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	Molecular Formula	Chemical & Physical Properties	CAS Number
Sulfurol	C₆H₉NOS	Molecular Weight:143.20 Density:1.2±0.1 g/cm3 Boiling Point:272.4±0.0 °C at 760 mmHg Melting Point:N/A	137-00-8
3-Heptanone	C₇H₁₄O	Molecular Weight:114.186 Density:0.8±0.1 g/cm3 Boiling Point:148.5±3.0 °C at 760 mmHg Melting Point:-39 °C	106-35-4
hydracrylonitrile	C₃H₅NO	Molecular Weight:71.078 Density:1.0±0.1 g/cm3 Boiling Point:229.6±13.0 °C at 760 mmHg Melting Point:-46 °C	109-78-4
trans-4-Aminocyclohexanol hydrochloride (1:1)	C₆H₁₄ClNO	Molecular Weight:151.635 Density:N/A Boiling Point:201.1ºC at 760mmHg Melting Point:225-227 °C(lit.)	50910-54-8
Aniline sulfate	C₆H₉NO₄S	Molecular Weight:191.20500 Density:1.38 Boiling Point:184.4ºC at 760 mmHg Melting Point:-6ºC	542-16-5
1,2,4-TRIMETHYL BENZENE	C₉H₁₂	Molecular Weight:120.19200 Density:0.88 Boiling Point:168 °C(lit.) Melting Point:-44 °C	95-63-6
(3-Amino-4-chlorophenyl)boronic acid hydrochloride	C₆H₈BCl₂NO₂	Molecular Weight:207.85000 Density:N/A Boiling Point:393.1ºC at 760 mmHg Melting Point:278-288ºC	850568-45-5
1,3-dichlorotetraisopropyldisiloxane	C₁₂H₂₈Cl₂OSi₂	Molecular Weight:315.427 Density:1.0±0.1 g/cm3 Boiling Point:262.1±0.0 °C at 760 mmHg Melting Point:N/A	69304-37-6
Propanedinitrile,2,2-dichloro-	C₃Cl₂N₂	Molecular Weight:134.95200 Density:1.312 g/mL at 25 °C(lit.) Boiling Point:97 °C(lit.) Melting Point:N/A	13063-43-9
2-(4-morpholinophenyl)ethanol	C₁₂H₁₇NO₂	Molecular Weight:207.26900 Density:1.132g/cm3 Boiling Point:382.6ºC at 760 mmHg Melting Point:N/A	105004-54-4
4-Amino-1-benzylpiperidine	C₁₂H₁₈N₂	Molecular Weight:190.285 Density:1.0±0.1 g/cm3 Boiling Point:281.2±33.0 °C at 760 mmHg Melting Point:90-93ºC	50541-93-0
n-(3-acetylphenyl)-n-methylacetamide	C₁₁H₁₃NO₂	Molecular Weight:191.22600 Density:1.108g/cm3 Boiling Point:330.7ºC at 760mmHg Melting Point:N/A	325715-13-7
4-(4-HYDROXY-3-METHOXYPHENYL)BUTAN-2-ONE OXIME	C₁₁H₁₅NO₃	Molecular Weight:209.24200 Density:N/A Boiling Point:N/A Melting Point:82-84 â„ƒ	170467-02-4
1-[2,6-DINITRO-4-(TRIFLUOROMETHYL)PHENYL]PIPERAZINE	C₁₁H₁₁F₃N₄O₄	Molecular Weight:320.22500 Density:1.489 g/cm3 Boiling Point:409.4ºC at 760 mmHg Melting Point:128-130ºC	36317-84-7
3,6,9-trioxaundecamethylene bis(2-ethylhexanoate)	C₂₇H₄₆O₇	Molecular Weight:482.65000 Density:0.989 g/cm3 Boiling Point:499.1ºC at 760 mmHg Melting Point:N/A	18268-70-7
2-Bromo-6-(trifluoromethyl)pyridin-3-amine	C₆H₄BrF₃N₂	Molecular Weight:241.009 Density:1.8±0.1 g/cm3 Boiling Point:255.5±40.0 °C at 760 mmHg Melting Point:N/A	117519-16-1
3-Amino-6-trifluoromethyl-pyridin-2-ol	C₆H₅F₃N₂O	Molecular Weight:178.11200 Density:1.457g/cm3 Boiling Point:259.1ºC at 760 mmHg Melting Point:N/A	944904-43-2
3-Amino-4-deoxy-4-imino Rifamycin S	C₃₇H₄₇N₃O₁₁	Molecular Weight:709.78300 Density:N/A Boiling Point:N/A Melting Point:N/A	62041-01-4
7-Hydroxy-4-(trifluoromethyl)coumarin	C₁₀H₅F₃O₃	Molecular Weight:230.140 Density:1.6±0.1 g/cm3 Boiling Point:311.4±42.0 °C at 760 mmHg Melting Point:178-180 °C(lit.)	575-03-1
4-Morpholinoaniline	C₁₀H₁₄N₂O	Molecular Weight:178.23 Density:1.1±0.1 g/cm3 Boiling Point:368.0±37.0 °C at 760 mmHg Melting Point:132-135 °C(lit.)	2524-67-6
(2E)-3-(4-Chloro-3-nitrophenyl)acrylic acid	C₉H₆ClNO₄	Molecular Weight:227.601 Density:1.5±0.1 g/cm3 Boiling Point:408.6±35.0 °C at 760 mmHg Melting Point:188-190 °C(lit.)	20797-48-2
5-(4-Chlorophenyl)-2-(trifluoromethyl)furan-3-carboxylic acid	C₁₂H₆ClF₃O₃	Molecular Weight:290.62200 Density:1.486g/cm3 Boiling Point:400.6ºC at 760mmHg Melting Point:188-190°C	175276-60-5
2-Bromo-1-(chloromethyl)-4-(trifluoromethyl)benzene	C₈H₅BrClF₃	Molecular Weight:273.47800 Density:N/A Boiling Point:N/A Melting Point:N/A	480438-96-8
1,1-DIFLUOROACETONE	C₃H₄F₂O	Molecular Weight:94.06010 Density:1.088 g/cm3 Boiling Point:45.3ºC at 760 mmHg Melting Point:N/A	431-05-0
(6-bromopyridin-2-yl)hydrazine	C₅H₆BrN₃	Molecular Weight:188.025 Density:1.8±0.1 g/cm3 Boiling Point:330.2±27.0 °C at 760 mmHg Melting Point:117-118℃	26944-71-8
1-Fluoro-3,5-bis(trifluoromethyl)benzene	C₈H₃F₇	Molecular Weight:232.098 Density:1.4±0.1 g/cm3 Boiling Point:99.8±35.0 °C at 760 mmHg Melting Point:N/A	35564-19-3
3,4-DIHYDRO-2,2-DIOXO-7-METHOXYCARBONYL-1-METHYLBENZO[2,1-C]THIAZIN-4-ONE	C₁₁H₁₁NO₅S	Molecular Weight:269.27400 Density:1.43g/cm3 Boiling Point:466ºC at 760mmHg Melting Point:N/A	175202-91-2
1-[4-(4-Morpholinyl)phenyl]methanamine	C₁₁H₁₆N₂O	Molecular Weight:192.258 Density:1.1±0.1 g/cm3 Boiling Point:361.4±42.0 °C at 760 mmHg Melting Point:44ºC	214759-74-7
2-(trifluoromethoxy)benzamide	C₈H₆F₃NO₂	Molecular Weight:205.13400 Density:1.381g/cm3 Boiling Point:241.8ºC at 760 mmHg Melting Point:153 °C	127979-74-2
3-(2-oxo-2,3-dihydro-1,3-benzoxazol-3-yl)propanoic acid	C₁₀H₉NO₄	Molecular Weight:207.18300 Density:1.42g/cm3 Boiling Point:403ºC at 760mmHg Melting Point:124-126ºC	13610-59-8
2-(6-CHLORO-1H-INDAZOL-3-YL)ACETIC ACID	C₉H₇ClN₂O₂	Molecular Weight:210.61700 Density:1.566g/cm3 Boiling Point:463.9ºC at 760 mmHg Melting Point:N/A	35715-85-6
3-Chlorpyrazin-2-carbonitril	C₅H₂ClN₃	Molecular Weight:139.542 Density:1.4±0.1 g/cm3 Boiling Point:264.1±35.0 °C at 760 mmHg Melting Point:45-47°C	55557-52-3
(r)-(-)-n-methyl-1-phenyl-2-(1-pyrrolidino)ethylamine	C₁₃H₂₀N₂	Molecular Weight:204.31100 Density:0,974 g/cm3 Boiling Point:296.1ºC at 760mmHg Melting Point:N/A	136329-39-0
2,2'-BITHIOPHENE-5-CARBOXALDEHYDE	C₉H₆OS₂	Molecular Weight:194.27300 Density:1.336g/cm3 Boiling Point:210 °C / 18mmHg Melting Point:55-58 °C(lit.)	3779-27-9
ISOXAZOLE-5-CARBOTHIOAMIDE	C₄H₄N₂OS	Molecular Weight:128.15200 Density:1.392g/cm3 Boiling Point:287.2ºC at 760 mmHg Melting Point:N/A	175334-72-2
Diethyl squarate	C₈H₁₀O₄	Molecular Weight:170.163 Density:1.2±0.1 g/cm3 Boiling Point:325.7±0.0 °C at 760 mmHg Melting Point:19 °C	5231-87-8
1,4,7,10-Tetraoxa-13-azacyclopentadecane	C₁₀H₂₁NO₄	Molecular Weight:219.278 Density:1.0±0.1 g/cm3 Boiling Point:347.0±32.0 °C at 760 mmHg Melting Point:35-37 °C(lit.)	66943-05-3
(5-pyridin-3-yloxypyridin-3-yl)boronic acid	C₁₀H₉BN₂O₃	Molecular Weight:216.00100 Density:1.35 g/cm3 Boiling Point:451.1ºC at 760 mmHg Melting Point:N/A	918138-36-0
5,6,7,7a-Tetrahydrothieno[3,2-c]pyridin-2(4H)-one 4-methylbenzenesulfonate	C₁₄H₁₇NO₄S₂	Molecular Weight:327.41900 Density:N/A Boiling Point:593.1ºC at 760 mmHg Melting Point:N/A	952340-39-5
5,6,7,8-tetrahydroquinoxalin-5-amine	C₈H₁₁N₃	Molecular Weight:149.19300 Density:1.145g/cm3 Boiling Point:269.535ºC at 760 mmHg Melting Point:N/A	502612-46-6
2-(6-Methyl-2-pyridinyl)ethanol	C₈H₁₁NO	Molecular Weight:137.179 Density:1.1±0.1 g/cm3 Boiling Point:226.3±25.0 °C at 760 mmHg Melting Point:56 °C	934-78-1
1-(3,4-Dimethylphenyl)piperazine	C₁₂H₁₈N₂	Molecular Weight:190.285 Density:1.0±0.1 g/cm3 Boiling Point:339.0±42.0 °C at 760 mmHg Melting Point:60-65°C	1014-05-7
2',5-DICHLORO-2-HYDROXYBENZOPHENONE	C₁₃H₈Cl₂O₂	Molecular Weight:267.10700 Density:1.406 g/cm3 Boiling Point:388.9ºCat 760 mmHg Melting Point:107-110ºC(lit.)	61785-35-1
2-Chloro-4-(trifluoromethyl)pyrimidine	C₅H₂ClF₃N₂	Molecular Weight:182.531 Density:1.5±0.1 g/cm3 Boiling Point:222.1±35.0 °C at 760 mmHg Melting Point:N/A	33034-67-2
(R)-1-Boc-2-cyanopyrrolidine	C₁₀H₁₆N₂O₂	Molecular Weight:196.246 Density:1.1±0.1 g/cm3 Boiling Point:307.9±35.0 °C at 760 mmHg Melting Point:33-36ºC(lit.)	144688-70-0
3-Methoxybenzonitrile	C₈H₇NO	Molecular Weight:133.147 Density:1.1±0.1 g/cm3 Boiling Point:233.2±0.0 °C at 760 mmHg Melting Point:20-22°C	1527-89-5
6-Chloro-1-hexyne	C₆H₉Cl	Molecular Weight:116.589 Density:0.9±0.1 g/cm3 Boiling Point:146.3±23.0 °C at 760 mmHg Melting Point:N/A	10297-06-0
methylcyclohexane-d14	C₇D₁₄	Molecular Weight:112.27200 Density:0.88 g/mL at 25 °C(lit.) Boiling Point:101°C Melting Point:-126°C	10120-28-2
2-Acetylaminoisonicotinic acid	C₈H₈N₂O₃	Molecular Weight:180.16100 Density:1.404g/cm3 Boiling Point:585.3ºC at 760mmHg Melting Point:286-290ºC	54221-95-3
2-(3-methoxyphenyl)acetamide	C₉H₁₁NO₂	Molecular Weight:165.18900 Density:1.123g/cm3 Boiling Point:354.2ºC at 760mmHg Melting Point:N/A	18463-71-3