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
Mc-Val-Cit-PABC-PNP	C₃₅H₄₃N₇O₁₁	Molecular Weight:737.756 Density:1.3±0.1 g/cm3 Boiling Point:1034.5±65.0 °C at 760 mmHg Melting Point:N/A	159857-81-5
4-(8-Fluoro-3,4,5,6-tetrahydro-6-oxo-1H-azepino[5,4,3-cd]indol-2-yl)benzaldehyde	C₁₈H₁₃FN₂O₂	Molecular Weight:308.306 Density:1.4±0.1 g/cm3 Boiling Point:667.2±55.0 °C at 760 mmHg Melting Point:N/A	283173-84-2
1-Propyl-2-pyrrolidinone	C₇H₁₃NO	Molecular Weight:127.184 Density:1.0±0.1 g/cm3 Boiling Point:226.5±9.0 °C at 760 mmHg Melting Point:N/A	3470-99-3
Propanoicacid, 3-chloro-2,2-bis(chloromethyl)-	C₅H₇Cl₃O₂	Molecular Weight:205.46700 Density:1.468g/cm3 Boiling Point:262.7ºC at 760mmHg Melting Point:N/A	17831-70-8
p-Toluenesulfonylsemicarbazide	C₈H₁₁N₃O₃S	Molecular Weight:229.256 Density:1.4±0.1 g/cm3 Boiling Point:N/A Melting Point:N/A	10396-10-8
2,4-Dibromo-1-nitrobenzene	C₆H₃Br₂NO₂	Molecular Weight:280.901 Density:2.1±0.1 g/cm3 Boiling Point:270.4±20.0 °C at 760 mmHg Melting Point:N/A	51686-78-3
3-(2,3-Dihydro-1-benzofuran-5-yl)propanoic acid	C₁₁H₁₂O₃	Molecular Weight:192.211 Density:1.3±0.1 g/cm3 Boiling Point:355.2±11.0 °C at 760 mmHg Melting Point:95-97ºC	215057-28-6
N,S-DIACETYL-L-CYSTEINE METHYL ESTER	C₈H₁₃NO₄S	Molecular Weight:219.25800 Density:1.208g/cm3 Boiling Point:379.4ºC at 760mmHg Melting Point:97-100ºC(lit.)	19547-88-7
5-(4-chlorobutyl)-1h-tetrazole	C₅H₉ClN₄	Molecular Weight:160.60500 Density:N/A Boiling Point:N/A Melting Point:N/A	174769-79-0
2-Bromo-4,5-dimethoxybenzyl bromide	C₉H₁₀Br₂O₂	Molecular Weight:309.98300 Density:1.693g/cm3 Boiling Point:320.637ºC at 760 mmHg Melting Point:84.0-85.5 °C	53207-00-4
5-Cyano-2-fluoro-3-picoline	C₇H₅FN₂	Molecular Weight:136.126 Density:1.2±0.1 g/cm3 Boiling Point:255.2±35.0 °C at 760 mmHg Melting Point:N/A	261625-67-6
5-Fluoro-7-Methyl Isatin	C₉H₆FNO₂	Molecular Weight:179.14800 Density:1.399g/cm3 Boiling Point:N/A Melting Point:N/A	749240-57-1
5-(TERT-BUTYL)-2-METHOXY-1,3-DINITROBENZENE	C₁₁H₁₄N₂O₅	Molecular Weight:254.23900 Density:1.247 g/cm3 Boiling Point:347.5ºC at 760 mmHg Melting Point:97-101ºC(lit.)	77055-30-2
2-Trifluoromethyl-5-Fluorobenzyl Chloride	C₈H₅ClF₄	Molecular Weight:212.57200 Density:1.372g/cm3 Boiling Point:170.5ºC at 760 mmHg Melting Point:N/A	832113-94-7
hydrochloric acid 1,4-dioxane	C₄H₉ClO₂	Molecular Weight:124.56600 Density:N/A Boiling Point:N/A Melting Point:N/A	64990-51-8
1-(cyclohexylmethyl)piperidin-4-one	C₁₂H₂₁NO	Molecular Weight:195.30100 Density:N/A Boiling Point:N/A Melting Point:N/A	64306-76-9
1-O-methyl-2,3,5-tri-O-benzyl-β-D-ribofuranoside	C₂₇H₃₀O₅	Molecular Weight:434.52400 Density:N/A Boiling Point:N/A Melting Point:N/A	79083-29-7
3-carboxypropyl disulfide	C₈H₁₄O₄S₂	Molecular Weight:238.32400 Density:1.34g/cm3 Boiling Point:36/37/38 Melting Point:108-110 °C(lit.)	2906-60-7
Thiol-C9-PEG7	C₂₃H₄₈O₇S	Molecular Weight:468.68800 Density:1.023g/cm3 Boiling Point:550.4ºC at 760mmHg Melting Point:N/A	130727-44-5
N2,N2-Bis(carboxymethyl)-L-lysine	C₁₀H₁₈N₂O₆	Molecular Weight:262.260 Density:1.4±0.1 g/cm3 Boiling Point:537.8±50.0 °C at 760 mmHg Melting Point:N/A	160369-83-5
Stylopine	C₁₉H₁₇NO₄	Molecular Weight:323.34300 Density:N/A Boiling Point:N/A Melting Point:N/A	84-39-9
mercuric bromide	Br₂Hg	Molecular Weight:360.39800 Density:6.1 Boiling Point:322 °C(lit.) Melting Point:236 °C(lit.)	7789-47-1
Crocein Scarlet 7B	C₂₄H₁₈N₄Na₂O₇S₂	Molecular Weight:584.53200 Density:N/A Boiling Point:N/A Melting Point:181-188℃	6226-76-2
Strontium chloride hexahydrate	Cl₂H₁₂O₆Sr	Molecular Weight:266.61800 Density:1,93 g/cm3 Boiling Point:1250 °C Melting Point:115 °C(lit.)	10025-70-4
Para Red	C₁₆H₁₁N₃O₃	Molecular Weight:293.27700 Density:1.35g/cm3 Boiling Point:489.5ºC at 760 mmHg Melting Point:248-252 °C	6410-10-2
3-Amino-7-(methylamino)phenothiazin-5-ium chloride	C₁₃H₁₂ClN₃S	Molecular Weight:277.77 Density:N/A Boiling Point:385.1ºC at 760 mmHg Melting Point:N/A	531-57-7
3-noradamantanecarboxylic acid	C₁₀H₁₄O₂	Molecular Weight:166.21700 Density:1.291g/cm3 Boiling Point:288ºC at 760mmHg Melting Point:104-108 °C	16200-53-6
Ethyl eosin	C₂₂H₁₁Br₄KO₅	Molecular Weight:714.03400 Density:2.18g/cm3 Boiling Point:661.5ºC at 760 mmHg Melting Point:>200℃	6359-05-3
Magnesium bis(dodecyl sulfate)	C₂₄H₅₀MgO₈S₂	Molecular Weight:555.084 Density:1.059g/cm3 Boiling Point:N/A Melting Point:N/A	3097-08-3
iron(3+),tribenzoate	C₂₁H₁₅FeO₆	Molecular Weight:419.18500 Density:N/A Boiling Point:249.3ºC at 760mmHg Melting Point:N/A	14534-87-3
N,N'-ethylenedi-o-toluidine	C₁₆H₂₀N₂	Molecular Weight:240.34300 Density:1.083g/cm3 Boiling Point:434.2ºC at 760mmHg Melting Point:70-73ºC	94-92-8
8-[(1R)-1-Hydroxy-2-[[2-(4-methoxyphenyl)-1,1-dimethylethyl]amino]ethyl]-6-(phenylmethoxy)-2H-1,4-benzoxazin-3(4H)-one	C₂₈H₃₂N₂O₅	Molecular Weight:476.56400 Density:1.205±0.06 g/cm3 (20 ºC 760 Torr) Boiling Point:N/A Melting Point:N/A	869478-13-7
[(3,4-Difluorophenyl)ethynyl](trimethyl)silane	C₁₁H₁₂F₂Si	Molecular Weight:210.295 Density:1.0±0.1 g/cm3 Boiling Point:206.4±40.0 °C at 760 mmHg Melting Point:N/A	866683-38-7
(F-9 (M-6))	C₁₇H₁₈N₄O₇	Molecular Weight:390.34700 Density:N/A Boiling Point:N/A Melting Point:N/A	90822-24-5
5-chloro-3-ethyl-1,2,4-thiadiazole	C₄H₅ClN₂S	Molecular Weight:148.614 Density:1.3±0.1 g/cm3 Boiling Point:234.1±23.0 °C at 760 mmHg Melting Point:N/A	101258-23-5
4-(2-Bromophenyl)-1,3-thiazol-2-amine	C₉H₇BrN₂S	Molecular Weight:255.134 Density:1.6±0.1 g/cm3 Boiling Point:395.1±17.0 °C at 760 mmHg Melting Point:N/A	103965-99-7
4-(4-hydroxyphenyl)-5-methyl-1,3-hiazol-2-amine	C₁₀H₁₁N₃O	Molecular Weight:189.21400 Density:N/A Boiling Point:N/A Melting Point:N/A	103037-99-6
2-chloro-4-propylacetophenone	C₁₁H₁₃ClO	Molecular Weight:196.67300 Density:1.082g/cm3 Boiling Point:300.1ºC at 760mmHg Melting Point:N/A	105443-49-0
HC Blue 12	C₁₂H₂₀ClN₃O₄	Molecular Weight:305.75800 Density:N/A Boiling Point:N/A Melting Point:N/A	132885-85-9
1-(Methoxymethyl)-naphthalene	C₁₂H₁₂O	Molecular Weight:172.22300 Density:1.058g/cm3 Boiling Point:270.5ºC at 760mmHg Melting Point:N/A	5903-23-1
1h-benzimidazole-2-sulfonic acid	C₇H₆N₂O₃S	Molecular Weight:198.19900 Density:1.681g/cm3 Boiling Point:N/A Melting Point:116-119 °C(lit.)	40828-54-4
4-(3-Chloropropyl)-1-piperazine ethanol	C₉H₁₉ClN₂O	Molecular Weight:206.713 Density:1.1±0.1 g/cm3 Boiling Point:323.0±32.0 °C at 760 mmHg Melting Point:N/A	57227-28-8
1-(4-bromo-3-nitrophenyl)propan-1-one	C₉H₈BrNO₃	Molecular Weight:258.06900 Density:1.559g/cm3 Boiling Point:291.2ºC at 760mmHg Melting Point:N/A	101860-83-7
1-(3-chloropropyl)piperidine	C₈H₁₆ClN	Molecular Weight:161.672 Density:1.0±0.1 g/cm3 Boiling Point:217.3±23.0 °C at 760 mmHg Melting Point:N/A	1458-63-5
N-(Phenylacetyl)guanosine	C₁₈H₁₉N₅O₆	Molecular Weight:401.373 Density:1.7±0.1 g/cm3 Boiling Point:N/A Melting Point:189ºC	132628-16-1
Methyl 2,3-dimethylbenzoate	C₁₀H₁₂O₂	Molecular Weight:164.20100 Density:1.027g/cm3 Boiling Point:233.9ºC at 760 mmHg Melting Point:N/A	15012-36-9
1-Dodecyl-4-iodobenzene	C₁₈H₂₉I	Molecular Weight:372.327 Density:1.2±0.1 g/cm3 Boiling Point:381.1±11.0 °C at 760 mmHg Melting Point:N/A	170698-90-5
2-propylsulfonylaniline	C₉H₁₃NO₂S	Molecular Weight:199.27000 Density:1.196g/cm3 Boiling Point:389.4ºC at 760mmHg Melting Point:N/A	76697-58-0
5-Bromo-4-(trifluoromethyl)thiazol-2-amine	C₄H₂BrF₃N₂S	Molecular Weight:247.036 Density:2.0±0.1 g/cm3 Boiling Point:273.0±35.0 °C at 760 mmHg Melting Point:N/A	136411-21-7
2-Bromo-4'-methylpropiophenone	C₁₀H₁₁BrO	Molecular Weight:227.098 Density:1.4±0.1 g/cm3 Boiling Point:273.2±15.0 °C at 760 mmHg Melting Point:75-77ºC	1451-82-7