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 |
| 3-METHYL-4-PHENYL-1H-1,2,4-TRIAZOL-5(4H)-ONE |
C9H9N3O |
Molecular Weight:175.18700
Density:1.27g/cm3
Boiling Point:409.1ºC at 760mmHg
Melting Point:153-154ºC |
1010-54-4 |
| Benzoic acid,4-(3-methylbutoxy)- |
C12H16O3 |
Molecular Weight:208.25400
Density:1.082g/cm3
Boiling Point:326.8ºC at 760mmHg
Melting Point:142-144ºC |
2910-85-2 |
| ETHYL 2-CYANO-3-[4-(TRIFLUOROMETHYL)PHENYL]ACRYLATE |
C13H10F3NO2 |
Molecular Weight:269.21900
Density:1.281g/cm3
Boiling Point:332.4ºC at 760mmHg
Melting Point:N/A |
149550-21-0 |
| 2-chloro-n-(3,4-difluorophenyl)acetamide |
C8H6ClF2NO |
Molecular Weight:205.58900
Density:1.444g/cm3
Boiling Point:327ºC at 760 mmHg
Melting Point:110-112ºC |
76778-13-7 |
| 2(1H)-Quinolinone,5-hydroxy- |
C9H7NO2 |
Molecular Weight:161.15700
Density:1.337g/cm3
Boiling Point:402.4ºC at 760mmHg
Melting Point:>300ºC |
31570-97-5 |
| ethyl 2-(2,1,3-benzothiadiazol-4-ylsulfonylamino)acetate |
C10H11N3O4S2 |
Molecular Weight:301.34200
Density:1.483g/cm3
Boiling Point:460.7ºC at 760mmHg
Melting Point:N/A |
175203-25-5 |
| 2-(4-chlorophenyl)-4-oxo-4-phenylbutanoic acid |
C16H13ClO3 |
Molecular Weight:288.72600
Density:1.3g/cm3
Boiling Point:484.6ºC at 760 mmHg
Melting Point:167-169ºC |
39206-70-7 |
| 5-AMINO-1-(3-CHLORO-4-FLUOROPHENYL)-4-CYANOPYRAZOLE |
C10H6ClFN4 |
Molecular Weight:236.63300
Density:1.453g/cm3
Boiling Point:301.2ºC at 760 mmHg
Melting Point:153-154ºC |
175135-53-2 |
| 3-(4-(4-FLUOROBENZYLOXY)PHENYL)ACRYLIC ACID |
C16H13FO3 |
Molecular Weight:272.27100
Density:1.272g/cm3
Boiling Point:452.9ºC at 760mmHg
Melting Point:208-209ºC |
175136-19-3 |
| cis-3,4-dichlorocyclobutene |
C4H4Cl2 |
Molecular Weight:122.98100
Density:1.31g/cm3
Boiling Point:142ºC at 760mmHg
Melting Point:N/A |
2957-95-1 |
| 3,4-dimethoxyphenylhydrazine hydrochloride |
C8H13ClN2O2 |
Molecular Weight:204.65400
Density:N/A
Boiling Point:290.7ºC at 760mmHg
Melting Point:162℃ (Decomposition) |
40119-17-3 |
| 1,3-BIS(2,6-DIISOPROPYLPHENYL)-1H-IMIDAZOL-3-IUM TETRAFLUOROBORATE |
C27H37BF4N2 |
Molecular Weight:476.40100
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
286014-25-3 |
| 2-AMINO-4-[2-CHLORO-5-(TRIFLUOROMETHYL)PHENYLAMINO]-1,3,5-TRIAZINE 98 |
C10H7ClF3N5 |
Molecular Weight:289.64400
Density:1.583g/cm3
Boiling Point:429.1ºC at 760mmHg
Melting Point:181-183ºC |
175204-34-9 |
| 4-hydroxy-1-phenylquinolin-2-one |
C15H11NO2 |
Molecular Weight:237.25300
Density:1.345g/cm3
Boiling Point:380.9ºC at 760mmHg
Melting Point:N/A |
14994-75-3 |
| 7-hydroxy-4-propan-2-ylchromen-2-one |
C12H12O3 |
Molecular Weight:204.22200
Density:1.232g/cm3
Boiling Point:382.4ºC at 760mmHg
Melting Point:N/A |
23251-28-7 |
| 3,4-diphenylthiophene-2,5-dicarbonitrile |
C18H10N2S |
Molecular Weight:286.35000
Density:N/A
Boiling Point:N/A
Melting Point:179ºC |
175205-73-9 |
| 3-Cyclohexyl-2-bromopropene |
C9H15Br |
Molecular Weight:203.11900
Density:1.3733 (rough estimate)
Boiling Point:221.67°C (estimate)
Melting Point:N/A |
53608-85-8 |
| 4(3H)-Pyrimidinone,6-hydroxy-2-phenyl- |
C10H8N2O2 |
Molecular Weight:188.18300
Density:1.33g/cm3
Boiling Point:292.6ºC at 760mmHg
Melting Point:N/A |
13566-71-7 |
| 5-Phenyl-1,2,4-oxadiazole-3-carboxylic acid |
C9H6N2O3 |
Molecular Weight:190.15600
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
37937-62-5 |
| 2-(1,1-Dioxo-1lambda6,4-thiazinan-4-yl)acetohydrazide |
C6H13N3O3S |
Molecular Weight:207.25100
Density:1.37g/cm3
Boiling Point:531.3ºC at 760 mmHg
Melting Point:194-195ºC |
39093-81-7 |
| 2H-Benzimidazole-2-thione,5,6-difluoro-1,3-dihydro-(9CI) |
C7H4F2N2S |
Molecular Weight:186.18200
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
123470-47-3 |
| 2-Quinoxalineacetonitrile,3-methyl-(7CI) |
C11H9N3 |
Molecular Weight:183.20900
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
91093-26-4 |
| 3-CHLORO-5-ISOXAZOLEMETHANOL |
C4H4ClNO2 |
Molecular Weight:133.53300
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
105175-03-9 |
| 6-Chloro-3,4-dihydroquinoxalin-2(1H)-one 6-Chloro-3,4-dihydroquinoxalin-2(1H)-one |
C8H7ClN2O |
Molecular Weight:182.60700
Density:1.335g/cm3
Boiling Point:386.8ºC at 760mmHg
Melting Point:N/A |
89938-22-7 |
| TERT-BUTYL 2-(TRIFLUOROMETHYL)-5,6-DIHYDRO-[1,2,4]TRIAZOLO[1,5-A]PYRAZINE-7(8H)-CARBOXYLATE |
C11H15F3N4O2 |
Molecular Weight:292.25800
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
681249-59-2 |
| 2-cyclopropyl-5,6,7,8-tetrahydro-[1,2,4]triazolo[1,5-a]pyrazine |
C8H12N4 |
Molecular Weight:164.20800
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
681249-78-5 |
| 5-(3-THIENYL)-2-PYRAZINAMINE |
C8H7N3S |
Molecular Weight:177.22600
Density:1.333g/cm3
Boiling Point:309.19ºC at 760 mmHg
Melting Point:N/A |
710323-21-0 |
| 3-phenylpyrazin-2-amine |
C10H11N3 |
Molecular Weight:173.21400
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
41270-67-1 |
| 5-Chloro-1,3-dihydro-3-(phenylmethylene)-2H-indol-2-one |
C15H10ClNO |
Molecular Weight:255.69900
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
387342-89-4 |
| 5-CHLORO-1,3-DIHYDRO-INDOLE-2-THIONE |
C8H6ClNS |
Molecular Weight:183.65800
Density:1.43g/cm3
Boiling Point:281.1ºC at 760 mmHg
Melting Point:N/A |
73424-95-0 |
| 2,5-DICHLORO-1H-INDOLE-3-CARBOXALDEHYDE |
C9H5Cl2NO |
Molecular Weight:214.04800
Density:1.557g/cm3
Boiling Point:397.5ºC at 760 mmHg
Melting Point:N/A |
535924-87-9 |
| 2-methylquinoline-6-carbonitrile |
C11H8N2 |
Molecular Weight:168.19500
Density:1.17g/cm3
Boiling Point:323.9ºC at 760 mmHg
Melting Point:172-174 °C |
73013-69-1 |
| 1-Methyl-4-(6-nitropyridin-3-yl)piperazine |
C10H14N4O2 |
Molecular Weight:222.24400
Density:1.25g/cm3
Boiling Point:399.258ºC at 760 mmHg
Melting Point:N/A |
657410-79-2 |
| 4-AMINO-2-CHLOROPYRROLO[3,2-D]PYRIMIDINE |
C6H5ClN4 |
Molecular Weight:168.58400
Density:1.644g/cm3
Boiling Point:N/A
Melting Point:N/A |
91996-89-3 |
| Furo[3,2-d]pyrimidine-2,4-diol |
C6H4N2O3 |
Molecular Weight:152.10800
Density:1.461g/cm3
Boiling Point:N/A
Melting Point:N/A |
956034-06-3 |
| 6-Methoxyquinazolin-4-amine |
C9H9N3O |
Molecular Weight:175.18700
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
885277-51-0 |
| METHYL 3-BROMO-5-METHYLISOXAZOLE-4-CARBOXYLATE |
C6H6BrNO3 |
Molecular Weight:220.02100
Density:1.62g/cm3
Boiling Point:269.013ºC at 760 mmHg
Melting Point:N/A |
188686-98-8 |
| 5-PREGNEN-16,17-EPOXY-6-METHYL-3-BETA-OL-20-ONE |
C22H32O3 |
Molecular Weight:344.48800
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
103303-35-1 |
| Chol-8(14)-en-24-oicacid, 3,12-dihydroxy-, (3a,5b,12a)- |
C24H38O4 |
Molecular Weight:390.56
Density:1.17g/cm3
Boiling Point:560.5ºC at 760 mmHg
Melting Point:175-176ºC(lit.) |
641-81-6 |
| 19-HYDROXYPROGESTERONE |
C21H30O3 |
Molecular Weight:330.46100
Density:1.15g/cm3
Boiling Point:496.5ºC at 760mmHg
Melting Point:N/A |
596-63-4 |
| 11α-Acetoxyprogesterone |
C23H32O4 |
Molecular Weight:372.498
Density:1.1±0.1 g/cm3
Boiling Point:494.3±45.0 °C at 760 mmHg
Melting Point:177 °C |
2268-98-6 |
| Cortisol 3-(O-carboxymethyl)oxime |
C23H33NO7 |
Molecular Weight:435.51100
Density:1.5±0.1 g/cm3
Boiling Point:650.3±65.0 °C at 760 mmHg
Melting Point:N/A |
43188-86-9 |
| 6-Keto Estrone |
C18H20O3 |
Molecular Weight:284.35000
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
1476-34-2 |
| 3β,5α-Dihydroxycholestan-6-one |
C27H46O3 |
Molecular Weight:418.652
Density:1.1±0.1 g/cm3
Boiling Point:528.9±45.0 °C at 760 mmHg
Melting Point:N/A |
13027-33-3 |
| Dehydroepiandrosterone sulfate sodium salt |
C19H27NaO5S |
Molecular Weight:390.469
Density:N/A
Boiling Point:N/A
Melting Point:148-149 °C (dec.)(lit.) |
1099-87-2 |
| 2-Methoxy estrone |
C19H24O3 |
Molecular Weight:300.392
Density:1.2±0.1 g/cm3
Boiling Point:463.5±45.0 °C at 760 mmHg
Melting Point:N/A |
362-08-3 |
| 5a-androstane |
C19H32 |
Molecular Weight:260.457
Density:0.9±0.1 g/cm3
Boiling Point:336.0±9.0 °C at 760 mmHg
Melting Point:78-82 °C(lit.) |
438-22-2 |
| 2-tert-Amylphenol |
C11H16O |
Molecular Weight:164.24400
Density:0.96 g/cm3
Boiling Point:234.3ºC at 760 mmHg
Melting Point:-5ºC BOLING |
3279-27-4 |
| 2-tert-Butylphenol |
C10H14O |
Molecular Weight:150.218
Density:1.0±0.1 g/cm3
Boiling Point:221.0±0.0 °C at 760 mmHg
Melting Point:−7 °C(lit.) |
88-18-6 |
| 2-SEC-4-TERT BUTYLPHENOL |
C14H22O |
Molecular Weight:206.32400
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
51390-14-8 |