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 |
| 4-Chloro-2-cyclopentylphenol
|
C11H13ClO
|
Molecular Weight:196.673
Density:1.2±0.1 g/cm3
Boiling Point:247.6±28.0 °C at 760 mmHg
Melting Point:N/A
|
13347-42-7
|
| (+)-1,2-BIS((2R,5R)-2,5-DI-I-PROPYLPHOSPHOLANO)BENZENE)1,5-CYCLOOCTADIENE)RHODIUM (I) TETRAFLUOROBORATE
|
C34H56BF4P2Rh
|
Molecular Weight:716.46600
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
569650-64-2
|
| 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin
|
C12H2Cl6O2
|
Molecular Weight:390.86100
Density:1.777 g/cm3
Boiling Point:478ºC at 760 mmHg
Melting Point:285-286ºC
|
57653-85-7
|
| tetrachloroethane
|
C2H2Cl4
|
Molecular Weight:167.849
Density:1.6±0.1 g/cm3
Boiling Point:132.4±8.0 °C at 760 mmHg
Melting Point:-68.1ºC
|
630-20-6
|
| Benzo[ghi]perylene
|
C22H12
|
Molecular Weight:276.331
Density:1.4±0.1 g/cm3
Boiling Point:501.0±0.0 °C at 760 mmHg
Melting Point:277-279ºC(lit.)
|
191-24-2
|
| tridiphane
|
C10H7Cl5O
|
Molecular Weight:320.42700
Density:1.5772 (rough estimate)
Boiling Point:435.99°C (rough estimate)
Melting Point:42.8°C
|
58138-08-2
|
| neutral red iodide
|
C15H17IN4
|
Molecular Weight:380.22700
Density:N/A
Boiling Point:N/A
Melting Point:290ºC (dec.)(lit.)
|
34038-87-4
|
| 2'-Des(1-hydroxy-1-methylethyl)-2'-methycarboxy Montelukast
|
C34H32ClNO4S
|
Molecular Weight:586.14000
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
851755-56-1
|
| Diiron nonacarbonyl
|
C9Fe2O9
|
Molecular Weight:363.78100
Density:2.85 g/cm3
Boiling Point:209°C (rough estimate)
Melting Point:100ºC
|
15321-51-4
|
| Bis(pentamethylcyclopentadienyl)iron(II)
|
C20H30Fe
|
Molecular Weight:326.29700
Density:N/A
Boiling Point:170.2ºC at 760 mmHg
Melting Point:277 °C (dec.)(lit.)
|
12126-50-0
|
| (S)-(+)-1,1'-Binaphthol-2,2'-bis(trifluoromethanesulfonate)
|
C22H18F6O8S2
|
Molecular Weight:550.448
Density:1.6±0.1 g/cm3
Boiling Point:578.8±50.0 °C at 760 mmHg
Melting Point:83-85 °C(lit.)
|
128544-05-8
|
| Bis(tetramethylcyclopentadienyl)zirconium dichloride
|
C18H26Cl2Zr
|
Molecular Weight:404.52900
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
119445-90-8
|
| Bis(cyclopentadienyl)vanadium, sublimed
|
C10H10V
|
Molecular Weight:181.12800
Density:N/A
Boiling Point:200ºC 0,1mm
Melting Point:165-167ºC
|
1277-47-0
|
| bis(pentamethylcyclopentadienyl)hafnium dichloride
|
C20H30Cl2Hf
|
Molecular Weight:519.84800
Density:>300
Boiling Point:N/A
Melting Point:>300 °C(lit.)
|
85959-83-7
|
| disamarium tricarbonate
|
C18H18N2OS2
|
Molecular Weight:342.47800
Density:N/A
Boiling Point:333.6ºC at 760 mmHg
Melting Point:>500ºC (dec.)
|
5895-47-6
|
| Di-1,3-cyclopentadien-1-yl(dimethyl)zirconium
|
C12H16Zr
|
Molecular Weight:251.479
Density:N/A
Boiling Point:170°C
Melting Point:170 °C (dec.)(lit.)
|
12636-72-5
|
| Dimethylsilylbis(cyclopentadienyl)zirconium dichloride
|
C12H14Cl2SiZr
|
Molecular Weight:348.45500
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
86050-32-0
|
| Scandium(III) chloride hexahydrate
|
H12Cl3O6Sc
|
Molecular Weight:259.407
Density:N/A
Boiling Point:N/A
Melting Point:63-66 °C(lit.)
|
20662-14-0
|
| HAFNIUM(IV) 2,4-PENTANEDIONATE
|
C20H28HfO8
|
Molecular Weight:574.92200
Density:N/A
Boiling Point:82ºC/.001mmHg
Melting Point:193ºC
|
17475-67-1
|
| Di-1H-inden-1-yl(dimethyl)silane
|
C20H20Si
|
Molecular Weight:288.458
Density:1.1±0.1 g/cm3
Boiling Point:425.8±34.0 °C at 760 mmHg
Melting Point:85-87ºC(lit.)
|
136946-83-3
|
| bis(ethylcyclopentadienyl)chromium
|
C14H18Cr
|
Molecular Weight:238.28900
Density:1.15 g/mL at 25ºC(lit.)
Boiling Point:N/A
Melting Point:N/A
|
55940-03-9
|
| n-butylcyclopentadienylzirconium trichloride
|
C9H13Cl3Zr
|
Molecular Weight:318.78300
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
329735-75-3
|
| 2-ethylcyclopenta-1,3-diene,nickel(2+)
|
C14H18Ni
|
Molecular Weight:244.98600
Density:1.137 g/mL at 25ºC(lit.)
Boiling Point:90ºC
Melting Point:N/A
|
31886-51-8
|
| N,N,N',N'-Tetraethylphosphorodiamidic chloride
|
C8H20ClN2OP
|
Molecular Weight:226.684
Density:1.1±0.1 g/cm3
Boiling Point:266.6±23.0 °C at 760 mmHg
Melting Point:N/A
|
1794-24-7
|
| TRIS(TRIMETHYLSILYL)PHOSPHINE
|
C9H27PSi3
|
Molecular Weight:250.541
Density:0.863 g/mL at 25 °C(lit.)
Boiling Point:243.5±0.0 °C at 760 mmHg
Melting Point:24 °C
|
15573-38-3
|
| Oxo[tris(2-propanolato)]vanadium
|
C9H21O4V
|
Molecular Weight:244.202
Density:1.035 g/mL at 25 °C(lit.)
Boiling Point:80-82 °C2 mm Hg(lit.)
Melting Point:-11°C
|
5588-84-1
|
| europium nitrate
|
H12EuN3O15
|
Molecular Weight:446.070
Density:N/A
Boiling Point:83ºC at 760 mmHg
Melting Point:85°C
|
10031-53-5
|
| Molybdenyl acetylacetonate
|
C10H14MoO6
|
Molecular Weight:326.155
Density:1,64 g/cm3
Boiling Point:138.4ºC at 760mmHg
Melting Point:184 °C (dec.)(lit.)
|
17524-05-9
|
| (Trimethyl)methylcyclopentadienylplatinum(IV)
|
C9H16Pt
|
Molecular Weight:319.30100
Density:N/A
Boiling Point:23°C 0,05mm
Melting Point:26-29 °C(lit.)
|
94442-22-5
|
| bis(i-propylcyclopentadienyl)titanium dichloride
|
C16H22Cl2Ti
|
Molecular Weight:333.11900
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
12130-65-3
|
| 2-tert-butylcyclopenta-1,3-diene,carbanide,hafnium(4+)
|
C20H32Hf
|
Molecular Weight:450.95800
Density:N/A
Boiling Point:N/A
Melting Point:73-76ºC
|
68193-45-3
|
| tris-(3,5-Dimethylphenyl)phosphine
|
C24H27P
|
Molecular Weight:346.44500
Density:N/A
Boiling Point:474.1ºC at 760 mmHg
Melting Point:161-164ºC
|
69227-47-0
|
| Terbium(III) chloride hexahydrate
|
Cl3H12O6Tb
|
Molecular Weight:373.37600
Density:4.35 g/mL at 25 °C(lit.)
Boiling Point:100ºC at 760 mmHg
Melting Point:145ºC
|
13798-24-8
|
| TRIS(I-PROPYLCYCLOPENTADIENYL)PRASEODYMIUM
|
C27H41
|
Molecular Weight:365.61400
Density:N/A
Boiling Point:127.2ºC at 760 mmHg
Melting Point:50-54ºC
|
69021-86-9
|
| Bis(Methylcyclopentadienyl)nickel(II)
|
C12H14Ni
|
Molecular Weight:216.93300
Density:N/A
Boiling Point:80.4ºC at 760 mmHg ;85-90ºC1 mm Hg(lit.)
Melting Point:34-36ºC(lit.)
|
1293-95-4
|
| bis(dichlorophosphino)methane
|
CH2Cl4P2
|
Molecular Weight:217.78600
Density:1.601 g/mL at 25ºC(lit.)
Boiling Point:101ºC
Melting Point:N/A
|
28240-68-8
|
| lithium,1,2,3,5,5-pentamethylcyclopenta-1,3-diene
|
C10H15Li
|
Molecular Weight:142.16700
Density:N/A
Boiling Point:N/A
Melting Point:230ºC
|
51905-34-1
|
| 1,2-Bis-(1H-inden-3-yl)-ethane
|
C20H18
|
Molecular Weight:258.357
Density:1.1±0.1 g/cm3
Boiling Point:416.1±40.0 °C at 760 mmHg
Melting Point:121-125ºC(lit.)
|
18657-57-3
|
| bis(trimethylsilyl)azanide,lanthanum(3+)
|
C18H54LaN3Si6
|
Molecular Weight:620.060
Density:N/A
Boiling Point:126ºC at 760mmHg
Melting Point:149-153ºC(lit.)
|
175923-07-6
|
| Terbium(3+) nitrate hydrate (1:3:5)
|
H10N3O14Tb
|
Molecular Weight:435.017
Density:N/A
Boiling Point:N/A
Melting Point:89.3ºC
|
57584-27-7
|
| RuPhos
|
C30H43O2P
|
Molecular Weight:466.63
Density:N/A
Boiling Point:551.7±40.0 °C at 760 mmHg
Melting Point:123-124ºC
|
787618-22-8
|
| Lithium tetramethylcyclopentadienide
|
C9H13Li
|
Molecular Weight:128.14100
Density:N/A
Boiling Point:N/A
Melting Point:>350ºC(lit.)
|
82061-21-0
|
| 1,3-Cyclopentadien-1-ylzirconium(3+) trichloride
|
C5H5Cl3Zr
|
Molecular Weight:262.676
Density:N/A
Boiling Point:N/A
Melting Point:210 °C (dec.)(lit.)
|
34767-44-7
|
| tris(i-propylcyclopentadienyl)cerium
|
C24H33Ce
|
Molecular Weight:461.63500
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
122528-16-9
|
| praseodymium(3+) acetate
|
C6H15O9Pr
|
Molecular Weight:372.086
Density:1.2g/cm3
Boiling Point:536.2ºC at 760 mmHg
Melting Point:N/A
|
6192-12-7
|
| YTTERBIUM(III) CHLORIDE HEXAHYDRATE
|
H12Cl3O6Yb
|
Molecular Weight:387.491
Density:2.58 g/mL at 25 °C(lit.)
Boiling Point:N/A
Melting Point:180 °C (dec.)(lit.)
|
10035-01-5
|
| BIS(ISOPROPYLCYCLOPENTADIENYL)HAFNIUM DICHLORIDE
|
C16H22Cl2Hf
|
Molecular Weight:463.74200
Density:N/A
Boiling Point:N/A
Melting Point:126-128ºC
|
66349-80-2
|
| tris(tetramethylcyclopentadienyl)neodymium
|
C27H39Nd
|
Molecular Weight:507.83900
Density:N/A
Boiling Point:N/A
Melting Point:N/A
|
164528-22-7
|
| Holmium(III) chloride hexahydrate
|
H12Cl3HoO6
|
Molecular Weight:379.381
Density:N/A
Boiling Point:N/A
Melting Point:718 °C(lit.)
|
14914-84-2
|
| 2,2,6,6-Tetramethylheptane
|
C11H24
|
Molecular Weight:156.308
Density:0.7±0.1 g/cm3
Boiling Point:162.5±7.0 °C at 760 mmHg
Melting Point:N/A
|
40117-45-1
|