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 |
| 1H-Imidazole-4-carboxaldehyde,2-(3-pyridinyl)- (9CI)
|
C9H7N3O
|
Molecular Weight:173.17100
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
279251-09-1
|
| 1H-Imidazole-4-carboxaldehyde,2-(4-pyridinyl)- (9CI)
|
C9H7N3O
|
Molecular Weight:173.17100
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
279251-10-4
|
| Pyrrolo[1,2:2,3]isothiazolo[4,5-c]isoxazole (9CI)
|
C7H4N2OS
|
Molecular Weight:164.18400
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
279258-05-8
|
| 1-Bromo-4-(2-chloroethoxy)benzene
|
C8H8BrClO
|
Molecular Weight:235.505
Density:1.5±0.1 g/cm3
Boiling Point:279.8±15.0 °C at 760 mmHg
Melting Point:N/A
|
279261-80-2
|
| 4-(4-bromo-3-fluorophenyl)morpholine
|
C10H11BrFNO
|
Molecular Weight:260.10300
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
279261-83-5
|
| ChroMan-6-ylboronic acid
|
C9H11BO3
|
Molecular Weight:177.99300
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
279261-84-6
|
| 4-(3-Methoxypropoxy)phenylboronic acid
|
C10H15BO4
|
Molecular Weight:210.03500
Density:1.13±0.1 g/cm3(Predicted)
Boiling Point:365.3±48.0 °C(Predicted)
Melting Point:N/A
|
279262-35-0
|
| buta-1,3-diene,ethyl prop-2-enoate,methyl 2-methylprop-2-enoate,styrene
|
C22H30O4
|
Molecular Weight:358.47100
Density:N/A
Boiling Point:145.2ºC at 760mmHg
Melting Point:N/A
|
27965-85-1
|
| Ammonia, urea, formaldehyde polymer
|
C2H9N3O2
|
Molecular Weight:107.11200
Density:N/A
Boiling Point:196.6ºC at 760 mmHg
Melting Point:N/A
|
27967-29-9
|
| 4,6-Pyrimidinediamine,hydrochloride (1:1)
|
C4H7ClN4
|
Molecular Weight:146.57800
Density:N/A
Boiling Point:364ºC at 760mmHg
Melting Point:N/A
|
5468-67-7
|
| 4,5,6,7-tetrahydro-1H-indene
|
C9H12
|
Molecular Weight:120.19200
Density:0.95
Boiling Point:205ºC
Melting Point:N/A
|
24279-06-9
|
| 4-Amino-2,5,6-trichloropyrimidine
|
C4H2Cl3N3
|
Molecular Weight:198.43800
Density:1.74g/cm3
Boiling Point:335.632ºC at 760 mmHg
Melting Point:N/A
|
28969-60-0
|
| 2,6-diamino-4-(3-nitrophenyl)-4H-thiopyran-3,5-dicarbonitrile
|
C13H9N5O2S
|
Molecular Weight:299.30800
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
294873-16-8
|
| 2-Benzofurancarboxamide, 3-amino-5-chloro-
|
C9H7ClN2O2
|
Molecular Weight:210.61700
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
294878-00-5
|
| butyl 2-methylprop-2-enoate,butyl prop-2-enoate,styrene
|
C23H34O4
|
Molecular Weight:374.51400
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
29497-14-1
|
| SODIUM (CARBOMETHOXY)METHANE SULFONATE
|
C3H5NaO5S
|
Molecular Weight:176.12400
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
29508-16-5
|
| diethyl(dimethyl)azanium,chloride
|
C6H16ClN
|
Molecular Weight:137.65100
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
29508-45-0
|
| 1,5-dimethyl-3-[(2-methyl-1H-indol-3-yl)azo]-2-phenyl-1H-pyrazolium methyl sulphate
|
C21H25N5O4S
|
Molecular Weight:443.51900
Density:N/A
Boiling Point:490.2ºC at 760mmHg
Melting Point:N/A
|
29508-48-3
|
| Benzenamine,2-(1H-imidazol-2-yl)-
|
C9H9N3
|
Molecular Weight:159.18800
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
29528-25-4
|
| 3-[5-(3-nitrobenzoyl)-1,3-dioxoisoindol-2-yl]benzoic acid
|
C22H12N2O7
|
Molecular Weight:416.34000
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
295348-05-9
|
| eupatolitin
|
C17H14O8
|
Molecular Weight:346.28800
Density:1.591g/cm3
Boiling Point:640ºC at 760 mmHg
Melting Point:N/A
|
29536-44-5
|
| ciclonium bromide
|
C22H34BrNO
|
Molecular Weight:408.41500
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
29546-59-6
|
| 2-(ETHYLTHIO)PHENOL
|
C8H10OS
|
Molecular Weight:154.22900
Density:1.15g/cm3
Boiling Point:234.9ºC at 760mmHg
Melting Point:N/A
|
29549-60-8
|
| (E)-N-Caffeoylputrescine
|
C13H18N2O3
|
Molecular Weight:250.294
Density:1.233±0.06 g/cm3
Boiling Point:545.5±50.0 °C at 760 mmHg
Melting Point:254.5 °C
|
29554-26-5
|
| methyl 2-methylprop-2-enoate,oxiran-2-ylmethyl 2-methylprop-2-enoate,styrene
|
C20H26O5
|
Molecular Weight:346.41700
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
29564-58-7
|
| 2-tert-butyl-3,3-dimethylbutanoyl chloride
|
C10H19ClO
|
Molecular Weight:190.71000
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
29571-65-1
|
| 2-methyl-6,7-dihydro-5H-1,3-benzoxazol-4-one
|
C8H9NO2
|
Molecular Weight:151.16300
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
201024-63-7
|
| 1H-Indazole, 1-(2-chloro-1-oxopropyl)- (9CI)
|
C10H9ClN2O
|
Molecular Weight:208.64400
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
201299-94-7
|
| ethyl N-(4-formylphenyl)carbamate
|
C10H11NO3
|
Molecular Weight:193.19900
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
20131-85-5
|
| p-Acetoacetophenetidide, 2,2''-((2,2'-dichloro-4,4'-biphenylylene)bis(azo))bis-
|
C36H34Cl2N6O6
|
Molecular Weight:717.59800
Density:1.32g/cm3
Boiling Point:839.4ºC at 760 mmHg
Melting Point:N/A
|
20139-66-6
|
| N,N-dimethyl-4-(4-oxocyclohexyl)benzamide
|
C15H19NO2
|
Molecular Weight:245.31700
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
201412-89-7
|
| 2-bromo-1-thiazol-5-yl-ethanone
|
C5H4BrNOS
|
Molecular Weight:206.060
Density:1.8±0.1 g/cm3
Boiling Point:276.5±15.0 °C at 760 mmHg
Melting Point:N/A
|
201470-17-9
|
| Furo[2,3-b]pyridine-5-carboxaldehyde (9CI)
|
C8H5NO2
|
Molecular Weight:147.13100
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
201470-89-5
|
| 4-thujanol
|
C10H18O
|
Molecular Weight:154.24900
Density:N/A
Boiling Point:N/A
Melting Point:58-62 °C
|
546-79-2
|
| MELILOTOSIDE
|
C15H18O8
|
Molecular Weight:326.29900
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
618-67-7
|
| Albasapogenin
|
C30H46O4
|
Molecular Weight:470.68
Density:1.1±0.1 g/cm3
Boiling Point:581.1±50.0 °C at 760 mmHg
Melting Point:N/A
|
639-14-5
|
| 3-Bromo-4-methoxy-5-nitropyridine
|
C6H5BrN2O3
|
Molecular Weight:233.020
Density:1.7±0.1 g/cm3
Boiling Point:300.1±37.0 °C at 760 mmHg
Melting Point:39-40℃
|
31872-76-1
|
| 2-Bromo-1,3-thiazol-4-amine hydrobromide (1:1)
|
C3H4Br2N2S
|
Molecular Weight:259.950
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
41731-35-5
|
| (D-Ala2)-Leu-Enkephalin amide
|
C29H40N6O6
|
Molecular Weight:568.66400
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
65189-64-2
|
| 3-(1H-IMIDAZOL-2-YL)-PHENYLAMINE
|
C9H9N3
|
Molecular Weight:159.18800
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
161887-05-4
|
| 1-(3-ethyl-2-methylimidazol-4-yl)ethanone
|
C8H12N2O
|
Molecular Weight:152.19400
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
403793-00-0
|
| 2-(1-Methyl-1H-imidazol-4-yl)acetic acid
|
C6H8N2O2
|
Molecular Weight:140.140
Density:1.3±0.1 g/cm3
Boiling Point:384.4±17.0 °C at 760 mmHg
Melting Point:N/A
|
2625-49-2
|
| 4-(4-Bromophenyl)-1H-imidazole
|
C9H7BrN2
|
Molecular Weight:223.06900
Density:1.565g/cm3
Boiling Point:427ºC at 760 mmHg
Melting Point:139-143ºC
|
13569-96-5
|
| 1-(2,3-DIHYDRO-1-BENZOFURAN-2-YL)METHANAMINEHYDROCHLORIDE
|
C7H10N2O
|
Molecular Weight:138.16700
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
103747-88-2
|
| 2-(1H-imidazol-2-yl)-1,3-thiazole
|
C6H5N3S
|
Molecular Weight:151.18900
Density:1.387g/cm3
Boiling Point:374.177ºC at 760 mmHg
Melting Point:N/A
|
438545-36-9
|
| 2-(2-furoyl)-4(5)-(2-furanyl)-1h-imidazole
|
C12H8N2O3
|
Molecular Weight:228.20400
Density:1.342 g/cm3
Boiling Point:455.6ºC at 760 mmHg
Melting Point:N/A
|
91037-91-1
|
| 1H-Imidazole,2-(2-phenylethenyl)-
|
C11H10N2
|
Molecular Weight:170.21000
Density:1.18g/cm3
Boiling Point:379.6ºC at 760mmHg
Melting Point:N/A
|
13682-34-3
|
| 2-CHLORO-6-(1H-IMIDAZOL-1-YL)BENZONITRILE
|
C10H6ClN3
|
Molecular Weight:203.62800
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
287176-53-8
|
| 5-fluoro-2-imidazol-1-ylaniline
|
C9H8FN3
|
Molecular Weight:177.17800
Density:1.3g/cm3
Boiling Point:343.5ºC at 760mmHg
Melting Point:127ºC
|
251649-52-2
|
| 2-chloromethyl-1-methyl-1H-imidazole
|
C5H7ClN2
|
Molecular Weight:130.576
Density:1.2±0.1 g/cm3
Boiling Point:243.7±23.0 °C at 760 mmHg
Melting Point:182-184ºC
|
19225-92-4
|