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 |
| 2,2-dideuteriopropane |
C3H6D2 |
Molecular Weight:46.10790
Density:1.5 (vs air)
Boiling Point:-42.1ºC(lit.)
Melting Point:-188ºC(lit.) |
2875-95-8 |
| 1,1,1,3,3,3-hexadeuteriopropane |
C3H2D6 |
Molecular Weight:50.13260
Density:0.642g/cm3
Boiling Point:-42.1ºC(lit.)
Melting Point:-188ºC(lit.) |
2875-96-9 |
| (2H18)Decahydronaphthalene |
C10D18 |
Molecular Weight:156.361
Density:0.9±0.1 g/cm3
Boiling Point:190.9±7.0 °C at 760 mmHg
Melting Point:-32ºC |
28788-42-3 |
| 2-Piperazinemethanol |
C5H12N2O |
Molecular Weight:116.16200
Density:0.992g/cm3
Boiling Point:234.479ºC at 760 mmHg
Melting Point:N/A |
28795-50-8 |
| Pirenzepine |
C19H23Cl2N5O2 |
Molecular Weight:351.402
Density:1.3±0.1 g/cm3
Boiling Point:541.7±50.0 °C at 760 mmHg
Melting Point:226 - 230ºC |
28797-61-7 |
| Methyl toluenesulfonate |
C8H10O3S |
Molecular Weight:186.228
Density:1.2±0.1 g/cm3
Boiling Point:289.2±19.0 °C at 760 mmHg
Melting Point:N/A |
28804-47-9 |
| 2,6-DIMETHYLNAPHTHALENE |
C12H12 |
Molecular Weight:156.224
Density:1.0±0.1 g/cm3
Boiling Point:264.4±10.0 °C at 760 mmHg
Melting Point:106-110ºC(lit.) |
28804-88-8 |
| Phenyl benzonitrile |
C13H9N |
Molecular Weight:179.21700
Density:1.11g/cm3
Boiling Point:326.3ºC at 760 mmHg
Melting Point:N/A |
28804-96-8 |
| Isothiazole |
C3H3NS |
Molecular Weight:85.128
Density:1.2±0.1 g/cm3
Boiling Point:20.0±13.0 °C at 760 mmHg
Melting Point:N/A |
288-16-4 |
| Z-ALA-OME |
C12H15NO4 |
Molecular Weight:237.252
Density:1.2±0.1 g/cm3
Boiling Point:369.7±35.0 °C at 760 mmHg
Melting Point:46-47℃ |
28819-05-8 |
| d-glucose-[1-3h(n)] |
C6H11O6T |
Molecular Weight:182.16400
Density:1.581g/cm3
Boiling Point:527.1ºC at 760mmHg
Melting Point:146ºC |
28823-03-2 |
| 5-methyl-2-phenyl-1H-imidazole-4-carboxylic acid |
C11H10N2O2 |
Molecular Weight:202.20900
Density:1.304g/cm3
Boiling Point:489.3ºC at 760mmHg
Melting Point:N/A |
28824-94-4 |
| 1-(4-FLUORO-PHENYL)-3,3-BIS-METHYLSULFANYL-PROPENONE |
C11H9FN2O2 |
Molecular Weight:220.20000
Density:1.336g/cm3
Boiling Point:378.841ºC at 760 mmHg
Melting Point:N/A |
288251-66-1 |
| (3S,4R,5R,6S)-4-OXO-PENTANOICACID4,5-BIS-BENZYLOXY-6-BENZYLOXYMETHYL-2-P-TOLYLSULFAN |
C11H13N7 |
Molecular Weight:243.26800
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
288313-99-5 |
| 4-(chloromethyl)-2-methylquinoline |
C11H10ClN |
Molecular Weight:191.65700
Density:1.192g/cm3
Boiling Point:316.779ºC at 760 mmHg
Melting Point:N/A |
288399-19-9 |
| 2-AMINO-6,8-DICHLORO-3-FORMYLCHROMONE |
C10H5Cl2NO3 |
Molecular Weight:258.05800
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
288399-45-1 |
| 6-FLUORO-4-METHYLCOUMARIN-3-CARBONITRIL& |
C11H6FNO2 |
Molecular Weight:203.16900
Density:1.37g/cm3
Boiling Point:354.3ºC at 760 mmHg
Melting Point:164-168ºC(lit.) |
288399-90-6 |
| Pyrazine,2-methyl-6-(methylthio)- |
C6H8N2S |
Molecular Weight:140.20600
Density:1.14 g/cm3
Boiling Point:222.5ºC at 760 mmHg
Melting Point:N/A |
2884-13-1 |
| Isobornyl 2-methyl-2-propenoate |
C14H22O2 |
Molecular Weight:222.32300
Density:N/A
Boiling Point:112-117ºC at 0.33 kPa
Melting Point:N/A |
28854-39-9 |
| (S)-N-Fmoc-2-(7'-octenyl)alanine |
C26H31NO4 |
Molecular Weight:421.52900
Density:1.14
Boiling Point:588.348ºC at 760 mmHg
Melting Point:296°C |
288617-75-4 |
| (R)-N-Fmoc-2-(2'-propylenyl)alanine |
C21H21NO4 |
Molecular Weight:351.39600
Density:1.224
Boiling Point:325.767ºC at 760 mmHg
Melting Point:N/A |
288617-76-5 |
| (2R)-2-[[(9H-Fluoren-9-ylmethoxy)carbonyl]amino]-2-methyl-6-heptenoic acid |
C23H25NO4 |
Molecular Weight:379.449
Density:1.185
Boiling Point:591.7±45.0 °C at 760 mmHg
Melting Point:N/A |
288617-77-6 |
| CBZ-D-Isoleucine |
C14H19NO4 |
Molecular Weight:265.305
Density:1.2±0.1 g/cm3
Boiling Point:442.8±38.0 °C at 760 mmHg
Melting Point:N/A |
28862-89-7 |
| Biphenyl, 4-(4-methylcyclohexyl)-, cis |
C19H22 |
Molecular Weight:250.37800
Density:0.978 g/cm3
Boiling Point:373.897ºC at 760 mmHg
Melting Point:N/A |
28864-95-1 |
| 6,7-Dimethoxy-2,4-Quinazolinedione |
C10H10N2O4 |
Molecular Weight:222.19700
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
2888-44-0 |
| 3-Chloro-5-iodobenzonitrile |
C7H3ClIN |
Molecular Weight:263.463
Density:2.0±0.1 g/cm3
Boiling Point:275.4±25.0 °C at 760 mmHg
Melting Point:N/A |
289039-30-1 |
| (R)-3-Amino-2-azepanone |
C6H12N2O |
Molecular Weight:128.172
Density:1.0±0.1 g/cm3
Boiling Point:315.1±35.0 °C at 760 mmHg
Melting Point:N/A |
28957-33-7 |
| holmium(3+),oxalate,decahydrate |
C6H20Ho2O22 |
Molecular Weight:774.07000
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
28965-57-3 |
| ac-dl-phe-oh |
C11H13NO3 |
Molecular Weight:207.22600
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
2901-61-3 |
| N2-Cyclopropylpyridine-2,3-diamine |
C8H11N3 |
Molecular Weight:149.19300
Density:1.312g/cm3
Boiling Point:341.2ºC at 760 mmHg
Melting Point:N/A |
290313-23-4 |
| (-)-1,1'-bis((2s,4s)-2,4-diethylphosphotano)ferrocene |
C24H36FeP2 |
Molecular Weight:442.33500
Density:N/A
Boiling Point:N/A
Melting Point:76ºC |
290347-66-9 |
| methyl indene |
C10H10 |
Molecular Weight:130.18600
Density:0.987g/cm3
Boiling Point:199ºC at 760mmHg
Melting Point:N/A |
29036-25-7 |
| 2-(2H3)Methyl(3,3,3-2H3)propanoic acid |
C4H2D6O2 |
Molecular Weight:94.142
Density:1.0±0.1 g/cm3
Boiling Point:155.2±8.0 °C at 760 mmHg
Melting Point:N/A |
29054-08-8 |
| 2,3-Dichlorobenzoyl |
C7H3Cl3O |
Molecular Weight:209.457
Density:1.5±0.1 g/cm3
Boiling Point:257.2±20.0 °C at 760 mmHg
Melting Point:30-32ºC |
2905-60-4 |
| potassium metaphosphate |
KO3P |
Molecular Weight:118.07000
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
29057-10-1 |
| 4,4'-bis(methoxymethyl)diphenyl ether |
C16H18O3 |
Molecular Weight:258.31200
Density:1.083 g/cm3
Boiling Point:329.7ºC at 760 mmHg
Melting Point:N/A |
29060-60-4 |
| Menthyl acetate |
C12H22O2 |
Molecular Weight:198.30200
Density:0.922
Boiling Point:228-229ºC
Melting Point:N/A |
29066-34-0 |
| (E)-ALPHA,BETA,2,3,4,5,6-HEPTACHLORO STYRENE |
C8HCl7 |
Molecular Weight:345.26500
Density:1.728g/cm3
Boiling Point:412.9ºC at 760 mmHg
Melting Point:N/A |
29086-38-2 |
| (Z)-ALPHA,BETA,2,3,4,5,6-HEPTACHLORO STYRENE |
C8HCl7 |
Molecular Weight:345.26500
Density:1.728g/cm3
Boiling Point:412.9ºC at 760 mmHg
Melting Point:N/A |
29086-39-3 |
| Bromoform |
CBr3D |
Molecular Weight:252.731
Density:3.0±0.1 g/cm3
Boiling Point:149.2±0.0 °C at 760 mmHg
Melting Point:8ºC |
2909-52-6 |
| Procyanidol B4 |
C30H26O12 |
Molecular Weight:578.52
Density:1.705g/cm3
Boiling Point:955.3ºC at 760 mmHg
Melting Point:N/A |
29106-51-2 |
| (S)-1,2-DIAMINOPROPANEDIHYDROCHLORIDE |
C5H12O2 |
Molecular Weight:104.14800
Density:0.974 g/cm3
Boiling Point:199.5ºC at 760 mmHg
Melting Point:N/A |
29117-54-2 |
| S-2-Chloro-2-phenylacetic acid |
C8H7ClO2 |
Molecular Weight:170.59300
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
29125-24-4 |
| allopurinol |
C5H4N4O |
Molecular Weight:136.11100
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
291279-53-3 |
| N,N-Dimethyl(2H)formamide |
C3H6DNO |
Molecular Weight:74.100
Density:0.9±0.1 g/cm3
Boiling Point:153.0±0.0 °C at 760 mmHg
Melting Point:-61ºC(lit.) |
2914-27-4 |
| (2R)-3-Butyn-2-ol |
C4H6O |
Molecular Weight:70.090
Density:0.9±0.1 g/cm3
Boiling Point:104.0±0.0 °C at 760 mmHg
Melting Point:N/A |
2914-69-4 |
| 2,3,6-Trichloropyridine |
C5H2Cl3N |
Molecular Weight:182.435
Density:1.5±0.1 g/cm3
Boiling Point:231.1±35.0 °C at 760 mmHg
Melting Point:N/A |
29154-14-1 |
| POLY(PROPYLENE-CO-1-BUTENE) |
C7H14 |
Molecular Weight:98.18610
Density:0.99 g/mL at 25ºC(lit.)
Boiling Point:N/A
Melting Point:135ºC |
29160-13-2 |
| hexamethylene bis(chloroformate) |
C8H12Cl2O4 |
Molecular Weight:243.08400
Density:1.277g/cm3
Boiling Point:278.5ºC at 760mmHg
Melting Point:N/A |
2916-20-3 |
| 1,2-(2H4)Benzenediamine |
C6H4D4N2 |
Molecular Weight:112.166
Density:1.2±0.1 g/cm3
Boiling Point:257.0±0.0 °C at 760 mmHg
Melting Point:N/A |
291765-93-0 |