CAS Number Index

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-Chloro-4-nitro-3-pyridinol	C₅H₃ClN₂O₃	Molecular Weight:174.542 Density:1.7±0.1 g/cm3 Boiling Point:334.7±37.0 °C at 760 mmHg Melting Point:N/A	15128-85-5
2-Fluoro-2-methyl-1-propanol	C₄H₉FO	Molecular Weight:92.112 Density:0.9±0.1 g/cm3 Boiling Point:101.9±10.0 °C at 760 mmHg Melting Point:N/A	3109-99-7
h-d-glu(obzl)-obzl hcl	C₁₉H₂₂ClNO₄	Molecular Weight:363.83500 Density:N/A Boiling Point:N/A Melting Point:N/A	146844-02-2
H-Gly-Gly-OBzl · p-tosylate	C₁₈H₂₂N₂O₆S	Molecular Weight:394.442 Density:N/A Boiling Point:408ºC at 760 mmHg Melting Point:157-159ºC	1738-82-5
H-Phe-Trp-OH	C₂₀H₂₁N₃O₃	Molecular Weight:351.399 Density:1.3±0.1 g/cm3 Boiling Point:688.3±55.0 °C at 760 mmHg Melting Point:N/A	24587-41-5
Z-Pro-ONp	C₁₉H₁₈N₂O₆	Molecular Weight:370.356 Density:1.4±0.1 g/cm3 Boiling Point:541.7±50.0 °C at 760 mmHg Melting Point:N/A	3304-59-4
LHRH (7-10) · 2 HCl	C₁₉H₃₈Cl₂N₈O₄	Molecular Weight:513.46200 Density:N/A Boiling Point:N/A Melting Point:N/A	75690-75-4
Z-Gly-Ser-OH	C₁₃H₁₆N₂O₆	Molecular Weight:296.27600 Density:1.374 g/cm3 Boiling Point:641.7ºC at 760 mmHg Melting Point:N/A	4180-62-5
5,6,7,8-tetrahydronaphthalene-2-sulfonyl chloride	C₁₀H₁₁ClO₂S	Molecular Weight:230.71100 Density:1.334 g/cm3 Boiling Point:341.8ºC at 760 mmHg Melting Point:N/A	61551-49-3
1-Isopropyl-3-methyl-1H-pyrazol-5-amine	C₇H₁₃N₃	Molecular Weight:139.198 Density:1.1±0.1 g/cm3 Boiling Point:245.4±20.0 °C at 760 mmHg Melting Point:N/A	1124-16-9
Alpha-L-Rhamnopyranose	C₆H₁₄O₆	Molecular Weight:182.17200 Density:1.556±0.06 g/cm3(Predicted) Boiling Point:323.9±42.0 °C(Predicted) Melting Point:91-93ºC	6014-42-2
H-Met-Gly-OH	C₇H₁₄N₂O₃S	Molecular Weight:206.26300 Density:1.267 g/cm3 Boiling Point:487.4ºC at 760 mmHg Melting Point:212ºC	14486-03-4
Cbz-Ile-Met-OH	C₁₉H₂₈N₂O₅S	Molecular Weight:396.50100 Density:1.195g/cm3 Boiling Point:649.1ºC at 760 mmHg Melting Point:N/A	84030-22-8
Dipeptide-2	C₁₆H₂₁N₃O₃	Molecular Weight:303.356 Density:1.3±0.1 g/cm3 Boiling Point:604.8±55.0 °C at 760 mmHg Melting Point:N/A	24587-37-9
Z-Ala-Leu-OH	C₁₇H₂₄N₂O₅	Molecular Weight:336.38300 Density:N/A Boiling Point:N/A Melting Point:N/A	24959-68-0
Fmoc-HomoLeu-OH	C₂₂H₂₅NO₄	Molecular Weight:367.438 Density:1.2±0.1 g/cm3 Boiling Point:568.1±33.0 °C at 760 mmHg Melting Point:N/A	180414-94-2
2,3,4-tri-o-benzyl-l-fucopyranose	C₂₇H₃₀O₅	Molecular Weight:434.52400 Density:1.2g/cm3 Boiling Point:570.1ºC at 760 mmHg Melting Point:89-91°C	60431-34-7
ZL-Arg-pNA * HCl	C₂₀H₂₅ClN₆O₅	Molecular Weight:464.903 Density:N/A Boiling Point:N/A Melting Point:N/A	59188-53-3
D-Glucitol,1,2,3,4,5,6-hexaacetate	C₁₈H₂₆O₁₂	Molecular Weight:434.39200 Density:1.248g/cm3 Boiling Point:466.777ºC at 760 mmHg Melting Point:100-104ºC(lit.)	7208-47-1
H-Gly-Tyr-Gly-OH	C₁₃H₁₇N₃O₅	Molecular Weight:295.29100 Density:1.381g/cm3 Boiling Point:753.7ºC at 760 mmHg Melting Point:N/A	6099-08-7
Cyclo(-Phe-Phe)	C₁₈H₁₈N₂O₂	Molecular Weight:294.35 Density:1.186g/cm3 Boiling Point:594.2ºC at 760 mmHg Melting Point:N/A	2862-51-3
3-O-BETA-D-GALACTO-PYRANOSYL-D-ARABINOSE	C₁₁H₂₀O₁₀	Molecular Weight:312.27100 Density:1.65g/cm3 Boiling Point:732.3ºC at 760 mmHg Melting Point:N/A	6057-48-3
Z-Pro-Pro-OH	C₁₈H₂₂N₂O₅	Molecular Weight:346.37800 Density:1.345g/cm3 Boiling Point:584.1ºC at 760 mmHg Melting Point:N/A	7360-23-8
NAPHTHOL AS-BI BETA-D-GALACTOPYRANOSIDE	C₂₄H₂₄BrNO₈	Molecular Weight:534.35300 Density:N/A Boiling Point:N/A Melting Point:N/A	51349-63-4
H-Ser-Ala-OH	C₆H₁₂N₂O₄	Molecular Weight:176.17000 Density:N/A Boiling Point:N/A Melting Point:N/A	6403-17-4
Z-Ala-Tyr-OH	C₂₀H₂₂N₂O₆	Molecular Weight:386.39800 Density:N/A Boiling Point:N/A Melting Point:N/A	13122-97-9
Fmoc-3-Aminomethylbenzoic acid	C₂₃H₁₉NO₄	Molecular Weight:373.401 Density:1.3±0.1 g/cm3 Boiling Point:631.6±48.0 °C at 760 mmHg Melting Point:N/A	155369-11-2
NAPHTHOL AS-BI N-ACETYL-BETA-D-GLUCOSAMINIDE	C₂₆H₂₇BrN₂O₈	Molecular Weight:575.40500 Density:1.59g/cm3 Boiling Point:783.8ºC at 760mmHg Melting Point:196ºC	3395-37-7
Tyrosylleucine	C₁₅H₂₂N₂O₄	Molecular Weight:294.35 Density:1.218g/cm3 Boiling Point:575.9ºC at 760 mmHg Melting Point:N/A	17355-10-1
H-β-Ala-Gly-OH	C₅H₁₀N₂O₃	Molecular Weight:146.14400 Density:1.267g/cm3 Boiling Point:448.1ºC at 760mmHg Melting Point:N/A	2672-88-0
(-)-DIBUTYL-D-TARTRATE	C₁₃H₁₄O₆	Molecular Weight:266.24700 Density:1.266g/cm3 Boiling Point:357.6ºC at 760mmHg Melting Point:74-76ºC(lit.)	38270-72-3
SODIUM (2S,3R,4S,5R,6R)-3,4,5-TRIHYDROXY-6-(HYDROXYMETHYL)TETRAHYDRO-2H-PYRAN-2-THIOLATE	C₆H₁₁NaO₅S	Molecular Weight:218.20300 Density:N/A Boiling Point:N/A Melting Point:145-150ºC dec.	42891-22-5
Z-Ser-Gly-OH	C₁₃H₁₆N₂O₆	Molecular Weight:296.27600 Density:N/A Boiling Point:N/A Melting Point:N/A	30735-20-7
N-1-Naphthylglutamine hydrate (1:1)	C₁₅H₁₈N₂O₄	Molecular Weight:290.314 Density:1.329g/cm3 Boiling Point:589.1ºC at 760 mmHg Melting Point:N/A	81012-91-1
1,3-Propanediamine dihydrochloride	C₃H₁₂Cl₂N₂	Molecular Weight:147.047 Density:0.867g/cm3 Boiling Point:135.5ºC at 760mmHg Melting Point:246-250 °C(lit.)	10517-44-9
Boc-Asp(OBzl)-OSu	C₂₀H₂₄N₂O₈	Molecular Weight:420.413 Density:1.3±0.1 g/cm3 Boiling Point:N/A Melting Point:98-102ºC	13798-75-9
Homocysteic acid	C₄H₉NO₅S	Molecular Weight:183.183 Density:1.6±0.1 g/cm3 Boiling Point:N/A Melting Point:273 °C	504-33-6
N-Desmethyl Prochlorperazine Dimaleate	C₂₇H₃₀ClN₃O₈S	Molecular Weight:592.06000 Density:N/A Boiling Point:N/A Melting Point:N/A	49780-18-9
2-AMINO-1-(4'-BENZYLOXYPHENYL)ETHANOL	C₁₅H₁₇NO₂	Molecular Weight:243.30100 Density:1.164g/cm3 Boiling Point:434.5ºC at 760 mmHg Melting Point:N/A	56443-72-2
12-oxo Stearic Acid methyl ester	C₁₉H₃₆O₃	Molecular Weight:312.48700 Density:0.911g/cm3 Boiling Point:178-180ºC/0.8 mmHg(lit.) Melting Point:46-48ºC(lit.)	2380-27-0
Iso Desloratadine	C₁₉H₁₉ClN₂	Molecular Weight:310.82100 Density:N/A Boiling Point:N/A Melting Point:N/A	183198-49-4
Rifamycin,3-[(1-piperazinylimino)methyl]-	C₄₂H₅₆N₄O₁₂	Molecular Weight:808.91400 Density:1.35g/cm3 Boiling Point:N/A Melting Point:N/A	13292-45-0
9-Methoxy-1,3-dimethyl-12-thioxopyrido[1',2':3,4]imidazo[1,2-a]benzimidazol-2(12H)-one	C₁₆H₁₃N₃O₂S	Molecular Weight:311.358 Density:1.5±0.1 g/cm3 Boiling Point:469.1±55.0 °C at 760 mmHg Melting Point:N/A	125656-83-9
Promethazine hcl	C₂₀H₂₉ClN₂O₅	Molecular Weight:412.90800 Density:N/A Boiling Point:487.8ºC at 760mmHg Melting Point:195-197ºC	132539-07-2
2,4-Dinitro-1H-imidazole	C₃H₂N₄O₄	Molecular Weight:158.07200 Density:1.867g/cm3 Boiling Point:503.1ºC at 760 mmHg Melting Point:263 - 265°C	5213-49-0
GTS-21	C₁₉H₂₂Cl₂N₂O₂	Molecular Weight:381.30 Density:1.1±0.1 g/cm3 Boiling Point:485.6±45.0 °C at 760 mmHg Melting Point:216-217℃ (decomposition)	156223-05-1
METHYL 3-AMINO-4,5-DIHYDRONAPHTHO[1,2-B]THIOPHENE-2-CARBOXYLATE	C₁₄H₁₃NO₂S	Molecular Weight:259.32400 Density:1.324g/cm3 Boiling Point:475.7ºC at 760 mmHg Melting Point:N/A	691393-99-4
3-Bromo-7-chloro-1H-pyrazolo[4,3-d]pyrimidine	C₅H₂BrClN₄	Molecular Weight:233.453 Density:2.1±0.1 g/cm3 Boiling Point:405.4±40.0 °C at 760 mmHg Melting Point:N/A	68510-70-3
4-(4-aminobutyl)phenol	C₁₀H₁₅NO	Molecular Weight:165.23200 Density:1.05 g/cm3 Boiling Point:315.275ºC at 760 mmHg Melting Point:N/A	22205-09-0
4-Nitroisoindolin-1-one	C₈H₆N₂O₃	Molecular Weight:178.14500 Density:1.45g/cm3 Boiling Point:488.773ºC at 760 mmHg Melting Point:N/A	366452-97-3