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 |
| MAGNESIUM METHOXIDE |
C2H6MgO2 |
Molecular Weight:86.37280
Density:0.816 g/mL at 25 °C
Boiling Point:48.1ºC at 760mmHg
Melting Point:N/A |
109-88-6 |
| VANADIUM(II) CHLORIDE |
Cl2V |
Molecular Weight:121.84700
Density:3.09 g/mL at 25 °C(lit.)
Boiling Point:910°C
Melting Point:910ºC |
10580-52-6 |
| antimony(iii) ethoxide |
C6H15O3Sb |
Molecular Weight:256.94100
Density:1.513 g/mL at 25 °C(lit.)
Boiling Point:95°C 11mm
Melting Point:N/A |
10433-06-4 |
| 2-Fluoro-6-iodobenzoic acid |
C7H4FIO2 |
Molecular Weight:266.008
Density:2.1±0.1 g/cm3
Boiling Point:301.6±27.0 °C at 760 mmHg
Melting Point:123-126 °C(lit.) |
111771-08-5 |
| Lanthanum Sulfide |
La2S3 |
Molecular Weight:374.00600
Density:4.91
Boiling Point:N/A
Melting Point:2100-2150ºC |
12031-49-1 |
| Cadmium arsenide |
As2Cd3H2 |
Molecular Weight:489.09200
Density:N/A
Boiling Point:N/A
Melting Point:721℃ |
12006-15-4 |
| Boron carbide |
CB4 |
Molecular Weight:55.25
Density:2.51 g/mL at 25 °C(lit.)
Boiling Point:3500°C
Melting Point:2450°C |
12069-32-8 |
| copper indium selenide |
CuHInSe2 |
Molecular Weight:337.29200
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
12018-95-0 |
| Gallium (II) Sulfide |
GaH2S |
Molecular Weight:103.80400
Density:3.860
Boiling Point:N/A
Melting Point:965ºC |
12024-10-1 |
| Indium nitrate hydrate |
H2InN3O10 |
Molecular Weight:318.84800
Density:N/A
Boiling Point:83ºC at 760mmHg
Melting Point:N/A |
13465-14-0 |
| copper(ii) nitrate, hydrate |
CuH12N2O12 |
Molecular Weight:295.64700
Density:2.070
Boiling Point:N/A
Melting Point:N/A |
13478-38-1 |
| 4-Chloro-2,5-difluorobenzoic acid |
C7H3ClF2O2 |
Molecular Weight:192.547
Density:1.6±0.1 g/cm3
Boiling Point:277.5±35.0 °C at 760 mmHg
Melting Point:154-157 °C(lit.) |
132794-07-1 |
| samarium sulfate |
H16O20S3Sm2 |
Molecular Weight:733.03000
Density:2.93 g/mL at 25 °C(lit.)
Boiling Point:330ºC at 760mmHg
Melting Point:450°C -8H₂O |
13465-58-2 |
| dibismuth molybdenum hexaoxide |
Bi2MoO6 |
Molecular Weight:609.91700
Density:9.320
Boiling Point:N/A
Melting Point:N/A |
13565-96-3 |
| thulium chloride |
Cl3Tm |
Molecular Weight:275.29300
Density:3.98 g/cm3
Boiling Point:1490ºC
Melting Point:821 °C |
13537-18-3 |
| Lead Antimonide |
PbSb |
Molecular Weight:328.96000
Density:6.72
Boiling Point:N/A
Melting Point:N/A |
12266-38-5 |
| Lutetium sulfate hydrate (2:3:1) |
H2Lu2O13S3 |
Molecular Weight:656.137
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
13473-77-3 |
| Neodymium(III) sulfate octahydrate |
Nd2O12S3 |
Molecular Weight:576.66800
Density:N/A
Boiling Point:N/A
Melting Point:1176ºC |
13477-91-3 |
| gallium arsenide |
GaAs |
Molecular Weight:144.64
Density:5.31 g/mL at 25 °C(lit.)
Boiling Point:N/A
Melting Point:1238°C |
1303-00-0 |
| germanium(ii) iodide |
GeH2I2 |
Molecular Weight:328.46500
Density:5.37 g/mL at 25 °C(lit.)
Boiling Point:545°C
Melting Point:460°C |
13573-08-5 |
| Rhodium(3+) nitrate hydrate (1:3:2) |
H4N3O11Rh |
Molecular Weight:324.951
Density:1.419
Boiling Point:53 °C
Melting Point:N/A |
13465-43-5 |
| Lithium thiocyanate hydrate |
CH2LiNOS |
Molecular Weight:83.03870
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
123333-85-7 |
| 1-BOC-3-PHENYLPIPERIDIN-4-ONE |
C16H21NO3 |
Molecular Weight:275.34300
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
632352-56-8 |
| 3-Amino-4-bromopyrazole |
C3H4BrN3 |
Molecular Weight:161.99
Density:2.0±0.1 g/cm3
Boiling Point:346.6±22.0 °C at 760 mmHg
Melting Point:133-135°C |
16461-94-2 |
| Dimethyl 3-hydroxypentanedioate |
C7H12O5 |
Molecular Weight:176.167
Density:1.2±0.1 g/cm3
Boiling Point:265.6±20.0 °C at 760 mmHg
Melting Point:N/A |
7250-55-7 |
| 3,5-Dimethyl-4H-1,2,4-triazole |
C4H7N3 |
Molecular Weight:97.11850
Density:1.119 g/cm3
Boiling Point:255.4ºC at 760mmHg
Melting Point:140 °C |
7343-34-2 |
| 2-[[4-(dimethylamino)phenyl]azo]-1,3-dimethyl-1H-imidazolium chloride |
C13H18ClN5 |
Molecular Weight:279.76900
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
77061-58-6 |
| 2-(4-Boc-piperazinyl)-α-(2,3-dimethoxy-phenyl)acetic acid |
C19H28N2O6 |
Molecular Weight:380.43500
Density:1.212g/cm3
Boiling Point:497.757°C at 760 mmHg
Melting Point:N/A |
885274-63-5 |
| FMoc-alpha-Methyl-L-phenylalanine |
C25H23NO4 |
Molecular Weight:401.45400
Density:1.256g/cm3
Boiling Point:621.2ºC at 760 mmHg
Melting Point:N/A |
135944-05-7 |
| 2-(4-Boc-piperazinyl)-α-(3,5-dimethoxy-phenyl)acetic acid |
C19H28N2O6 |
Molecular Weight:380.43500
Density:1.212g/cm3
Boiling Point:504.837°C at 760 mmHg
Melting Point:N/A |
885274-69-1 |
| (2S,4R)-1-(TERT-BUTOXYCARBONYL)-4-(4-(TRIFLUOROMETHYL)BENZYL)PYRROLIDINE-2-CARBOXYLIC ACID |
C18H22F3NO4 |
Molecular Weight:373.36700
Density:1.282g/cm3
Boiling Point:454.3ºC at 760 mmHg
Melting Point:N/A |
957311-17-0 |
| 2-(4-BOC-PIPERAZINYL)-2-(3-THIENYL)ACETIC ACID |
C15H22N2O4S |
Molecular Weight:326.41100
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
885274-75-9 |
| 7-fluoro-4-chromanone |
C9H7FO2 |
Molecular Weight:166.149
Density:1.3±0.1 g/cm3
Boiling Point:281.9±40.0 °C at 760 mmHg
Melting Point:46-50°C |
113209-68-0 |
| 3-(2-Ethoxycarbonyl-ethyl)-5-methyl-1H-pyrrole-2-carboxylic acid ethyl ester |
C13H19NO4 |
Molecular Weight:253.29400
Density:1.129 g/cm3
Boiling Point:386.2ºC at 760 mmHg
Melting Point:67-67.5ºC |
40515-75-1 |
| cis-3-aminocyclobutanecarboxylic acid |
C5H9NO2 |
Molecular Weight:115.13000
Density:1.267g/cm3
Boiling Point:251ºC at 760 mmHg
Melting Point:N/A |
74316-27-1 |
| 6-Acetyaminochroman-4-one |
C11H11NO3 |
Molecular Weight:205.21000
Density:1.308 g/cm3
Boiling Point:458.444ºC at 760 mmHg
Melting Point:164-166ºC |
103646-29-3 |
| 1-(Methylsulfonyl)piperazine |
C5H12N2O2S |
Molecular Weight:164.226
Density:1.3±0.1 g/cm3
Boiling Point:280.6±50.0 °C at 760 mmHg
Melting Point:99ºC |
55276-43-2 |
| 2,4-Dimethyl-3,5-dicarbethoxypyrrole |
C12H17NO4 |
Molecular Weight:239.268
Density:1.1±0.1 g/cm3
Boiling Point:372.3±37.0 °C at 760 mmHg
Melting Point:135-136 °C(lit.) |
2436-79-5 |
| 6-Nitrochroman-4-one |
C9H7NO4 |
Molecular Weight:193.156
Density:1.4±0.1 g/cm3
Boiling Point:378.7±42.0 °C at 760 mmHg
Melting Point:116-119ºC |
68043-53-8 |
| 5-Methylpyrimidine |
C5H6N2 |
Molecular Weight:94.115
Density:1.0±0.1 g/cm3
Boiling Point:153.0±0.0 °C at 760 mmHg
Melting Point:29-31°C |
2036-41-1 |
| 5-chloro-2-hydroxy-4-methyl-benzaldehyde |
C9H9ClO2 |
Molecular Weight:184.62000
Density:1.281 g/cm3
Boiling Point:272.5ºC at 760 mmHg
Melting Point:89-90℃ |
81322-67-0 |
| 7-BENZYLOXY-4-HYDROXYQUINOLINE-3-CARBOXYLIC ACID ETHYL ESTER |
C19H17NO4 |
Molecular Weight:323.34300
Density:1.248g/cm3
Boiling Point:491ºC at 760 mmHg
Melting Point:N/A |
17825-15-9 |
| 7-Nitro-3,4-dihydro-1(2H)-naphthalenone |
C10H9NO3 |
Molecular Weight:191.183
Density:1.3±0.1 g/cm3
Boiling Point:349.1±31.0 °C at 760 mmHg
Melting Point:108-109°C |
40353-34-2 |
| 3-(2-Ethoxycarbonylethyl)-2,4-dimethyl-5-formylpyrrole |
C12H17NO3 |
Molecular Weight:223.26800
Density:1.128g/cm3
Boiling Point:351.8ºC at 760mmHg
Melting Point:N/A |
21603-70-3 |
| 3-Benzyloxyaniline |
C13H13NO |
Molecular Weight:199.248
Density:1.1±0.1 g/cm3
Boiling Point:362.6±17.0 °C at 760 mmHg
Melting Point:63-67 °C(lit.) |
1484-26-0 |
| Methyl 3-amino-4-methoxybenzoate |
C9H11NO3 |
Molecular Weight:181.189
Density:1.2±0.1 g/cm3
Boiling Point:325.9±22.0 °C at 760 mmHg
Melting Point:84-86°C |
24812-90-6 |
| 4-(Methylsulfonyl)benzonitrile |
C8H7NO2S |
Molecular Weight:181.21200
Density:1.32 g/cm3
Boiling Point:385.8ºC at 760 mmHg
Melting Point:137-142 °C |
22821-76-7 |
| 5'-DMT-2'-F-Ac-dC |
C32H32FN3O7 |
Molecular Weight:589.61100
Density:1.31±0.1 g/cm3(Predicted)
Boiling Point:N/A
Melting Point:N/A |
159414-98-9 |
| 2,3,4-tri-o-acetyl-beta-d-xylopyranosyl azide |
C11H15N3O7 |
Molecular Weight:301.25300
Density:1.3759 (rough estimate)
Boiling Point:442.39°C (rough estimate)
Melting Point:84°C |
53784-33-1 |
| 3,5-dibromo-2-hydroxybenzonitrile |
C7H3Br2NO |
Molecular Weight:276.91300
Density:2.24g/cm3
Boiling Point:275.4ºC at 760 mmHg
Melting Point:N/A |
40718-08-9 |