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 |
2,1,3-Benzoxadiazole-4-carbaldehyde |
C7H4N2O2 |
Molecular Weight:148.119 Density:1.4±0.1 g/cm3 Boiling Point:277.3±32.0 °C at 760 mmHg Melting Point:100-102°C |
32863-32-4 |
Thiosemicarbazide Hydrochloride |
CH6ClN3S |
Molecular Weight:127.59600 Density:1.376g/cm3 Boiling Point:227 °C (35 mmHg) Melting Point:58-60 °C(lit.) |
4346-94-5 |
Benzoic acid, 3-cyano-4-ethoxy-, methyl ester (9CI) |
C11H11NO3 |
Molecular Weight:205.21000 Density:1.17 g/cm3 Boiling Point:351.3ºC at 760 mmHg Melting Point:N/A |
318528-53-9 |
(R)-1-(2,6-Dichloro-3-fluorophenyl)ethanol |
C8H7Cl2FO |
Molecular Weight:209.045 Density:1.4±0.1 g/cm3 Boiling Point:261.3±35.0 °C at 760 mmHg Melting Point:41.0 to 45.0 °C |
330156-50-8 |
(S)-BENZYL 2,6-DIOXOHEXAHYDROPYRIMIDINE-4-CARBOXYLATE |
C12H12N2O4 |
Molecular Weight:248.23500 Density:N/A Boiling Point:N/A Melting Point:N/A |
103300-84-1 |
2-(4-methylpiperazin-1-yl)-5-nitroaniline |
C11H16N4O2 |
Molecular Weight:236.27000 Density:1.264g/cm3 Boiling Point:430.956ºC at 760 mmHg Melting Point:N/A |
5367-66-8 |
Crizotinib (PF-02341066) |
C21H22Cl2FN5O |
Molecular Weight:450.337 Density:1.5±0.1 g/cm3 Boiling Point:599.2±50.0 °C at 760 mmHg Melting Point:N/A |
877399-52-5 |
4-benzyloxy-6-chloropyrimidine |
C11H9ClN2O |
Molecular Weight:220.65500 Density:1.279g/cm3 Boiling Point:354.317ºC at 760 mmHg Melting Point:N/A |
405930-65-6 |
5-Methyl-6-(morpholin-4-yl)pyridine-3-boronic acid pinacol ester |
C16H25BN2O3 |
Molecular Weight:304.19200 Density:1.11g/cm3 Boiling Point:458.2ºC at 760 mmHg Melting Point:N/A |
1073372-03-8 |
2-Bromo-5-iodo-4-picoline |
C6H5BrIN |
Molecular Weight:297.919 Density:2.2±0.1 g/cm3 Boiling Point:300.8±37.0 °C at 760 mmHg Melting Point:50-52°C |
942206-07-7 |
(3aS,4S,6S,7aR)-2-Butyl-3a,5,5-trimethylhexahydro-4,6-methanobenzo[d][1,3,2]dioxaborole |
C14H25BO2 |
Molecular Weight:236.15800 Density:0.982g/cm3 Boiling Point:277.13ºC at 760 mmHg Melting Point:N/A |
85167-10-8 |
2-chloro-4-(5-chloropyridin-2-yl)pyridine |
C10H6Cl2N2 |
Molecular Weight:225.07400 Density:1.363g/cm3 Boiling Point:333.8ºC at 760 mmHg Melting Point:N/A |
942206-21-5 |
2-bromo-5-(6-bromopyridin-2-yl)pyridine |
C10H6Br2N2 |
Molecular Weight:313.97600 Density:1.809g/cm3 Boiling Point:389.8ºC at 760mmHg Melting Point:N/A |
942206-17-9 |
2-bromo-5-(6-chloropyridin-3-yl)pyridine |
C10H6BrClN2 |
Molecular Weight:269.52500 Density:1.591g/cm3 Boiling Point:389.2ºC at 760 mmHg Melting Point:N/A |
942206-04-4 |
6"-Chloro-3,2':5',3"-terpyridine |
C15H10ClN3 |
Molecular Weight:267.71300 Density:1.265g/cm3 Boiling Point:478.7ºC at 760 mmHg Melting Point:N/A |
942206-13-5 |
2-bromo-5-(6-bromopyridin-3-yl)pyridine |
C10H6Br2N2 |
Molecular Weight:313.97600 Density:1.809g/cm3 Boiling Point:411ºC at 760mmHg Melting Point:N/A |
147496-14-8 |
3-Bromobenzene-1,2-diol |
C6H5BrO2 |
Molecular Weight:189.007 Density:1.8±0.1 g/cm3 Boiling Point:242.6±20.0 °C at 760 mmHg Melting Point:40-41℃ |
14381-51-2 |
4-cyano-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)pyridine |
C12H15BN2O2 |
Molecular Weight:230.07100 Density:1.1g/cm3 Boiling Point:365.5ºC at 760 mmHg Melting Point:84-88℃ |
878194-91-3 |
3-Bromopyridine-4-boronic acid pinacol ester |
C11H15BBrNO2 |
Molecular Weight:283.95700 Density:1.34g/cm3 Boiling Point:340.6ºC at 760 mmHg Melting Point:88-90ºC |
458532-92-8 |
2-Benzyloxypyridine-3-boronic acid pinacol ester |
C18H22BNO3 |
Molecular Weight:311.18300 Density:1.11g/cm3 Boiling Point:436.4ºC at 760 mmHg Melting Point:N/A |
1073371-81-9 |
3-Bromo-6-chloro-2-fluoropyridine |
C5H2BrClFN |
Molecular Weight:210.432 Density:1.8±0.1 g/cm3 Boiling Point:212.0±35.0 °C at 760 mmHg Melting Point:N/A |
885952-18-1 |
2,6-Difluoropyridine-3-boronic acid pinacol ester |
C11H14BF2NO2 |
Molecular Weight:241.04200 Density:1.16g/cm3 Boiling Point:307.8ºC at 760 mmHg Melting Point:50-53°C |
1072945-00-6 |
2,2'-DICHLORO-3,3'-BIPYRIDINE |
C10H6Cl2N2 |
Molecular Weight:225.07400 Density:1.363g/cm3 Boiling Point:333.3ºC at 760mmHg Melting Point:N/A |
97033-27-7 |
4,6-Dibromopyrimidine |
C4H2Br2N2 |
Molecular Weight:237.880 Density:2.2±0.1 g/cm3 Boiling Point:263.7±20.0 °C at 760 mmHg Melting Point:49-52℃ |
36847-10-6 |
2-Bromo-3,5-diiodopyridine |
C5H2BrI2N |
Molecular Weight:409.789 Density:2.9±0.1 g/cm3 Boiling Point:371.3±37.0 °C at 760 mmHg Melting Point:N/A |
885952-14-7 |
6-Benzyloxy-pyridin-3-ol |
C12H11NO2 |
Molecular Weight:201.221 Density:1.2±0.1 g/cm3 Boiling Point:430.1±30.0 °C at 760 mmHg Melting Point:70-72ºC |
885952-26-1 |
6-Bromo-2'-chloro-2,3'-bipyridine |
C10H6BrClN2 |
Molecular Weight:269.52500 Density:1.591g/cm3 Boiling Point:351.5ºC at 760 mmHg Melting Point:N/A |
942206-02-2 |
1,3-bis(3-dimethylamino)propyl)urea |
C11H26N4O |
Molecular Weight:230.350 Density:1.0±0.1 g/cm3 Boiling Point:377.8±27.0 °C at 760 mmHg Melting Point:N/A |
52338-87-1 |
2-Nitrocumene |
C9H11NO2 |
Molecular Weight:165.189 Density:1.1±0.1 g/cm3 Boiling Point:256.4±9.0 °C at 760 mmHg Melting Point:N/A |
6526-72-3 |
3,4-diethylpyridine |
C9H13N |
Molecular Weight:135.20600 Density:0.911g/cm3 Boiling Point:205.5ºC at 760 mmHg Melting Point:N/A |
612-11-3 |
N,N-DIBUTYL-2-ETHYLHEXYLAMINE |
C16H35N |
Molecular Weight:241.45600 Density:0.804g/cm3 Boiling Point:272ºC at 760mmHg Melting Point:N/A |
18240-51-2 |
Lithium azide |
LiN3 |
Molecular Weight:48.96110 Density:1.088 g/mL at 25 °C Boiling Point:103 °C Melting Point:decomposes at 115–298℃ [CRC10] |
19597-69-4 |
4-hydroxy-7-methoxycoumarin |
C10H8O4 |
Molecular Weight:192.16800 Density:1.412 g/cm3 Boiling Point:345.6ºC at 760 mmHg Melting Point:263-265ºC |
17575-15-4 |
Diphenamid |
C16H17NO |
Molecular Weight:239.31200 Density:1.07 g/cm3 Boiling Point:382.4ºC Melting Point:132-136 °C(lit.) |
957-51-7 |
Potassium antimonyl tartrate sesquihydrate |
C8H4O12Sb2.3H2O.2K |
Molecular Weight:667.87 Density:2,607 g/cm3 Boiling Point:N/A Melting Point:332-335 ºC |
28300-74-5 |
Poly(diallyldimethylammonium chloride) |
(C8H16ClN)n |
Molecular Weight: Density:1.04 (20% aq.) Boiling Point:100ºC Melting Point:N/A |
26062-79-3 |
Tris(2-butoxyethyl) phosphate |
C18H39O7P |
Molecular Weight:398.472 Density:1.0±0.1 g/cm3 Boiling Point:413.9±0.0 °C at 760 mmHg Melting Point:-70°C |
78-51-3 |
henicosa-8,10-diynoic acid |
C21H34O2 |
Molecular Weight:318.49300 Density:0.946g/cm3 Boiling Point:474.6ºC at 760 mmHg Melting Point:51ºC |
174063-95-7 |
7-Hydroxy-4-methylcoumarin-3-acetic acid |
C12H10O5 |
Molecular Weight:234.205 Density:1.4±0.1 g/cm3 Boiling Point:512.9±50.0 °C at 760 mmHg Melting Point:263-267ºC |
5852-10-8 |
Tetrabutylammonium cyanoborohydride |
C17H38BN2 |
Molecular Weight:281.30800 Density:N/A Boiling Point:N/A Melting Point:143-147ºC |
43064-96-6 |
N,N-Dimethyl-N-octadecyloctadecan-1-aminium chloride |
C38H80ClN |
Molecular Weight:586.502 Density:N/A Boiling Point:100ºC Melting Point:149.4 - 151ºC |
107-64-2 |
allenyltributyltin |
C15H30Sn |
Molecular Weight:329.10000 Density:1.107 Boiling Point:319.9ºC at 760mmHg Melting Point:N/A |
53915-69-8 |
Acetohexamide |
C15H20N2O4S |
Molecular Weight:324.39500 Density:1.3g/cm3 Boiling Point:N/A Melting Point:188-190° (GB 912789); mp 175-177° (Marshall) |
968-81-0 |
dimethylsilyl (t-butylamido)(cyclopentadienyl) titanium dichloride |
C11H19Cl2NSiTi |
Molecular Weight:312.13400 Density:N/A Boiling Point:N/A Melting Point:N/A |
135539-57-0 |
TYCOR (TM) |
C9H16N4OS |
Molecular Weight:228.31500 Density:1.27g/cm3 Boiling Point:327.5ºC at 760 mmHg Melting Point:N/A |
64529-56-2 |
[2-(methacryloyloxy)ethyl]trimethylammonium methyl sulphate |
C10H21NO6S |
Molecular Weight:283.34200 Density:1.183 g/mL at 25ºC Boiling Point:N/A Melting Point:85 °C |
6891-44-7 |
1-(2,4,6-Trichlorophenyl)-3-[3-(2,4-di-tert-pentylphenoxy)acetamidobenzamido]-4-(4-methoxyphenyl)azo-2-pyrazolin-5-one |
C41H43Cl3N6O5 |
Molecular Weight:806.17600 Density:1.3g/cm3 Boiling Point:N/A Melting Point:N/A |
55664-78-3 |
4-Ethynylaniline |
C8H7N |
Molecular Weight:117.15 Density:1.1±0.1 g/cm3 Boiling Point:223.7±23.0 °C at 760 mmHg Melting Point:98-102 °C (dec.)(lit.) |
14235-81-5 |
molybdenum(v) chloride |
Cl5Mo |
Molecular Weight:273.22500 Density:2.928 g/mL at 25 °C(lit.) Boiling Point:268 °C(lit.) Melting Point:194 °C(lit.) |
10241-05-1 |
(Z)-11-TETRADECEN-1-YL ACETATE |
C16H30O2 |
Molecular Weight:254.40800 Density:0.878 g/cm3 Boiling Point:316.2ºC at 760 mmHg Melting Point:N/A |
20711-10-8 |