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
3-methoxy-N-{4-[4-(propan-2-yloxy)phenyl]-1,2,5-oxadiazol-3-yl}benzamide	3-methoxy-N-{4-[4-(propan-2-yloxy)phenyl]-1,2,5-oxadiazol-3-yl}benzamide	分子量：353.4 密度：N/A 沸点：N/A 熔点：N/A	898611-10-4	C₁₉H₁₉N₃O₄
N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-methylpropanamide	N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-methylpropanamide	分子量：303.36 密度：N/A 沸点：N/A 熔点：N/A	898611-16-0	C₁₆H₂₁N₃O₃
N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-3-ethoxybenzamide	N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-3-ethoxybenzamide	分子量：381.4 密度：N/A 沸点：N/A 熔点：N/A	898611-17-1	C₂₁H₂₃N₃O₄
N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-phenoxyacetamide	N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-phenoxyacetamide	分子量：367.4 密度：N/A 沸点：N/A 熔点：N/A	898611-21-7	C₂₀H₂₁N₃O₄
N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-(2-fluorophenoxy)propanamide	N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-(2-fluorophenoxy)propanamide	分子量：399.4 密度：N/A 沸点：N/A 熔点：N/A	898611-23-9	C₂₁H₂₂FN₃O₄
N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-(4-chlorophenoxy)acetamide	N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-(4-chlorophenoxy)acetamide	分子量：401.8 密度：N/A 沸点：N/A 熔点：N/A	898611-26-2	C₂₀H₂₀ClN₃O₄
N-(4,5,6,7-tetrahydro-2,1-benzoxazol-3-yl)-2,3-dihydro-1,4-benzodioxine-2-carboxamide	N-(4,5,6,7-tetrahydro-2,1-benzoxazol-3-yl)-2,3-dihydro-1,4-benzodioxine-2-carboxamide	分子量：300.31 密度：N/A 沸点：N/A 熔点：N/A	898611-30-8	C₁₆H₁₆N₂O₄
N-[3-(4-bromophenyl)-1,2,4-thiadiazol-5-yl]furan-2-carboxamide	N-[3-(4-bromophenyl)-1,2,4-thiadiazol-5-yl]furan-2-carboxamide	分子量：350.19 密度：N/A 沸点：N/A 熔点：N/A	898611-39-7	C₁₃H₈BrN₃O₂S
4-propoxy-N-(4,5,6,7-tetrahydro-2,1-benzoxazol-3-yl)benzamide	4-propoxy-N-(4,5,6,7-tetrahydro-2,1-benzoxazol-3-yl)benzamide	分子量：300.35 密度：N/A 沸点：N/A 熔点：N/A	898611-46-6	C₁₇H₂₀N₂O₃
N-[3-(4-bromophenyl)-1,2,4-thiadiazol-5-yl]-2-(4-methoxyphenyl)acetamide	N-[3-(4-bromophenyl)-1,2,4-thiadiazol-5-yl]-2-(4-methoxyphenyl)acetamide	分子量：404.3 密度：N/A 沸点：N/A 熔点：N/A	898611-48-8	C₁₇H₁₄BrN₃O₂S
N-[3-(4-bromophenyl)-1,2,4-thiadiazol-5-yl]thiophene-2-carboxamide	N-[3-(4-bromophenyl)-1,2,4-thiadiazol-5-yl]thiophene-2-carboxamide	分子量：366.3 密度：N/A 沸点：N/A 熔点：N/A	898611-71-7	C₁₃H₈BrN₃OS₂
N-[3-(4-bromophenyl)-1,2,4-thiadiazol-5-yl]-2-(4-fluorophenoxy)acetamide	N-[3-(4-bromophenyl)-1,2,4-thiadiazol-5-yl]-2-(4-fluorophenoxy)acetamide	分子量：408.2 密度：N/A 沸点：N/A 熔点：N/A	898611-72-8	C₁₆H₁₁BrFN₃O₂S
N-[3-(4-bromophenyl)-1,2,4-thiadiazol-5-yl]-3-methylbutanamide	N-[3-(4-bromophenyl)-1,2,4-thiadiazol-5-yl]-3-methylbutanamide	分子量：340.24 密度：N/A 沸点：N/A 熔点：N/A	898628-39-2	C₁₃H₁₄BrN₃OS
3-chloro-N-(4,5,6,7-tetrahydro-2,1-benzoxazol-3-yl)benzamide	3-chloro-N-(4,5,6,7-tetrahydro-2,1-benzoxazol-3-yl)benzamide	分子量：276.72 密度：N/A 沸点：N/A 熔点：N/A	898628-42-7	C₁₄H₁₃ClN₂O₂
N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}-2,3-dihydro-1,4-benzodioxine-2-carboxamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}-2,3-dihydro-1,4-benzodioxine-2-carboxamide	分子量：471.5 密度：N/A 沸点：N/A 熔点：N/A	879476-87-6	C₂₄H₂₂FNO₆S
N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methylbutanamide	N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methylbutanamide	分子量：409.9 密度：N/A 沸点：N/A 熔点：N/A	879775-34-5	C₂₀H₂₄ClNO₄S
N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)pentanamide	N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)pentanamide	分子量：409.9 密度：N/A 沸点：N/A 熔点：N/A	898629-87-3	C₂₀H₂₄ClNO₄S
N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)propanamide	N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)propanamide	分子量：381.9 密度：N/A 沸点：N/A 熔点：N/A	898629-89-5	C₁₈H₂₀ClNO₄S
N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)butanamide	N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)butanamide	分子量：395.9 密度：N/A 沸点：N/A 熔点：N/A	879763-50-5	C₁₉H₂₂ClNO₄S
(2E)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}-3-(4-methylphenyl)prop-2-enamide	(2E)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}-3-(4-methylphenyl)prop-2-enamide	分子量：453.5 密度：N/A 沸点：N/A 熔点：N/A	898629-92-0	C₂₅H₂₄FNO₄S
(2E)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}-3-(furan-2-yl)prop-2-enamide	(2E)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}-3-(furan-2-yl)prop-2-enamide	分子量：429.5 密度：N/A 沸点：N/A 熔点：N/A	898629-95-3	C₂₂H₂₀FNO₅S
N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-ethyl-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}butanamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-ethyl-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}butanamide	分子量：407.5 密度：N/A 沸点：N/A 熔点：N/A	879469-79-1	C₂₁H₂₆FNO₄S
1-(4-chlorophenyl)-N-(5-methyl-1,3,4-thiadiazol-2-yl)-4-oxo-1,4-dihydropyridazine-3-carboxamide	1-(4-chlorophenyl)-N-(5-methyl-1,3,4-thiadiazol-2-yl)-4-oxo-1,4-dihydropyridazine-3-carboxamide	分子量：347.8 密度：N/A 沸点：N/A 熔点：N/A	895827-92-6	C₁₄H₁₀ClN₅O₂S
N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}-2-phenylacetamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}-2-phenylacetamide	分子量：427.5 密度：N/A 沸点：N/A 熔点：N/A	879479-75-1	C₂₃H₂₂FNO₄S
(4E)-1-(1,1-dioxidotetrahydrothiophen-3-yl)-5-(3-hydroxyphenyl)-4-[hydroxy(thiophen-2-yl)methylidene]pyrrolidine-2,3-dione	(4E)-1-(1,1-dioxidotetrahydrothiophen-3-yl)-5-(3-hydroxyphenyl)-4-[hydroxy(thiophen-2-yl)methylidene]pyrrolidine-2,3-dione	分子量：419.5 密度：N/A 沸点：N/A 熔点：N/A	898610-23-6	C₁₉H₁₇NO₆S₂
N-{5-[(4-fluorobenzyl)sulfanyl]-1,3,4-thiadiazol-2-yl}-4-oxo-1-phenyl-1,4-dihydropyridazine-3-carboxamide	N-{5-[(4-fluorobenzyl)sulfanyl]-1,3,4-thiadiazol-2-yl}-4-oxo-1-phenyl-1,4-dihydropyridazine-3-carboxamide	分子量：439.5 密度：N/A 沸点：N/A 熔点：N/A	892624-36-1	C₂₀H₁₄FN₅O₂S₂
N-[4-(4-fluorophenyl)-1,2,5-oxadiazol-3-yl]-2,3-dihydro-1,4-benzodioxine-2-carboxamide	N-[4-(4-fluorophenyl)-1,2,5-oxadiazol-3-yl]-2,3-dihydro-1,4-benzodioxine-2-carboxamide	分子量：341.29 密度：N/A 沸点：N/A 熔点：N/A	898615-28-6	C₁₇H₁₂FN₃O₄
1-(4-chlorophenyl)-4-oxo-N-(pyridin-3-yl)-1,4-dihydropyridazine-3-carboxamide	1-(4-chlorophenyl)-4-oxo-N-(pyridin-3-yl)-1,4-dihydropyridazine-3-carboxamide	分子量：326.74 密度：N/A 沸点：N/A 熔点：N/A	898615-86-6	C₁₆H₁₁ClN₄O₂
3,4,5-trimethoxy-N-(4,5,6,7-tetrahydrobenzo[c]isoxazol-3-yl)benzamide	3,4,5-trimethoxy-N-(4,5,6,7-tetrahydrobenzo[c]isoxazol-3-yl)benzamide	分子量：332.4 密度：N/A 沸点：N/A 熔点：N/A	898631-79-3	C₁₇H₂₀N₂O₅
N-(4,5,6,7-tetrahydro-2,1-benzoxazol-3-yl)thiophene-2-carboxamide	N-(4,5,6,7-tetrahydro-2,1-benzoxazol-3-yl)thiophene-2-carboxamide	分子量：248.30 密度：N/A 沸点：N/A 熔点：N/A	898631-85-1	C₁₂H₁₂N₂O₂S
4-fluoro-N-(4,5,6,7-tetrahydrobenzo[c]isoxazol-3-yl)benzamide	4-fluoro-N-(4,5,6,7-tetrahydrobenzo[c]isoxazol-3-yl)benzamide	分子量：260.26 密度：N/A 沸点：N/A 熔点：N/A	898631-91-9	C₁₄H₁₃FN₂O₂
N-[4-(azepan-1-ylsulfonyl)phenyl]-1-(4-fluorophenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide	N-[4-(azepan-1-ylsulfonyl)phenyl]-1-(4-fluorophenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide	分子量：470.5 密度：N/A 沸点：N/A 熔点：N/A	898632-92-3	C₂₃H₂₃FN₄O₄S
1-(4-fluorophenyl)-4-oxo-N-(4-sulfamoylphenyl)-1,4-dihydropyridazine-3-carboxamide	1-(4-fluorophenyl)-4-oxo-N-(4-sulfamoylphenyl)-1,4-dihydropyridazine-3-carboxamide	分子量：388.4 密度：N/A 沸点：N/A 熔点：N/A	898632-98-9	C₁₇H₁₃FN₄O₄S
Methyl 2-({[1-(4-fluorophenyl)-4-oxo-1,4-dihydropyridazin-3-yl]carbonyl}amino)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate	Methyl 2-({[1-(4-fluorophenyl)-4-oxo-1,4-dihydropyridazin-3-yl]carbonyl}amino)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate	分子量：427.5 密度：N/A 沸点：N/A 熔点：N/A	898619-51-7	C₂₁H₁₈FN₃O₄S
1-(4-fluorophenyl)-N-{3-[(2-methoxyethyl)carbamoyl]-4,5,6,7-tetrahydro-1-benzothiophen-2-yl}-4-oxo-1,4-dihydropyridazine-3-carboxamide	1-(4-fluorophenyl)-N-{3-[(2-methoxyethyl)carbamoyl]-4,5,6,7-tetrahydro-1-benzothiophen-2-yl}-4-oxo-1,4-dihydropyridazine-3-carboxamide	分子量：470.5 密度：N/A 沸点：N/A 熔点：N/A	898619-90-4	C₂₃H₂₃FN₄O₄S
N-[5-(benzylsulfonyl)-1,3,4-thiadiazol-2-yl]-3-chloro-1-benzothiophene-2-carboxamide	N-[5-(benzylsulfonyl)-1,3,4-thiadiazol-2-yl]-3-chloro-1-benzothiophene-2-carboxamide	分子量：450.0 密度：N/A 沸点：N/A 熔点：N/A	898636-20-9	C₁₈H₁₂ClN₃O₃S₃
4-chloro-N-[5-(methylsulfonyl)-1,3,4-thiadiazol-2-yl]benzamide	4-chloro-N-[5-(methylsulfonyl)-1,3,4-thiadiazol-2-yl]benzamide	分子量：317.8 密度：N/A 沸点：N/A 熔点：N/A	895850-71-2	C₁₀H₈ClN₃O₃S₂
(3,6-Dichloro-1-benzothiophen-2-yl){4-[2-(pyridin-2-yl)ethyl]piperazin-1-yl}methanone	(3,6-Dichloro-1-benzothiophen-2-yl){4-[2-(pyridin-2-yl)ethyl]piperazin-1-yl}methanone	分子量：420.4 密度：N/A 沸点：N/A 熔点：N/A	885728-51-8	C₂₀H₁₉Cl₂N₃OS
1-[(5-Fluoro-3-methyl-1-benzofuran-2-yl)carbonyl]-4-(2-pyridin-2-ylethyl)piperazine	1-[(5-Fluoro-3-methyl-1-benzofuran-2-yl)carbonyl]-4-(2-pyridin-2-ylethyl)piperazine	分子量：367.4 密度：N/A 沸点：N/A 熔点：N/A	885735-53-5	C₂₁H₂₂FN₃O₂
1-(2-Pyridin-2-ylethyl)-4-[(3,5,6-trimethyl-1-benzofuran-2-yl)carbonyl]piperazine	1-(2-Pyridin-2-ylethyl)-4-[(3,5,6-trimethyl-1-benzofuran-2-yl)carbonyl]piperazine	分子量：377.5 密度：N/A 沸点：N/A 熔点：N/A	885734-73-6	C₂₃H₂₇N₃O₂
2-(2-fluorophenoxy)-N-[4-(4-fluorophenyl)-1,2,5-oxadiazol-3-yl]butanamide	2-(2-fluorophenoxy)-N-[4-(4-fluorophenyl)-1,2,5-oxadiazol-3-yl]butanamide	分子量：359.3 密度：N/A 沸点：N/A 熔点：N/A	898618-38-7	C₁₈H₁₅F₂N₃O₃
(2E)-3-(furan-2-yl)-N-[4-(thiophen-2-yl)-1,2,5-oxadiazol-3-yl]prop-2-enamide	(2E)-3-(furan-2-yl)-N-[4-(thiophen-2-yl)-1,2,5-oxadiazol-3-yl]prop-2-enamide	分子量：287.30 密度：N/A 沸点：N/A 熔点：N/A	898618-59-2	C₁₃H₉N₃O₃S
(2E)-N-[4-(4-fluorophenyl)-1,2,5-oxadiazol-3-yl]-3-phenylprop-2-enamide	(2E)-N-[4-(4-fluorophenyl)-1,2,5-oxadiazol-3-yl]-3-phenylprop-2-enamide	分子量：309.29 密度：N/A 沸点：N/A 熔点：N/A	898618-70-7	C₁₇H₁₂FN₃O₂
2-(2-fluorophenoxy)-N-[4-(4-fluorophenyl)-1,2,5-oxadiazol-3-yl]propanamide	2-(2-fluorophenoxy)-N-[4-(4-fluorophenyl)-1,2,5-oxadiazol-3-yl]propanamide	分子量：345.30 密度：N/A 沸点：N/A 熔点：N/A	898618-79-6	C₁₇H₁₃F₂N₃O₃
4-Benzoxazol-2-ylpiperidyl 2-thienyl ketone	4-Benzoxazol-2-ylpiperidyl 2-thienyl ketone	分子量：312.4 密度：N/A 沸点：N/A 熔点：N/A	898618-91-2	C₁₇H₁₆N₂O₂S
4-methoxy-N-{[1-(morpholin-4-yl)cyclohexyl]methyl}benzamide	4-methoxy-N-{[1-(morpholin-4-yl)cyclohexyl]methyl}benzamide	分子量：332.4 密度：N/A 沸点：N/A 熔点：N/A	939766-30-0	C₁₉H₂₈N₂O₃
1-(4-Fluorophenyl)-4-(1,2,3-thiadiazol-4-ylcarbonyl)piperazine	1-(4-Fluorophenyl)-4-(1,2,3-thiadiazol-4-ylcarbonyl)piperazine	分子量：292.33 密度：N/A 沸点：N/A 熔点：N/A	898619-03-9	C₁₃H₁₃FN₄OS
N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methoxybenzamide	N-{[5-(4-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methoxybenzamide	分子量：459.9 密度：N/A 沸点：N/A 熔点：N/A	898619-44-8	C₂₃H₂₂ClNO₅S
2-(2-fluorophenoxy)-N-[4-(thiophen-2-yl)-1,2,5-oxadiazol-3-yl]butanamide	2-(2-fluorophenoxy)-N-[4-(thiophen-2-yl)-1,2,5-oxadiazol-3-yl]butanamide	分子量：347.4 密度：N/A 沸点：N/A 熔点：N/A	898485-21-7	C₁₆H₁₄FN₃O₃S
3,6-dimethyl-N-[4-(2-thienyl)-1,2,5-oxadiazol-3-yl]-1-benzofuran-2-carboxamide	3,6-dimethyl-N-[4-(2-thienyl)-1,2,5-oxadiazol-3-yl]-1-benzofuran-2-carboxamide	分子量：339.4 密度：N/A 沸点：N/A 熔点：N/A	898485-33-1	C₁₇H₁₃N₃O₃S