CAS号查询库

CAS号是公开的化学物质信息的最权威的集合。CAS号涵盖从1957年至今的科学文献中确定的物质，其他物质可追溯到20世纪初。它也称CAS编号(CAS Registry Number，或称CAS Number，CAS Rn，CAS #)，又称CAS登录号或CAS登记号码，是某种物质(化合物、高分子材料、生物序列(Biological sequences)、混合物或合金)的唯一的数字识别号码。美国化学会的下设组织化学文摘社(Chemical Abstracts Service，简称CAS)负责为每一种出现在文献中的物质分配一个CAS编号，其目的是为了避免化学物质有多种名称的麻烦，使数据库的检索更为方便。如今几乎所有的化学数据库都允许用CAS编号检索。

名称	英文名	物理化学性质	CAS号	分子式
N-[4-(4-chlorophenyl)-1,2,5-oxadiazol-3-yl]-2-methylbenzamide	N-[4-(4-chlorophenyl)-1,2,5-oxadiazol-3-yl]-2-methylbenzamide	分子量：313.74 密度：N/A 沸点：N/A 熔点：N/A	866237-88-9	C₁₆H₁₂ClN₃O₂
N-[4-(4-chlorophenyl)-1,2,5-oxadiazol-3-yl]-2-(4-fluorophenoxy)propanamide	N-[4-(4-chlorophenyl)-1,2,5-oxadiazol-3-yl]-2-(4-fluorophenoxy)propanamide	分子量：361.8 密度：N/A 沸点：N/A 熔点：N/A	866237-89-0	C₁₇H₁₃ClFN₃O₃
4-tert-butyl-N-[4-(4-chlorophenyl)-1,2,5-oxadiazol-3-yl]benzamide	4-tert-butyl-N-[4-(4-chlorophenyl)-1,2,5-oxadiazol-3-yl]benzamide	分子量：355.8 密度：N/A 沸点：N/A 熔点：N/A	866237-92-5	C₁₉H₁₈ClN₃O₂
N-[4-(4-chlorophenyl)-1,2,5-oxadiazol-3-yl]-4-ethoxybenzamide	N-[4-(4-chlorophenyl)-1,2,5-oxadiazol-3-yl]-4-ethoxybenzamide	分子量：343.8 密度：N/A 沸点：N/A 熔点：N/A	866237-93-6	C₁₇H₁₄ClN₃O₃
N-[4-(4-chlorophenyl)-1,2,5-oxadiazol-3-yl]-3-methoxybenzamide	N-[4-(4-chlorophenyl)-1,2,5-oxadiazol-3-yl]-3-methoxybenzamide	分子量：329.74 密度：N/A 沸点：N/A 熔点：N/A	866237-98-1	C₁₆H₁₂ClN₃O₃
4-chloro-N-[4-(4-chlorophenyl)-1,2,5-oxadiazol-3-yl]benzamide	4-chloro-N-[4-(4-chlorophenyl)-1,2,5-oxadiazol-3-yl]benzamide	分子量：334.2 密度：N/A 沸点：N/A 熔点：N/A	866238-00-8	C₁₅H₉Cl₂N₃O₂
6-chloro-4-oxo-N-[2-(phenylcarbamoyl)-1-benzofuran-3-yl]-4H-chromene-2-carboxamide	6-chloro-4-oxo-N-[2-(phenylcarbamoyl)-1-benzofuran-3-yl]-4H-chromene-2-carboxamide	分子量：458.8 密度：N/A 沸点：N/A 熔点：N/A	866238-09-7	C₂₅H₁₅ClN₂O₅
6-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(4-ethylbenzyl)-4-oxo-4H-chromene-2-carboxamide	6-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(4-ethylbenzyl)-4-oxo-4H-chromene-2-carboxamide	分子量：459.9 密度：N/A 沸点：N/A 熔点：N/A	866238-12-2	C₂₃H₂₂ClNO₅S
Cyclohexyl(4-methylphenyl)acetonitrile	Cyclohexyl(4-methylphenyl)acetonitrile	分子量：213.32 密度：N/A 沸点：N/A 熔点：N/A	81311-83-3	C₁₅H₁₉N
6-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(4-methoxybenzyl)-4-oxo-4H-chromene-2-carboxamide	6-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(4-methoxybenzyl)-4-oxo-4H-chromene-2-carboxamide	分子量：461.9 密度：N/A 沸点：N/A 熔点：N/A	866238-15-5	C₂₂H₂₀ClNO₆S
6-chloro-N-(6-ethoxy-1,3-benzothiazol-2-yl)-4-oxo-4H-chromene-2-carboxamide	6-chloro-N-(6-ethoxy-1,3-benzothiazol-2-yl)-4-oxo-4H-chromene-2-carboxamide	分子量：400.8 密度：N/A 沸点：N/A 熔点：N/A	866238-16-6	C₁₉H₁₃ClN₂O₄S
6-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-oxo-N-[4-(propan-2-yl)benzyl]-4H-chromene-2-carboxamide	6-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-oxo-N-[4-(propan-2-yl)benzyl]-4H-chromene-2-carboxamide	分子量：474.0 密度：N/A 沸点：N/A 熔点：N/A	866238-21-3	C₂₄H₂₄ClNO₅S
6-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(4-fluorobenzyl)-4-oxo-4H-chromene-2-carboxamide	6-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(4-fluorobenzyl)-4-oxo-4H-chromene-2-carboxamide	分子量：449.9 密度：N/A 沸点：N/A 熔点：N/A	866238-22-4	C₂₁H₁₇ClFNO₅S
6-chloro-N-{3-[(3-methoxypropyl)carbamoyl]-4,5,6,7-tetrahydro-1-benzothiophen-2-yl}-4-oxo-4H-chromene-2-carboxamide	6-chloro-N-{3-[(3-methoxypropyl)carbamoyl]-4,5,6,7-tetrahydro-1-benzothiophen-2-yl}-4-oxo-4H-chromene-2-carboxamide	分子量：475.0 密度：N/A 沸点：N/A 熔点：N/A	866238-26-8	C₂₃H₂₃ClN₂O₅S
2-(1-Piperidyl)-2-(p-tolyl)acetonitrile	2-(1-Piperidyl)-2-(p-tolyl)acetonitrile	分子量：214.31 密度：N/A 沸点：N/A 熔点：N/A	42419-52-3	C₁₄H₁₈N₂
[4-(Dimethylamino)phenyl](1-piperidinyl)acetonitrile	[4-(Dimethylamino)phenyl](1-piperidinyl)acetonitrile	分子量：243.35 密度：N/A 沸点：N/A 熔点：N/A	123567-59-9	C₁₅H₂₁N₃
2-(3,4-Dichlorophenyl)-2-(1-piperidyl)acetonitrile	2-(3,4-Dichlorophenyl)-2-(1-piperidyl)acetonitrile	分子量：269.17 密度：N/A 沸点：N/A 熔点：N/A	123567-60-2	C₁₃H₁₄Cl₂N₂
6-chloro-N-(3-{[(furan-2-yl)methyl]carbamoyl}-4H,5H,6H-cyclopenta[b]thiophen-2-yl)-4-oxo-4H-chromene-2-carboxamide	6-chloro-N-(3-{[(furan-2-yl)methyl]carbamoyl}-4H,5H,6H-cyclopenta[b]thiophen-2-yl)-4-oxo-4H-chromene-2-carboxamide	分子量：468.9 密度：N/A 沸点：N/A 熔点：N/A	866238-32-6	C₂₃H₁₇ClN₂O₅S
2-(4,6-dimethyl-1-benzofuran-3-yl)-N-(4-ethoxyphenyl)acetamide	2-(4,6-dimethyl-1-benzofuran-3-yl)-N-(4-ethoxyphenyl)acetamide	分子量：323.4 密度：N/A 沸点：N/A 熔点：N/A	866238-39-3	C₂₀H₂₁NO₃
3-methyl-N-(3-phenyl-1,2-oxazol-5-yl)benzamide	3-methyl-N-(3-phenyl-1,2-oxazol-5-yl)benzamide	分子量：278.30 密度：N/A 沸点：N/A 熔点：N/A	866238-43-9	C₁₇H₁₄N₂O₂
4-tert-butyl-N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)benzamide	4-tert-butyl-N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)benzamide	分子量：441.6 密度：N/A 沸点：N/A 熔点：N/A	866238-85-9	C₂₆H₃₅NO₃S
N-(4-tert-butylbenzyl)-3-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)benzamide	N-(4-tert-butylbenzyl)-3-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)benzamide	分子量：420.0 密度：N/A 沸点：N/A 熔点：N/A	866238-86-0	C₂₂H₂₆ClNO₃S
N-(4-tert-butylbenzyl)-3,5-dichloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methoxybenzamide	N-(4-tert-butylbenzyl)-3,5-dichloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methoxybenzamide	分子量：484.4 密度：N/A 沸点：N/A 熔点：N/A	866238-93-9	C₂₃H₂₇Cl₂NO₄S
2-(4-chloro-2-methylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)acetamide	2-(4-chloro-2-methylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)acetamide	分子量：458.0 密度：N/A 沸点：N/A 熔点：N/A	866238-98-4	C₂₄H₂₄ClNO₄S
2-(4-chlorophenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)acetamide	2-(4-chlorophenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)acetamide	分子量：443.9 密度：N/A 沸点：N/A 熔点：N/A	866239-00-1	C₂₃H₂₂ClNO₄S
N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-N-(naphthalen-1-ylmethyl)benzamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-N-(naphthalen-1-ylmethyl)benzamide	分子量：393.5 密度：N/A 沸点：N/A 熔点：N/A	866239-01-2	C₂₃H₂₃NO₃S
4-tert-butyl-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)benzamide	4-tert-butyl-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)benzamide	分子量：435.6 密度：N/A 沸点：N/A 熔点：N/A	866239-02-3	C₂₆H₂₉NO₃S
3-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)benzamide	3-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)benzamide	分子量：413.9 密度：N/A 沸点：N/A 熔点：N/A	866239-03-4	C₂₂H₂₀ClNO₃S
N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-fluoro-N-(naphthalen-1-ylmethyl)benzamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-fluoro-N-(naphthalen-1-ylmethyl)benzamide	分子量：397.5 密度：N/A 沸点：N/A 熔点：N/A	866239-04-5	C₂₂H₂₀FNO₃S
N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)thiophene-2-carboxamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)thiophene-2-carboxamide	分子量：385.5 密度：N/A 沸点：N/A 熔点：N/A	866239-06-7	C₂₀H₁₉NO₃S₂
4-butyl-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)cyclohexanecarboxamide	4-butyl-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)cyclohexanecarboxamide	分子量：441.6 密度：N/A 沸点：N/A 熔点：N/A	956967-89-8	C₂₆H₃₅NO₃S
1,2-Diethyl 1-[2-methoxy-1-(methoxycarbonyl)-2-oxoethyl]-1,2-hydrazinedicarboxylate	1,2-Diethyl 1-[2-methoxy-1-(methoxycarbonyl)-2-oxoethyl]-1,2-hydrazinedicarboxylate	分子量：306.27 密度：N/A 沸点：N/A 熔点：N/A	123675-91-2	C₁₁H₁₈N₂O₈
N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)furan-2-carboxamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)furan-2-carboxamide	分子量：369.4 密度：N/A 沸点：N/A 熔点：N/A	866239-12-5	C₂₀H₁₉NO₄S
4-bromo-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)benzamide	4-bromo-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)benzamide	分子量：458.4 密度：N/A 沸点：N/A 熔点：N/A	866239-13-6	C₂₂H₂₀BrNO₃S
4-bromo-N-(furan-2-ylmethyl)-N-(3,4,5-trimethoxybenzyl)benzamide	4-bromo-N-(furan-2-ylmethyl)-N-(3,4,5-trimethoxybenzyl)benzamide	分子量：460.3 密度：N/A 沸点：N/A 熔点：N/A	866239-21-6	C₂₂H₂₂BrNO₅
2-(4-bromophenoxy)-N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)acetamide	2-(4-bromophenoxy)-N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)acetamide	分子量：494.4 密度：N/A 沸点：N/A 熔点：N/A	866239-22-7	C₂₃H₂₈BrNO₄S
N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)benzamide	N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)benzamide	分子量：385.5 密度：N/A 沸点：N/A 熔点：N/A	866239-26-1	C₂₂H₂₇NO₃S
N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-(2-methylpropoxy)benzamide	N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-(2-methylpropoxy)benzamide	分子量：457.6 密度：N/A 沸点：N/A 熔点：N/A	866239-27-2	C₂₆H₃₅NO₄S
N-(4-tert-butylbenzyl)-2-(4-chloro-2-methylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)acetamide	N-(4-tert-butylbenzyl)-2-(4-chloro-2-methylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)acetamide	分子量：464.0 密度：N/A 沸点：N/A 熔点：N/A	866239-31-8	C₂₄H₃₀ClNO₄S
N-(4-tert-butylbenzyl)-2-(4-chloro-3,5-dimethylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)acetamide	N-(4-tert-butylbenzyl)-2-(4-chloro-3,5-dimethylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)acetamide	分子量：478.0 密度：N/A 沸点：N/A 熔点：N/A	866239-32-9	C₂₅H₃₂ClNO₄S
N-(4-tert-butylbenzyl)-3,5-dichloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-ethoxybenzamide	N-(4-tert-butylbenzyl)-3,5-dichloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-ethoxybenzamide	分子量：498.5 密度：N/A 沸点：N/A 熔点：N/A	866239-33-0	C₂₄H₂₉Cl₂NO₄S
N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-(pentyloxy)benzamide	N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-(pentyloxy)benzamide	分子量：471.7 密度：N/A 沸点：N/A 熔点：N/A	866239-34-1	C₂₇H₃₇NO₄S
N-(4-tert-butylbenzyl)-2-(2,4-dichlorophenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)acetamide	N-(4-tert-butylbenzyl)-2-(2,4-dichlorophenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)acetamide	分子量：484.4 密度：N/A 沸点：N/A 熔点：N/A	866239-36-3	C₂₃H₂₇Cl₂NO₄S
N-(4-tert-butylbenzyl)-5-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-1-benzofuran-2-carboxamide	N-(4-tert-butylbenzyl)-5-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-1-benzofuran-2-carboxamide	分子量：474.0 密度：N/A 沸点：N/A 熔点：N/A	866239-37-4	C₂₅H₂₈ClNO₄S
2-(4-chloro-3,5-dimethylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)acetamide	2-(4-chloro-3,5-dimethylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)acetamide	分子量：472.0 密度：N/A 沸点：N/A 熔点：N/A	866239-40-9	C₂₅H₂₆ClNO₄S
2-(4-chloro-3-methylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)acetamide	2-(4-chloro-3-methylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)acetamide	分子量：458.0 密度：N/A 沸点：N/A 熔点：N/A	866239-44-3	C₂₄H₂₄ClNO₄S
N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)benzamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)benzamide	分子量：379.5 密度：N/A 沸点：N/A 熔点：N/A	866239-47-6	C₂₂H₂₁NO₃S
2-(3-chlorophenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)acetamide	2-(3-chlorophenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)acetamide	分子量：443.9 密度：N/A 沸点：N/A 熔点：N/A	866239-52-3	C₂₃H₂₂ClNO₄S
2-(2,4-dichlorophenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)acetamide	2-(2,4-dichlorophenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(naphthalen-1-ylmethyl)acetamide	分子量：478.4 密度：N/A 沸点：N/A 熔点：N/A	866239-53-4	C₂₃H₂₁Cl₂NO₄S
1-(3-Chlorobenzyl)-1-(furan-2-ylmethyl)-3-phenylurea	1-(3-Chlorobenzyl)-1-(furan-2-ylmethyl)-3-phenylurea	分子量：340.8 密度：N/A 沸点：N/A 熔点：N/A	866239-55-6	C₁₉H₁₇ClN₂O₂