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 |
| ETHYL (S)-2-HYDROXY-2-METHYLBENZENEPROPANOATE |
C12H16O3 |
Molecular Weight:208.25400
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
285130-47-4 |
| 2,6-Dimethyl(O-2H4)phenol |
C8H6D4O |
Molecular Weight:126.189
Density:1.0±0.1 g/cm3
Boiling Point:201.1±0.0 °C at 760 mmHg
Melting Point:43-45ºC(lit.) |
285132-85-6 |
| 4-(2H2)Amino(O-2H5)phenol |
C6D7NO |
Molecular Weight:116.169
Density:1.2±0.1 g/cm3
Boiling Point:282.0±23.0 °C at 760 mmHg
Melting Point:188-190ºC(lit.) |
285132-88-9 |
| 2,6-Bis[(2H5)ethyl](2H5)aniline |
C10D15N |
Molecular Weight:164.325
Density:0.9±0.1 g/cm3
Boiling Point:244.3±9.0 °C at 760 mmHg
Melting Point:N/A |
285132-89-0 |
| 4-(chlorophenyl) -2 3 5 6-d4 98 atom %d |
C6HClD4O |
Molecular Weight:132.58100
Density:1.346 g/mL at 25ºC
Boiling Point:220ºC
Melting Point:40-45ºC(lit.) |
285132-91-4 |
| 2,6-dimethyl-d6-nitrobenzene |
C8H3D6NO2 |
Molecular Weight:157.20000
Density:1.153 g/mL at 25ºC
Boiling Point:225ºC
Melting Point:14-16ºC(lit.) |
285138-83-2 |
| 6-CHLORO-6-DEOXY-ALPHA-D-GLUCOPYRANOSE |
C6H11ClO5 |
Molecular Weight:198.60200
Density:N/A
Boiling Point:N/A
Melting Point:N/A |
28528-86-1 |
| 4-Methylumbelliferyl2,3,4,6-tetra-O-acetyl-a-D-mannopyranoside |
C24H26O12 |
Molecular Weight:506.45600
Density:N/A
Boiling Point:N/A
Melting Point:221-223°C |
28541-71-1 |
| 4-methoxyphenyl alpha-d-mannopyranoside |
C13H18O7 |
Molecular Weight:286.27800
Density:1.427g/cm3
Boiling Point:519ºC at 760 mmHg
Melting Point:154.0 to 158.0 °C |
28541-75-5 |
| 6-Bromo-2-naphthyl alpha-D-mannopyranoside |
C16H17BrO6 |
Molecular Weight:385.20700
Density:1.698 g/cm3
Boiling Point:608.6ºC at 760 mmHg
Melting Point:248-252ºC |
28541-84-6 |
| 3,4-Dihydro-1H-benzo[e][1,4]diazepin-5(2H)-one |
C9H10N2O |
Molecular Weight:162.189
Density:1.1±0.1 g/cm3
Boiling Point:436.0±25.0 °C at 760 mmHg
Melting Point:N/A |
28544-83-4 |
| UNII:19ND350H65 |
C26H42O4 |
Molecular Weight:418.609
Density:1.0±0.1 g/cm3
Boiling Point:463.3±18.0 °C at 760 mmHg
Melting Point:-48ºC |
28553-12-0 |
| R(+)-2-CHLOROPROPIONIC ACID |
C3H5ClO2 |
Molecular Weight:108.52400
Density:1.285g/cm3
Boiling Point:189ºC at 760mmHg
Melting Point:-12.1ºC |
28554-00-9 |
| (2H2)Methanol |
CH2D2O |
Molecular Weight:34.054
Density:0.8±0.1 g/cm3
Boiling Point:48.1±3.0 °C at 760 mmHg
Melting Point:-98ºC(lit.) |
28563-35-1 |
| 6-azanyl-1H-pyrimidin-2-one |
C4H5N3O |
Molecular Weight:116.06800
Density:N/A
Boiling Point:N/A
Melting Point:>300ºC(lit.) |
285978-06-5 |
| Equilin-2,4,16,16-d4 |
C18H16D4O2 |
Molecular Weight:272.375
Density:1.2±0.1 g/cm3
Boiling Point:459.1±45.0 °C at 760 mmHg
Melting Point:238-240ºC(lit.) |
285979-79-5 |
| dimethyl sulfate (13c2) |
C2H6O4S |
Molecular Weight:128.11700
Density:1.355 g/mL at 25ºC
Boiling Point:188ºC(lit.)
Melting Point:-32ºC(lit.) |
286013-18-1 |
| 3',4'-dihydroxyacetophenone |
C8H8O3 |
Molecular Weight:152.14700
Density:1.307g/cm3
Boiling Point:265.1ºC at 760mmHg
Melting Point:N/A |
28631-86-9 |
| N,N'-Di-Sec-Octyl-P-Phenylenediamine |
C22H40N2 |
Molecular Weight:332.56600
Density:0.923g/cm3
Boiling Point:456.4ºC at 760mmHg
Melting Point:N/A |
28633-36-5 |
| ferric citrate |
C6H5FeO7 |
Molecular Weight:244.94500
Density:N/A
Boiling Point:309.6ºC at 760mmHg
Melting Point:N/A |
28633-45-6 |
| oxalic acid,dihydrate |
C2H6O6 |
Molecular Weight:128.05100
Density:N/A
Boiling Point:N/A
Melting Point:101-102ºC(lit.) |
286367-59-7 |
| Sodium butyrate-2,4-13C2 |
C4H7NaO2 |
Molecular Weight:112.07200
Density:N/A
Boiling Point:N/A
Melting Point:250-253ºC(lit.) |
286367-68-8 |
| Sodium butyrate-4-13C |
C4H7NaO2 |
Molecular Weight:111.08000
Density:N/A
Boiling Point:N/A
Melting Point:250-253ºC(lit.) |
286367-75-7 |
| sodium,2,2,2-trifluoroacetate |
C2F3NaO2 |
Molecular Weight:136.99800
Density:N/A
Boiling Point:N/A
Melting Point:207ºC (dec.)(lit.) |
286425-32-9 |
| DL-Phenylalanine-3-13C |
C9H11NO2 |
Molecular Weight:166.18200
Density:1.201g/cm3
Boiling Point:N/A
Melting Point:266-267ºC (dec.)(lit.) |
286425-42-1 |
| fmoc-phe-oh |
C24H21NO4 |
Molecular Weight:387.42800
Density:1.276g/cm3
Boiling Point:620.1ºC at 760mmHg
Melting Point:180-187ºC(lit.) |
286460-71-7 |
| Euphorbiasteroid |
C32H40O8 |
Molecular Weight:552.655
Density:1.2±0.1 g/cm3
Boiling Point:633.1±55.0 °C at 760 mmHg
Melting Point:N/A |
28649-59-4 |
| S-2--Bromo-4-methylvaleric acid |
C6H11BrO2 |
Molecular Weight:195.05400
Density:1.432g/cm3
Boiling Point:240.5ºC at 760 mmHg
Melting Point:N/A |
28659-87-2 |
| 2,2'-thiophene-2,5-diylbis(benzoxazole) |
C18H10N2O2S |
Molecular Weight:318.34900
Density:1.385
Boiling Point:466.4ºC at 760 mmHg
Melting Point:216-220ºC |
2866-43-5 |
| Hyodeoxycholic acid methyl ester |
C25H42O4 |
Molecular Weight:406.59900
Density:1.089g/cm3
Boiling Point:507.6ºC at 760 mmHg
Melting Point:N/A |
2868-48-6 |
| 1-Tridecanamine |
C13H29N |
Molecular Weight:199.376
Density:0.8±0.1 g/cm3
Boiling Point:275.7±3.0 °C at 760 mmHg
Melting Point:30-32ºC(lit.) |
2869-34-3 |
| (d)-n-(benzyloxycarbonyl)pipecolic acid |
C14H17NO4 |
Molecular Weight:263.28900
Density:1.265g/cm3
Boiling Point:443.9ºC at 760 mmHg
Melting Point:111-115ºC(lit.) |
28697-09-8 |
| (l)-n-(benzyloxycarbonyl)pipecolic acid |
C14H17NO4 |
Molecular Weight:263.289
Density:1.3±0.1 g/cm3
Boiling Point:443.9±45.0 °C at 760 mmHg
Melting Point:111-115ºC(lit.) |
28697-11-2 |
| D-Arabinopyranose |
C5H10O5 |
Molecular Weight:150.130
Density:1.8±0.1 g/cm3
Boiling Point:333.2±42.0 °C at 760 mmHg
Melting Point:152-160ºC |
28697-53-2 |
| tetraacetylribofuranose |
C13H18O9 |
Molecular Weight:318.27700
Density:1.29g/cm3
Boiling Point:385.6ºC at 760mmHg
Melting Point:N/A |
28708-32-9 |
| N-CARBOBENZYLOXY-D-PHENYLALANINE+ |
C17H17NO4 |
Molecular Weight:299.32100
Density:1.162g/cm3
Boiling Point:489ºC at 760mmHg
Melting Point:85-88ºC |
28709-70-8 |
| (2R,3S,4S,5S)-2,3,4,5,6-pentahydroxyhexanal-13C |
C6H12O6 |
Molecular Weight:182.14100
Density:1.732g/cm3
Boiling Point:N/A
Melting Point:150-152ºC(lit.) |
287100-67-8 |
| Lauric acid-13C-1 |
C1113CH24O2 |
Molecular Weight:201.31
Density:N/A
Boiling Point:225ºC100 mm Hg(lit.)
Melting Point:44-46ºC(lit.) |
287100-78-1 |
| Palmitic acid-13C |
C1513CH32O2 |
Molecular Weight:257.417
Density:0.9±0.1 g/cm3
Boiling Point:271.5ºC100 mm Hg(lit.)
Melting Point:61-64ºC(lit.) |
287100-87-2 |
| Cyclo(-leu-pro) |
C11H18N2O2 |
Molecular Weight:210.27
Density:1.1±0.1 g/cm3
Boiling Point:427.6±34.0 °C at 760 mmHg
Melting Point:163-165ºC |
2873-36-1 |
| (1-13C)-2-Propenamide |
C3H5NO |
Molecular Weight:72.071
Density:1.0±0.1 g/cm3
Boiling Point:125ºC/25 mmHg(lit.)
Melting Point:82-86ºC(lit.) |
287399-24-0 |
| Tetrachloroethylene-13C1 |
C2Cl4 |
Molecular Weight:166.82600
Density:1.623 g/mL at 25ºC
Boiling Point:121ºC(lit.)
Melting Point:-22ºC(lit.) |
287399-46-6 |
| Melamine-15N3 |
C3H6N6 |
Molecular Weight:129.100
Density:1.7±0.1 g/cm3
Boiling Point:N/A
Melting Point:>300℃ |
287476-11-3 |
| hexan-1-amine |
C6H15N |
Molecular Weight:102.18300
Density:0.774 g/mL at 25ºC
Boiling Point:131-132ºC(lit.)
Melting Point:-23ºC(lit.) |
287476-14-6 |
| Thiourea15N2 |
CH4N2S |
Molecular Weight:78.10770
Density:1.326g/cm3
Boiling Point:N/A
Melting Point:170-176ºC(lit.) |
287476-21-5 |
| L-Asparagine Monohydrate (15N2) |
C4H10N2O4 |
Molecular Weight:152.12000
Density:N/A
Boiling Point:N/A
Melting Point:233-235ºC(lit.) |
287484-32-6 |
| fmoc-asp-oh-15n |
C19H17NO6 |
Molecular Weight:356.33500
Density:N/A
Boiling Point:N/A
Melting Point:190ºC(lit.) |
287484-33-7 |
| (2R)-2-azanyl-4-methylpentanoic acid |
C6H13NO2 |
Molecular Weight:132.16600
Density:N/A
Boiling Point:N/A
Melting Point:>300ºC(lit.) |
287484-39-3 |
| Diammonium hydrogenphosphate-<<15>>N |
H9N2O4P |
Molecular Weight:134.04300
Density:N/A
Boiling Point:N/A
Melting Point:198ºC(lit.) |
287488-11-3 |
| 1,1,1,2,2,3,3,3-octadeuteriopropane |
C3D8 |
Molecular Weight:52.14490
Density:0.667g/cm3
Boiling Point:-42.1ºC(lit.)
Melting Point:-188ºC(lit.) |
2875-94-7 |