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 |
1-iodo-3-methoxy-2-(methoxymethoxy)benzene |
C9H11IO3 |
Molecular Weight:294.08600 Density:N/A Boiling Point:N/A Melting Point:N/A |
165071-94-3 |
3-BUTYL-2-(1-ETHYLPENTYL)OXAZOLIDINE |
C14H29NO |
Molecular Weight:227.38600 Density:1.04 g/mL at 25ºC(lit.) Boiling Point:180ºC(lit.) Melting Point:N/A |
165101-57-5 |
3-(2-bromoethyl)-5-methoxy-1-methylindole |
C12H14BrNO |
Molecular Weight:268.15000 Density:N/A Boiling Point:N/A Melting Point:N/A |
185558-16-1 |
DIETHYLHEXYL IPDI |
C28H54N2O4 |
Molecular Weight:482.73900 Density:N/A Boiling Point:N/A Melting Point:N/A |
185568-15-4 |
DIBUTYLHEXYL IPDI |
C32H62N2O4 |
Molecular Weight:538.84600 Density:N/A Boiling Point:N/A Melting Point:N/A |
185568-16-5 |
3,18-diethyl-1,4,5,15,16,19,22,24-octahydro-2,7,13,17-tetramethyl-1,19-dioxo-21H-biline-8,12-dipropionic acid |
C33H42N4O6 |
Molecular Weight:590.71000 Density:1.32g/cm3 Boiling Point:890.5ºC at 760 mmHg Melting Point:N/A |
1856-98-0 |
methyl 2-(3-oxobutyl)benzoate |
C12H14O3 |
Molecular Weight:206.23800 Density:N/A Boiling Point:N/A Melting Point:N/A |
185738-24-3 |
(S)-4-METHYL-5,5-DIPHENYLOXAZOLIDIN-2-ONE |
C16H15NO2 |
Molecular Weight:253.29600 Density:1.156g/cm3 Boiling Point:465ºC at 760mmHg Melting Point:263-267ºC(lit.) |
191090-29-6 |
Methyl 1-(Boc-amino)-4-oxo-cyclohexanecarboxylate |
C13H21NO5 |
Molecular Weight:271.31000 Density:N/A Boiling Point:N/A Melting Point:N/A |
191111-27-0 |
2-methyl-4,6-diphenylpyridine |
C18H15N |
Molecular Weight:245.31800 Density:N/A Boiling Point:N/A Melting Point:N/A |
1912-16-9 |
2-phenyl-1,6-naphthyridine-4-carboxylic acid |
C15H10N2O2 |
Molecular Weight:250.25200 Density:N/A Boiling Point:N/A Melting Point:N/A |
191338-99-5 |
2,1,3-benzothiadiazol-5-ylboronic acid |
C6H5BN2O2S |
Molecular Weight:179.99200 Density:N/A Boiling Point:N/A Melting Point:N/A |
191341-04-5 |
Biguanide |
C2H7N5 |
Molecular Weight:101.110 Density:1.8±0.1 g/cm3 Boiling Point:189.3±23.0 °C at 760 mmHg Melting Point:130° |
56-03-1 |
Ethyl 5-(acetyloxy)-1,2-dimethyl-1H-indole-3-carboxylate |
C15H17NO4 |
Molecular Weight:275.300 Density:1.2±0.1 g/cm3 Boiling Point:414.1±40.0 °C at 760 mmHg Melting Point:124-128ºC |
40945-79-7 |
ethyl5-acetoxy-6-bromo-2-(bromomethyl)-1-methylindole-3-. |
C15H15Br2NO4 |
Molecular Weight:433.092 Density:1.7±0.1 g/cm3 Boiling Point:529.8±50.0 °C at 760 mmHg Melting Point:179---180ºC |
110543-98-1 |
4,5-Dihydro-6-methylpyridazin-3(2H)-one |
C5H8N2O |
Molecular Weight:112.130 Density:1.2±0.1 g/cm3 Boiling Point:N/A Melting Point:102-104 ºC |
5157-08-4 |
1,2,3,4-TETRAHYDRO-1,5-NAPHTHALENEDIOL |
C10H12O2 |
Molecular Weight:164.201 Density:1.2±0.1 g/cm3 Boiling Point:325.9±37.0 °C at 760 mmHg Melting Point:132-134ºC(lit.) |
40771-26-4 |
Bis(triphenylsilyl) chromate |
C36H30CrO4Si2 |
Molecular Weight:634.788 Density:N/A Boiling Point:N/A Melting Point:159ºC(dec.)(lit.) |
1624-02-8 |
(5-NITRO-2-FUROYL)AMINO]ACETICACID |
C16H23NO3 |
Molecular Weight:277.35900 Density:1.045g/cm3 Boiling Point:421.6ºC at 760mmHg Melting Point:N/A |
116437-42-4 |
Potassium 2-hydroxy-4-methoxybenzoate |
C8H7KO4 |
Molecular Weight:206.237 Density:N/A Boiling Point:N/A Melting Point:N/A |
152312-71-5 |
2,3-Diaminobenzoic acid |
C7H8N2O2 |
Molecular Weight:152.151 Density:1.4±0.1 g/cm3 Boiling Point:382.7±32.0 °C at 760 mmHg Melting Point:198-204 °C |
603-81-6 |
Ethyl 3-methyl-2-oxobutanoate |
C7H12O3 |
Molecular Weight:144.168 Density:1.0±0.1 g/cm3 Boiling Point:174.7±0.0 °C at 760 mmHg Melting Point:N/A |
20201-24-5 |
Pyridazine N-oxide |
C4H4N2O |
Molecular Weight:96.08740 Density:1.19g/cm3 Boiling Point:210.7ºC at 760mmHg Melting Point:298-305ºC |
1457-42-7 |
1-(Dibutoxymethoxy)butane |
C13H28O3 |
Molecular Weight:232.360 Density:0.9±0.1 g/cm3 Boiling Point:262.7±20.0 °C at 760 mmHg Melting Point:N/A |
588-43-2 |
2,4,6-Tris(4-butoxy-2-hydroxyphenyl)-1,3,5-triazine |
C33H39N3O6 |
Molecular Weight:573.67900 Density:1.193±0.06 g/cm3(Predicted) Boiling Point:786.0±70.0 °C(Predicted) Melting Point:154 °C |
3135-19-1 |
phenalenone |
C13H8O |
Molecular Weight:180.202 Density:1.3±0.1 g/cm3 Boiling Point:355.2±35.0 °C at 760 mmHg Melting Point:153-156ºC(lit.) |
548-39-0 |
1-(2-BROMOETHOXY)-3-ETHYLBENZENE |
C9H11BrO2 |
Molecular Weight:231.08600 Density:1.382 g/cm3 Boiling Point:140-142ºC (10 mmHg) ,291.7ºC at 760 mmHg Melting Point:46-50ºC |
22921-76-2 |
1-Methylimidazole-4-carboxaldehyde |
C5H6N2O |
Molecular Weight:110.114 Density:1.1±0.1 g/cm3 Boiling Point:300.1±15.0 °C at 760 mmHg Melting Point:N/A |
17289-26-8 |
2,3-Dibromo-5-benzoylpyrrole |
C11H7Br2NO |
Molecular Weight:328.98700 Density:1.845 Boiling Point:430.963ºC at 760 mmHg Melting Point:N/A |
50372-61-7 |
Methyl 3,4-dimethoxybenzoate |
C10H12O4 |
Molecular Weight:196.200 Density:1.1±0.1 g/cm3 Boiling Point:284.1±20.0 °C at 760 mmHg Melting Point:59-62 °C(lit.) |
2150-38-1 |
2,5-Bis(trifluoromethyl)benzyl alcohol |
C9H6F6O |
Molecular Weight:244.134 Density:1.4±0.1 g/cm3 Boiling Point:196.3±35.0 °C at 760 mmHg Melting Point:34-36 °C(lit.) |
302911-97-3 |
2,5-Bis(trifluoromethyl)benzonitrile |
C9H3F6N |
Molecular Weight:239.117 Density:1.5±0.1 g/cm3 Boiling Point:214.5±35.0 °C at 760 mmHg Melting Point:N/A |
51012-27-2 |
2-Fluoro-3-methoxybenzaldehyde |
C8H7FO2 |
Molecular Weight:154.138 Density:1.2±0.1 g/cm3 Boiling Point:239.9±20.0 °C at 760 mmHg Melting Point:47-51 °C(lit.) |
103438-88-6 |
2-Fluoro-5-methylbenzoic acid |
C8H7FO2 |
Molecular Weight:154.138 Density:1.3±0.1 g/cm3 Boiling Point:259.2±20.0 °C at 760 mmHg Melting Point:160-162 °C(lit.) |
321-12-0 |
2,4-bis(trifluoromethyl)benzonitrile |
C9H3F6N |
Molecular Weight:239.11700 Density:1.45g/cm3 Boiling Point:195.8ºC at 760mmHg Melting Point:160°C (dec.) |
177952-38-4 |
2-fluoro-3-methoxybenzoyl chloride |
C8H6ClFO2 |
Molecular Weight:188.58300 Density:1.309g/cm3 Boiling Point:133/12mm Melting Point:49-51ºC |
850563-45-0 |
2-Fluoro-3-methoxybenzoic acid |
C8H7FO3 |
Molecular Weight:170.138 Density:1.3±0.1 g/cm3 Boiling Point:296.6±20.0 °C at 760 mmHg Melting Point:157-160ºC |
137654-20-7 |
2,5-Bis(trifluoromethyl)benzaldehyde |
C9H4F6O |
Molecular Weight:242.118 Density:1.4±0.1 g/cm3 Boiling Point:200.9±40.0 °C at 760 mmHg Melting Point:N/A |
395-64-2 |
2,5-Bis(trifluoromethyl)benzoyl chloride |
C9H3ClF6O |
Molecular Weight:276.56300 Density:1.528 g/mL at 25 °C(lit.) Boiling Point:185 Melting Point:N/A |
393-82-8 |
1,3-Difluoro-5-iodobenzene |
C6H3F2I |
Molecular Weight:239.989 Density:2.0±0.1 g/cm3 Boiling Point:173.9±20.0 °C at 760 mmHg Melting Point:N/A |
2265-91-0 |
Benzo[d][1,3]dioxole-4-carboxylic acid |
C8H6O4 |
Molecular Weight:166.131 Density:1.5±0.1 g/cm3 Boiling Point:318.3±31.0 °C at 760 mmHg Melting Point:224ºC |
5768-39-8 |
Potassium perruthenate(VII) |
KO4Ru |
Molecular Weight:204.16600 Density:N/A Boiling Point:N/A Melting Point:44ºC |
10378-50-4 |
Manganese(II) bromide hydrate |
Br2H8MnO4 |
Molecular Weight:286.80700 Density:N/A Boiling Point:N/A Melting Point:64,3°C (dec.) |
10031-20-6 |
Europium(Iii) Nitrate Hydrate |
EuH10N3O14 |
Molecular Weight:428.05500 Density:N/A Boiling Point:83ºC at 760mmHg Melting Point:85ºC |
100587-95-9 |
1,4-Difluoro-2-iodobenzene |
C6H3F2I |
Molecular Weight:239.989 Density:2.0±0.1 g/cm3 Boiling Point:186.2±20.0 °C at 760 mmHg Melting Point:N/A |
2265-92-1 |
sodium thiophosphate |
Na3O3PS |
Molecular Weight:180.00600 Density:2.149g/cm3 Boiling Point:N/A Melting Point:56-58ºC |
10101-88-9 |
Terbium(III) acetate hexahydrate |
C6H11O7Tb |
Molecular Weight:354.07300 Density:2.63 g/mL at 25 °C(lit.) Boiling Point:N/A Melting Point:1195°C |
100587-92-6 |
ytterbium sulfate |
H16O20S3Yb2 |
Molecular Weight:778.41800 Density:3,286 g/cm3 Boiling Point:N/A Melting Point:900°C |
10034-98-7 |
praseodymium chloride heptahydrate |
CH15Cl3O7 |
Molecular Weight:245.48500 Density:2.25 g/cm3 Boiling Point:N/A Melting Point:115ºC |
10025-90-8 |
Nitric acid,lutetium(3+) salt (3:1) |
H8LuN3O13 |
Molecular Weight:433.04300 Density:N/A Boiling Point:83ºC at 760 mmHg Melting Point:N/A |
10099-67-9 |