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
5-amino-4-cyano-1-(4-fluorophenyl)pyrazole	C₁₀H₇FN₄	Molecular Weight:202.18800 Density:1.36g/cm3 Boiling Point:394.1ºC at 760 mmHg Melting Point:164-165°C	51516-70-2
5-Bromo-indan-2-ylamine	C₉H₁₀BrN	Molecular Weight:212.08600 Density:N/A Boiling Point:N/A Melting Point:N/A	73536-88-6
6-Bromoisoindolin-1-one	C₈H₆BrNO	Molecular Weight:212.043 Density:1.7±0.1 g/cm3 Boiling Point:431.7±45.0 °C at 760 mmHg Melting Point:N/A	675109-26-9
6-Chloro-3-iodo-2-pyridinamine	C₅H₄ClIN₂	Molecular Weight:254.456 Density:2.1±0.1 g/cm3 Boiling Point:324.7±42.0 °C at 760 mmHg Melting Point:N/A	800402-06-6
6-CHLORO-7-FLUORO-2,3-DIHYDRO-1H-INDEN-1-ONE	C₉H₆ClFO	Molecular Weight:184.59500 Density:N/A Boiling Point:N/A Melting Point:N/A	1179361-81-9
N,N'-DICYCLOHEXYLCARBODIIMIDE METHIODIDE	C₁₄H₂₅IN₂	Molecular Weight:348.26600 Density:N/A Boiling Point:N/A Melting Point:N/A	36049-77-1
phenyl(trichloromethyl)mercury	C₇H₅Cl₃Hg	Molecular Weight:396.06400 Density:N/A Boiling Point:N/A Melting Point:111-114ºC	3294-57-3
(4Z)-4-Nonene-1-ol	C₉H₁₈O	Molecular Weight:142.23900 Density:0.845 Boiling Point:217ºC Melting Point:N/A	59499-28-4
(E)-4-Nonenoic acid	C₉H₁₆O₂	Molecular Weight:156.22200 Density:N/A Boiling Point:N/A Melting Point:N/A	35329-50-1
(E)-4-Undecenoic acid	C₁₁H₂₀O₂	Molecular Weight:184.27500 Density:N/A Boiling Point:N/A Melting Point:N/A	35329-55-6
(E)-4-Heptenoic acid	C₇H₁₂O₂	Molecular Weight:128.16900 Density:0.968g/cm3 Boiling Point:221.9ºC at 760mmHg Melting Point:N/A	51193-78-3
(Z)-4-Octenal	C₈H₁₄O	Molecular Weight:126.19600 Density:0.832g/cm3 Boiling Point:174.6ºC at 760mmHg Melting Point:N/A	39924-26-0
(Z)-4-Octenoic acid	C₈H₁₄O₂	Molecular Weight:142.19600 Density:0.955g/cm3 Boiling Point:239.9ºC at 760mmHg Melting Point:N/A	18654-81-4
2-(diethoxymethyl)thiophene	C₉H₁₄O₂S	Molecular Weight:186.27100 Density:1.066g/cm3 Boiling Point:219.432ºC at 760 mmHg Melting Point:N/A	13959-97-2
2-propionyl-2-thiazoline	C₆H₉NOS	Molecular Weight:143.20700 Density:1.23g/cm3 Boiling Point:239.4ºC at 760 mmHg Melting Point:N/A	29926-42-9
3-(Allylthio)propionic acid ethyl ester	C₈H₁₄O₂S	Molecular Weight:174.26100 Density:N/A Boiling Point:N/A Melting Point:N/A	23246-24-4
3-P-TOLYLSULFANYL-PROPIONIC ACID ETHYL ESTER	C₁₂H₁₆O₂S	Molecular Weight:224.31900 Density:1.09g/cm3 Boiling Point:321.3ºC at 760 mmHg Melting Point:56-57ºC	85169-05-7
(E)-4-Nonenal	C₉H₁₆O	Molecular Weight:140.22300 Density:0.834g/cm3 Boiling Point:196.4ºC at 760mmHg Melting Point:N/A	2277-16-9
bis-(p-Chlorobenzyl)disulfide	C₁₄H₁₂Cl₂S₂	Molecular Weight:315.28100 Density:1.342g/cm3 Boiling Point:420.9ºC at 760mmHg Melting Point:59ºC	23566-17-8
Ethyl 4-methyl-4-pentenoate	C₈H₁₄O₂	Molecular Weight:142.196 Density:0.9±0.1 g/cm3 Boiling Point:188.7±0.0 °C at 760 mmHg Melting Point:N/A	4911-54-0
Methyl 2-oxo-2H-pyran-3-carboxylate	C₇H₆O₄	Molecular Weight:154.120 Density:1.3±0.1 g/cm3 Boiling Point:354.4±0.0 °C at 760 mmHg Melting Point:75-77ºC(lit.)	25991-27-9
5-Formyl-4-methylthiophene-2-boronic acid	C₆H₇BO₃S	Molecular Weight:169.99400 Density:1.34g/cm3 Boiling Point:404.2ºC at 760 mmHg Melting Point:118-120ºC	352530-25-7
Ethyl 2-pentynyl ether	C₇H₁₂O	Molecular Weight:112.17000 Density:0.864 Boiling Point:63-65ºC/20mm Melting Point:N/A	20635-10-3
(1R,2R)-1,2-Bis(2,4,6-trimethylphenyl)ethylenediamine	C₂₀H₂₈N₂	Molecular Weight:296.45000 Density:1.024g/cm3 Boiling Point:451.7ºC at 760 mmHg Melting Point:N/A	425615-42-5
Hexaamminecobalt(III) nitrate	CoH₁₈N₉O₉	Molecular Weight:347.13100 Density:1.804 Boiling Point:N/A Melting Point:300-304.2ºC(lit.)	10534-86-8
magnesium aluminate	Al₂H₂MgO₄	Molecular Weight:144.28200 Density:3.64 g/mL at 25 °C(lit.) Boiling Point:N/A Melting Point:2130 °C(lit.)	12068-51-8
vanadium oxide	O₁₃V₆	Molecular Weight:513.64100 Density:3.91 Boiling Point:N/A Melting Point:ca 1500℃	12037-42-2
COBALT TETRAFLUOROBORATE HEXAHYDRATE	B₂CoF₈H₁₂O₆	Molecular Weight:340.63400 Density:N/A Boiling Point:N/A Melting Point:70-80ºC	26490-63-1
Copper(II) tetrafluoroborate hexahydrate	B₂CuF₈H₁₂O₆	Molecular Weight:345.24700 Density:N/A Boiling Point:N/A Melting Point:N/A	72259-10-0
Pentanoic acid,2-(diethoxyphosphinyl)-, ethyl ester	C₁₁H₂₃O₅P	Molecular Weight:266.27100 Density:1.061g/cm3 Boiling Point:331.4ºC at 760mmHg Melting Point:N/A	35051-49-1
Tetra-n-hexylammonium perchlorate	C₂₄H₅₂ClNO₄	Molecular Weight:454.12700 Density:N/A Boiling Point:N/A Melting Point:110-113ºC	4656-81-9
3-Fluoro-5-iodoaniline	C₆H₅FIN	Molecular Weight:237.014 Density:2.0±0.1 g/cm3 Boiling Point:279.5±25.0 °C at 760 mmHg Melting Point:N/A	660-49-1
1-(Trifluoromethyl)-2-vinylbenzene	C₉H₇F₃	Molecular Weight:172.147 Density:1.2±0.1 g/cm3 Boiling Point:145.2±0.0 °C at 760 mmHg Melting Point:N/A	395-45-9
1-CHLORO-2,4,6-TRIS(TRIFLUOROMETHYL)BENZENE	C₉H₂ClF₉	Molecular Weight:316.55100 Density:1.567g/cm3 Boiling Point:137.5ºC at 760 mmHg Melting Point:N/A	444-38-2
perfluoro-2-methylpentane	C₆F₁₄	Molecular Weight:338.042 Density:1.7±0.1 g/cm3 Boiling Point:59.7±8.0 °C at 760 mmHg Melting Point:<-150ºC	355-04-4
fluoropentachloroacetone	C₃Cl₅FO	Molecular Weight:248.29500 Density:1.803g/cm3 Boiling Point:170.7ºC at 760mmHg Melting Point:N/A	2378-08-7
1,1,1-Trifluoroacetone oxime	C₃H₄F₃NO	Molecular Weight:127.06500 Density:1.32g/cm3 Boiling Point:96.3ºC at 760mmHg Melting Point:N/A	431-40-3
2-Fluoro-6-(trifluoromethyl)benzaldehyde	C₈H₄F₄O	Molecular Weight:192.110 Density:1.4±0.1 g/cm3 Boiling Point:189.4±40.0 °C at 760 mmHg Melting Point:155-157°C	60611-24-7
3,4-DIFLUORO-5-NITROBENZOTRIFLUORIDE	C₇H₂F₅NO₂	Molecular Weight:227.08800 Density:1.585g/cm3 Boiling Point:195.3ºC at 760 mmHg Melting Point:N/A	101646-01-9
2,2,3,3,3-pentafluoropropyl acrylate	C₆H₅F₅O₂	Molecular Weight:204.09500 Density:1.32 g/mL at 25 °C(lit.) Boiling Point:50 °C100 mm Hg(lit.) Melting Point:49-50°C	356-86-5
Potassium 2,2,2-trifluoroacetate	C₂F₃KO₂	Molecular Weight:152.114 Density:1.49 g/mL(lit.) Boiling Point:72.2ºC at 760 mmHg Melting Point:140-142 °C(lit.)	2923-16-2
3-Bromo-3,3-difluoro-1-propene	C₃H₃BrF₂	Molecular Weight:156.957 Density:1.6±0.1 g/cm3 Boiling Point:42.0±0.0 °C at 760 mmHg Melting Point:53-54°C	420-90-6
3,5-Difluoro-2-hydroxyacetophenone	C₈H₆F₂O₂	Molecular Weight:172.129 Density:1.3±0.1 g/cm3 Boiling Point:220.8±35.0 °C at 760 mmHg Melting Point:53-55°C	140675-42-9
4-Cyano-2,3-difluorophenol	C₇H₃F₂NO	Molecular Weight:155.102 Density:1.5±0.1 g/cm3 Boiling Point:260.8±40.0 °C at 760 mmHg Melting Point:145-147ºC	126162-38-7
4-Amino-3-(trifluoromethoxy)benzoic acid	C₈H₆F₃NO₃	Molecular Weight:221.133 Density:1.5±0.1 g/cm3 Boiling Point:303.2±42.0 °C at 760 mmHg Melting Point:168-169ºC	175278-22-5
DL-4-FluoroglutaMic acid	C₅H₈FNO₄	Molecular Weight:165.12000 Density:1.498 g/cm3 Boiling Point:342.4ºC at 760 mmHg Melting Point:185°C (dec.)	2708-77-2
2,3,5,6-TETRAFLUORO-4-(TRIFLUOROMETHYL)PHENOL	C₇HF₇O	Molecular Weight:234.07100 Density:1.713 g/mL at 25 °C(lit.) Boiling Point:163-164 °C(lit.) Melting Point:25°C	2787-79-3
2-Triflnoromethoxybenzyl cyanide	C₉H₆F₃NO	Molecular Weight:201.14500 Density:1.28 g/mL at 25 °C(lit.) Boiling Point:222-223 °C(lit.) Melting Point:N/A	137218-25-8
(R)-3-CHLORO-PYRROLIDINE	C₆H₁₂BrN	Molecular Weight:178.07000 Density:N/A Boiling Point:N/A Melting Point:N/A	1011407-68-3
3-Chloromethyl-pyrrolidine	C₅H₁₀ClN	Molecular Weight:119.59300 Density:1.020 g/cm3 Boiling Point:290 °C at 760 mmHg Melting Point:N/A	876509-14-7