyrrolidine-1-carboximidamide hydroiodide 102392-83-6
2-BROMO-5-(ISOXAZOL-5-YL)THIOPHENE 138716-31-1
1,3,4-Thiadiazol-2-amine,N-ethyl- 13275-68-8
3-(4-methoxyphenyl)-5-methyl-1,2-oxazole-4-carbonyl chloride 465514-03-8
3-(5-bromo-2-methyl-4-nitroimidazol-1-yl)propanenitrile 139975-78-3
1-(2-[4-(TRIFLUOROMETHYL)PHENYL]-1,3-THIAZOL-4-YL)ETHAN-1-ONE 263564-37-0
(1-Methyl-1H-indazol-3-yl)methanamine 739359-10-5
3-[4-(TRIFLUOROMETHYL)PHENYL]-1H-PYRAZOLE-4-CARBALDEHYDE 306936-65-2
5-[amino(methyl)amino]-4-chloro-2-phenylpyridazin-3-one 41932-99-4
3-Amino-4-bromo-1-methyl-1H-pyrazole 146941-72-2
3-(1H-1,2,4-TRIAZOL-1-YLMETHYL)BENZALDEHYDE 876316-30-2
4-CHLORO-2-(2,4-DICHLOROPHENYL)-5-(1-METHYLHYDRAZINO)-2,3-DIHYDROPYRIDAZIN-3-ONE 175135-85-0
4-(5,5-dimethyl-1,3-dioxan-2-yl)piperidine oxalate 423768-60-9
1-[3-AMINO-5-(4-CHLOROPHENYL)-2-THIENYL]ETHAN-1-ONE 175137-02-7
4-CYANO-5-(METHYLTHIO)-3-[3-(TRIFLUOROMETHYL)PHENYL]THIOPHENE-2-CARBOXYLIC ACID 116492-99-0
4-methylsulfanyl-6-pyridin-3-yl-1,3,5-triazin-2-amine 175204-62-3
4-[(4-METHYLPHENYL)THIO]-3-NITROBENZALDEHYDE 270262-89-0
3-BROMOTHIOPHENE-2-CARBONYL CHLORIDE 25796-68-3
2-(4-chlorophenoxy)-3-nitropyridine 76893-45-3
2-chloromethyl-5-(4-methylphenyl)-1,3,4-oxadiazole 287197-95-9
1-[5-(2,4,6-TRICHLOROPHENYL)-2-FURYL]ETHAN-1-ONE 671192-08-8
4-[(4-CHLOROPHENYL)THIO]THIOPHENE-3-CARBOXYLIC ACID 149609-86-9
3-(AMINOCARBONYL)-1H-INDOL-5-AMINIUM CHLORIDE 306936-36-7

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