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
2-((2-Azaspiro[3.3]heptan-6-yloxy)methyl)-5-(tert-butyl)oxazole 1708160-23-9
2-(2-Azaspiro[3.3]heptan-6-yloxy)-1-morpholinoethanone 1707364-58-6
1-(2,2,3,3,3-Pentafluoropropyl)pyrazole 1707679-40-0
rac-(1R,2R)-2-[1-(propan-2-yl)-1H-pyrazol-4-yl]cyclopropane-1-carboxylic acid 2227645-99-8
N-(Cyanomethyl)-3,5-dimethyl-N,1-dipropylpyrazole-4-carboxamide 1645507-99-8
1-Acetyl-N-(cyanomethyl)-N-propylpiperidine-2-carboxamide 1645312-69-1
ethyl 2-[(2S)-3-ethyl-4-hydroxy-5-oxo-2H-furan-2-yl]acetate 457604-25-0
4-Isopropyl-2-(pyrimidin-2-yl)-4,5-dihydrooxazole 1616781-84-0
(4aR,7aR)-4-methyl-octahydropyrrolo[3,4-b]morpholine 1932794-80-3
(2R)-2-(2-chlorophenyl)-2-acetamidoacetic acid 1689860-86-3
2-[3-[3-(3-Bromophenyl)phenyl]phenyl]-4,6-diphenyl-1,3,5-triazine 1616486-16-8
3-(3-((4-Hydroxypiperidin-1-yl)sulfonyl)-4-methoxyphenyl)propanoic acid 1708301-13-6
(5-Amino-7-methoxy-[1,2,4]triazolo[1,5-c]quinazolin-2-yl)methanol 1616599-19-9
3-Phenethyl-1H-1,2,4-triazole-5-carboxylic acid 1622854-89-0
3-(2-Thienylmethyl)-1H-1,2,4-triazole-5-carboxylic acid 1622854-87-8
(2S)-2-(2,3-dihydro-1,4-benzodioxin-6-yl)propan-1-ol 2230789-55-4
3-Ethylsulfonylpicolinic acid 1421953-17-4
3-((4-Methylpiperazin-1-yl)methyl)-5-(trifluoromethyl)benzoic acid 1616670-62-2
(3R,4R)-N,4-Dimethyl-1-(triphenylmethyl)-3-piperidinamine 1616760-93-0
2-cyano-3-(3-methoxy-4-{[(4-methylphenyl)carbamoyl]methoxy}phenyl)-N-methylprop-2-enamide 733800-59-4
2,2',3,3',5-Pentabromobiphenyl 2181002-64-0
2-((1,3-Dimethyl-4-(methylsulfonyl)-1H-pyrazol-5-yl)oxy)acetic acid 1707391-46-5
6-Chloro-8-isopropyl-3,4-dihydro-1H-pyrano[3,4-c]pyridine-5-carbonitrile 1707365-06-7
2-Amino-4-((trifluoromethyl)sulfinyl)phenol 1616682-59-7
N-(3,4-difluorophenyl)-2-fluoro-5-iodobenzamide 1616809-53-0
Ethyl 5-methyl-1-(2-methylbenzyl)-1H-pyrazole-3-carboxylate 1622855-11-1
6-Chloro-8-cyclopropyl-3,4-dihydro-1H-pyrano[3,4-c]pyridine-5-carbonitrile 1707679-57-9
ethyl 1-(2-fluorobenzyl)-5-methyl-1H-pyrazole-3-carboxylate 1622855-16-6
Ethyl 5-methyl-1-((6-methylpyridin-3-yl)methyl)-1H-pyrazole-3-carboxylate 1622855-13-3
tert-Butyl 7-chloro-5-oxo-4,5-dihydro-1H-benzo[c]azepine-2(3H)-carboxylate 1708250-61-6
5-Bromo-N-ethyl-2-isobutoxynicotinamide 1707568-43-1
5,6-Dichloro-N-((tetrahydro-2H-pyran-4-yl)methyl)pyridin-3-amine 1774899-37-4
1-(Cyclopropylmethyl)-5-iodo-4-oxo-1,4-dihydropyridine-3-carbonitrile 1707371-89-8
5-Iodo-1-(2-methoxyethyl)-4-oxo-1,4-dihydropyridine-3-carbonitrile 1774899-93-2
5-Bromo-1-ethyl-4-oxo-1,4-dihydropyridine-3-carbonitrile 1710202-10-0
5-Bromo-1-(cyclopropylmethyl)-4-oxo-1,4-dihydropyridine-3-carbonitrile 1779122-60-9
4-Chloro-[3,4'-bipyridine]-5-carbonitrile 1710661-25-8
4-Chloro-5-(4-nitrophenyl)nicotinonitrile 1436405-49-0
6-Ethyl-5,6,7,8-tetrahydro-1,6-naphthyridin-2(1H)-one 1710345-25-7
3-Bromo-6-isopropyl-5,6,7,8-tetrahydro-1,6-naphthyridin-2(1H)-one 1707371-94-5
3-Chloro-6-isopropyl-5,6,7,8-tetrahydro-1,6-naphthyridin-2(1H)-one 1779123-08-8
2,3-Dichloro-6-isopropyl-5,6,7,8-tetrahydro-1,6-naphthyridine 1708401-30-2
5-Bromo-6-chloro-2-phenylnicotinonitrile 1708401-31-3
6-Oxo-2-phenyl-1,6-dihydropyridine-3-carbonitrile 1187433-45-9
5-Bromo-2-(2-chlorophenyl)-6-oxo-1,6-dihydropyridine-3-carbonitrile 1707568-52-2
5-Chloro-2-(2-chlorophenyl)-6-oxo-1,6-dihydropyridine-3-carbonitrile 1707581-48-3
2-(2-Chlorophenyl)-6-oxo-1,6-dihydropyridine-3-carbonitrile 1707727-68-1
6-Oxo-1,6-dihydro-[2,3'-bipyridine]-3-carbonitrile 1707581-50-7
5-Chloro-6-oxo-1,6-dihydro-[2,3'-bipyridine]-3-carbonitrile 1707371-96-7
5,6-Dichloro-[2,3'-bipyridine]-3-carbonitrile 1774900-99-0

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