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-(1,2-dimethyl-1H-indol-3-yl)-2-oxoethyl)-6-(2-fluorophenyl)pyridazin-3(2H)-one 1282129-85-4
3-(5-Ethylfuran-2-yl)-1lambda6-thiomorpholine-1,1-dione 1315366-81-4
2-(4-methoxy-1H-indol-1-yl)-N-[(2Z)-4-(pyridin-4-yl)-1,3-thiazol-2(3H)-ylidene]acetamide 1282119-28-1
N-[(2E)-5-cyclohexyl-1,3,4-thiadiazol-2(3H)-ylidene]-2-[3-(4-methylpiperidin-1-yl)-6-oxopyridazin-1(6H)-yl]acetamide 1282109-74-3
4-{[({3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetyl)amino]methyl}benzoic acid 1282142-70-4
N-(2-chlorophenyl)-1-(1H-tetrazol-1-yl)cyclohexanecarboxamide 1282124-80-4
N-(1-benzylpiperidin-4-yl)-3-(4-methoxy-1H-indol-1-yl)propanamide 1282109-77-6
N-benzyl-N-methyl-1-(3-phenyl[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperidine-4-carboxamide 1282122-65-9
N-(1-benzylpiperidin-4-yl)-2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]acetamide 1282119-31-6
5-bromo-N-[1-(cyclobutylcarbonyl)piperidin-4-yl]furan-2-carboxamide 1282122-67-1
N-[1-(1H-indol-2-ylcarbonyl)piperidin-4-yl]-2-phenylacetamide 1282103-29-0
methyl N-{[3-(4-methylpiperidin-1-yl)-6-oxopyridazin-1(6H)-yl]acetyl}glycinate 1282120-98-2
N-[(2Z)-4-tert-butyl-1,3-thiazol-2(3H)-ylidene]-2-[3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide 1282119-34-9
N-[(2Z)-3,4,5,6,7,8-hexahydro-2H-cyclohepta[d][1,3]thiazol-2-ylidene]-2-[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide 1282098-06-9
2-[2-(6,7-dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)-2-oxoethyl]-6-[4-(methylsulfanyl)phenyl]pyridazin-3(2H)-one 1282142-72-6
N-(3-methoxyphenyl)-2-(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetamide 1282114-65-1
6-[4-(methylsulfanyl)phenyl]-2-{2-oxo-2-[4-(2-pyridyl)piperazino]ethyl}-3(2H)-pyridazinone 1282101-03-4
N-(3-methoxyphenyl)-1-(3-phenyl[1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperidine-4-carboxamide 1282095-99-1
N-[(2Z)-4-tert-butyl-1,3-thiazol-2(3H)-ylidene]-2-(6-oxo-3-phenylpyridazin-1(6H)-yl)acetamide 1282142-57-7
5-bromo-N-[2-(4-oxoquinazolin-3(4H)-yl)ethyl]furan-2-carboxamide 1282142-64-6
N-[2-(1H-imidazol-4-yl)ethyl]-5-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxamide 1282130-15-7
6-[4-(methylsulfanyl)phenyl]-2-(2-morpholino-2-oxoethyl)-3(2H)-pyridazinone 1282096-15-4
N-{[3-(naphthalen-1-yl)-6-oxopyridazin-1(6H)-yl]acetyl}glycylglycine 1282123-95-8
N-(3-methoxypropyl)-2-{3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetamide 1282130-17-9
N-(2-chlorobenzyl)-2-(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetamide 1282098-13-8
2-(3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-(6-methoxypyridin-3-yl)acetamide 1282112-55-3
3-(6-chloro-1H-indol-1-yl)-N-(2-methyl-2,6-dihydro-4H-thieno[3,4-c]pyrazol-3-yl)propanamide 1282119-39-4
2-(benzylamino)-N-(2-thienylmethyl)-1,3-thiazole-4-carboxamide 1282131-98-9
4-(4-methoxyphenyl)-N-[(2Z)-4-(pyridin-2-yl)-1,3-thiazol-2(3H)-ylidene]-1,2,3-thiadiazole-5-carboxamide 1282121-03-2
methyl 4-{[(2,3-dimethyl-5-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidin-6-yl)carbonyl]amino}benzoate 1282142-71-5
2-[3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-[3-(methylsulfanyl)phenyl]acetamide 1282124-89-3
N-(2-fluorobenzyl)-2-[3-(1-naphthyl)-6-oxo-1(6H)-pyridazinyl]acetamide 1282125-08-9
N-[4-methoxy-3-(1H-pyrrol-1-yl)phenyl]pyridine-2-carboxamide 1282114-67-3
2-(3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(3,4-dimethoxybenzyl)acetamide 1282114-68-4
N-(3,5-dimethoxyphenyl)-2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]acetamide 1282119-45-2
N-[1-(1H-indol-3-ylcarbonyl)piperidin-4-yl]pyridine-3-carboxamide 1282125-19-2
ethyl (2-{[(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetyl]amino}-1,3-thiazol-4-yl)acetate 1282114-69-5
N-cyclopentyl-2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]acetamide 1282132-03-9
4-(4-oxo-1,2,3-benzotriazin-3(4H)-yl)-N-[(2Z)-4-(pyridin-2-yl)-1,3-thiazol-2(3H)-ylidene]butanamide 1282121-13-4
2-{2-[4-(3-methoxyphenyl)piperazino]-2-oxoethyl}-6-[4-(methylsulfanyl)phenyl]-3(2H)-pyridazinone 1282142-78-2
4-[({[3-(4-chlorophenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)methyl]benzoic acid 1282096-18-7
2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]-N-(4-phenoxyphenyl)acetamide 1282117-82-1
N-(3-methylbutyl)-2-[3-(4-methylpiperidin-1-yl)-6-oxopyridazin-1(6H)-yl]acetamide 1282125-41-0
N-[(7,8-dimethoxy-1-oxophthalazin-2(1H)-yl)acetyl]glycine 1282121-36-1
N-[(2Z)-4-tert-butyl-1,3-thiazol-2(3H)-ylidene]-2-{3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetamide 1282114-70-8
N-(1H-indol-6-yl)-2-[3-(morpholin-4-yl)-6-oxopyridazin-1(6H)-yl]acetamide 1282142-86-2
N-[1-(cyclobutylcarbonyl)piperidin-4-yl]-2,1,3-benzothiadiazole-4-sulfonamide 1282118-88-0
2-[3-(2-chlorophenyl)-6-oxo-1(6H)-pyridazinyl]-N~1~-(4-methoxyphenethyl)acetamide 1282096-22-3
2-(3-(4-chlorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(1-methyl-1H-pyrazol-4-yl)acetamide 1282132-04-0
2-[3-(4-chlorophenyl)-6-oxo-1(6H)-pyridazinyl]-N~1~-isobutylacetamide 1282119-50-9

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