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
2,6-dimethoxypyridine-3-carbaldehyde	C₈H₉NO₃	Molecular Weight:167.16200 Density:1.174g/cm3 Boiling Point:277.3ºC at 760mmHg Melting Point:68-72ºC	58819-72-0
2-Bromo-5-fluoroisonicotinaldehyde	C₆H₃BrFNO	Molecular Weight:203.99700 Density:N/A Boiling Point:251.7±35.0°C at 760 mmHg Melting Point:N/A	1005291-43-9
5,5′-dibromo-2,2′-bipyridine	C₁₀H₆Br₂N₂	Molecular Weight:313.976 Density:1.8±0.1 g/cm3 Boiling Point:357.7±37.0 °C at 760 mmHg Melting Point:228 °C	15862-18-7
2-Fluoro-4-methylpyridine-5-boronic	C₆H₇BFNO₂	Molecular Weight:154.935 Density:1.3±0.1 g/cm3 Boiling Point:331.6±52.0 °C at 760 mmHg Melting Point:N/A	1072944-18-3
5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2'-bithiophene	C₁₄H₁₇BO₂S₂	Molecular Weight:292.225 Density:1.2±0.1 g/cm3 Boiling Point:406.1±35.0 °C at 760 mmHg Melting Point:35.5-38.0ºC	479719-88-5
3-Chloro-2-(4-methylpiperazin-1-yl)pyridine	C₁₀H₁₄ClN₃	Molecular Weight:211.69100 Density:N/A Boiling Point:N/A Melting Point:N/A	87394-57-8
5-Formylfuran-3-boronic acid pinacol ester	C₁₁H₁₅BO₄	Molecular Weight:222.045 Density:1.1±0.1 g/cm3 Boiling Point:338.1±27.0 °C at 760 mmHg Melting Point:N/A	846023-58-3
4-Bromo-N-phenylaniline	C₁₂H₁₀BrN	Molecular Weight:248.118 Density:1.4±0.1 g/cm3 Boiling Point:340.7±25.0 °C at 760 mmHg Melting Point:85-89ºC	54446-36-5
1-(2-BROMO-1-PHENYL-ETHYL)-2-CHLORO-BENZENE	C₁₂H₁₆BrN	Molecular Weight:254.16600 Density:1.323g/cm3 Boiling Point:299.1ºC at 760mmHg Melting Point:N/A	1459-22-9
N-Dodecylboronic Acid	C₁₂H₂₇BO₂	Molecular Weight:214.15300 Density:0.879g/cm3 Boiling Point:329.8ºC at 760mmHg Melting Point:91-93ºC	3088-79-7
5-Bromo-2-chloro-4-(dimethylamino)pyrimidine	C₆H₇BrClN₃	Molecular Weight:236.49700 Density:1.665g/cm3 Boiling Point:333ºC at 760mmHg Melting Point:N/A	57054-86-1
2-Chloro-4-methylpyridine-5-boronic acid	C₆H₇BClNO₂	Molecular Weight:171.38900 Density:1.347g/cm3 Boiling Point:359.17ºC at 760 mmHg Melting Point:105-107ºC	913836-08-5
2-Cyanopyridine-3-boronic acid neopentyl glycol ester	C₁₁H₁₃BN₂O₂	Molecular Weight:216.04400 Density:N/A Boiling Point:N/A Melting Point:N/A	868944-75-6
5-Bromo-2-fluorophenylboronic acid pinacol ester	C₁₂H₁₅BBrFO₂	Molecular Weight:300.96000 Density:N/A Boiling Point:N/A Melting Point:N/A	942069-51-4
4-Chloro-2,5-bis(5,5-dimethyl-1,3,2-dioxaborinan-2-yl)benzonitrile	C₁₇H₂₂B₂ClNO₄	Molecular Weight:361.43600 Density:N/A Boiling Point:N/A Melting Point:N/A	1072944-28-5
3,5-Difluoroisonicotinic acid	C₆H₃F₂NO₂	Molecular Weight:159.090 Density:1.5±0.1 g/cm3 Boiling Point:316.9±37.0 °C at 760 mmHg Melting Point:N/A	903522-29-2
1-(4-Bromobenzyl)-4-methylpiperazine	C₁₂H₁₇BrN₂	Molecular Weight:269.181 Density:1.3±0.1 g/cm3 Boiling Point:325.3±27.0 °C at 760 mmHg Melting Point:N/A	368879-17-8
4-Fluoro-3-(trifluoroMethyl)phenylboronic acid pinacol ester	C₁₃H₁₅BF₄O₂	Molecular Weight:290.06200 Density:1.20±0.1 g/cm3 Boiling Point:N/A Melting Point:N/A	445303-14-0
4-(S-Acetylthio)benzaldehyde	C₉H₈O₂S	Molecular Weight:180.22400 Density:N/A Boiling Point:N/A Melting Point:N/A	28130-89-4
Purpurin 18	C₃₃H₃₂N₄O₅	Molecular Weight:564.631 Density:1.3±0.1 g/cm3 Boiling Point:1046.1±65.0 °C at 760 mmHg Melting Point:N/A	25465-77-4
2,6-ditert-butyl-4-hydroxy-4-methylcyclohexa-2,5-dien-1-one	C₁₅H₂₄O₂	Molecular Weight:236.35000 Density:1.012g/cm3 Boiling Point:339.3ºC at 760 mmHg Melting Point:110-112 °C (lit.)	10396-80-2
tert-Butyl 4-(4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperazine-1-carboxylate	C₂₁H₃₄BN₃O₄	Molecular Weight:403.32300 Density:N/A Boiling Point:N/A Melting Point:N/A	1073355-13-1
(Cyclohexylmethyl)boronic acid	C₇H₁₅BO₂	Molecular Weight:142.00400 Density:N/A Boiling Point:N/A Melting Point:N/A	27762-64-7
5,10,15,20-TETRAKIS(2,6-DICHLOROPHENYL)PORPHINE	C₄₄H₂₂Cl₈N₄	Molecular Weight:890.29600 Density:N/A Boiling Point:N/A Melting Point:N/A	32350-86-0
(7-borono-9,9-diheptylfluoren-2-yl)boronic acid	C₂₇H₄₀B₂O₄	Molecular Weight:450.22600 Density:N/A Boiling Point:N/A Melting Point:N/A	916336-19-1
5-Bromobenzothiazole	C₇H₄BrNS	Molecular Weight:214.082 Density:1.7±0.1 g/cm3 Boiling Point:291.5±13.0 °C at 760 mmHg Melting Point:N/A	768-11-6
1-(3-Bromobenzyl)-4-methylpiperazine	C₁₂H₁₇BrN₂	Molecular Weight:269.181 Density:1.3±0.1 g/cm3 Boiling Point:325.3±27.0 °C at 760 mmHg Melting Point:N/A	91560-85-9
2-(3,3-diethoxyprop-1-enyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	C₁₃H₂₅BO₄	Molecular Weight:256.14600 Density:0.96g/cm3 Boiling Point:278.9ºC at 760mmHg Melting Point:N/A	153737-25-8
2-(3-FLUORO-4-(TRIFLUOROMETHYL)PHENYL)-4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLANE	C₁₃H₁₅BF₄O₂	Molecular Weight:290.06200 Density:N/A Boiling Point:N/A Melting Point:N/A	445303-67-3
N-(4-bromophenyl)methanesulfonamide	C₇H₈BrNO₂S	Molecular Weight:250.11300 Density:1.711g/cm3 Boiling Point:333ºC at 760 mmHg Melting Point:137-141ºC	4284-50-8
3-(Dihydroxyboryl)-2-fluorobenzoic acid	C₇H₆BFO₄	Molecular Weight:183.930 Density:1.5±0.1 g/cm3 Boiling Point:423.0±55.0 °C at 760 mmHg Melting Point:N/A	1072952-09-0
4-Carboxyfuran-2-boronic acid pinacol ester	C₁₁H₁₅BO₅	Molecular Weight:238.04500 Density:N/A Boiling Point:N/A Melting Point:N/A	1073354-94-5
1-(5-bromo-4-methylpyridin-2-yl)piperazine	C₁₀H₁₄BrN₃	Molecular Weight:256.14200 Density:N/A Boiling Point:N/A Melting Point:N/A	944582-93-8
9,9-Dioctylfluorene-2,7-diboronic acid	C₂₉H₄₄B₂O₄	Molecular Weight:478.279 Density:1.1±0.1 g/cm3 Boiling Point:670.8±65.0 °C at 760 mmHg Melting Point:158-162ºC(lit.)	258865-48-4
2-Cyano-4-fluorophenylboronic acid pinacol ester	C₁₃H₁₅BFNO₂	Molecular Weight:247.07300 Density:N/A Boiling Point:N/A Melting Point:N/A	461451-63-8
Titanium(IV) isobutoxide	C₁₆H₃₆O₄Si	Molecular Weight:320.54000 Density:1.02 Boiling Point:141ºC/1mmHg Melting Point:30-31ºC	681-98-1
triethoxy-p-tolylsilane 97	C₁₃H₂₂O₃Si	Molecular Weight:254.39700 Density:0.986 g/mL at 25ºC(lit.) Boiling Point:104-106ºC1.8 mm Hg(lit.) Melting Point:N/A	18412-57-2
4-(Triethoxysilyl)pyridine	C₁₁H₁₉NO₃Si	Molecular Weight:241.359 Density:1.0±0.1 g/cm3 Boiling Point:259.8±13.0 °C at 760 mmHg Melting Point:N/A	166262-04-0
N-(3-METHACRYLOXY-2-HYDROXYPROPYL)-3-AMINOPROPYLTRIETHOXYSILANE: 50 IN ETHANOL	C₁₄H₃₂O₅Si₃	Molecular Weight:364.657 Density:1.0±0.1 g/cm3 Boiling Point:362.1±52.0 °C at 760 mmHg Melting Point:N/A	69861-02-5
Trichloro(3,3-dimethylbutyl)silane	C₆H₁₃Cl₃Si	Molecular Weight:219.612 Density:1.1±0.1 g/cm3 Boiling Point:182.7±9.0 °C at 760 mmHg Melting Point:N/A	105732-02-3
nonafluorohexyltriethoxysilane	C₁₂H₁₉F₉O₃Si	Molecular Weight:410.349 Density:1.2±0.1 g/cm3 Boiling Point:241.5±40.0 °C at 760 mmHg Melting Point:N/A	102390-98-7
Boric acid (H3BO3),tripentyl ester	C₁₅H₃₃BO₃	Molecular Weight:272.23200 Density:0.858g/cm3 Boiling Point:63ºC 0mm Melting Point:180ºC (dec.)	621-78-3
Calcium bis(2-methylacrylate)	C₈H₁₀CaO₄	Molecular Weight:210.241 Density:N/A Boiling Point:160.5ºC at 760 mmHg Melting Point:>160ºC	16809-88-4
amylmethyldichlorosilane	C₆H₁₄Cl₂Si	Molecular Weight:185.167 Density:1.0±0.1 g/cm3 Boiling Point:171.0±8.0 °C at 760 mmHg Melting Point:164-166ºC	13682-99-0
Chloro(dimethyl)(2,4,4-trimethylpentyl)silane	C₁₀H₂₃ClSi	Molecular Weight:206.828 Density:0.9±0.1 g/cm3 Boiling Point:213.9±9.0 °C at 760 mmHg Melting Point:N/A	79957-95-2
chloromethyldimethylsilane	C₃H₉ClSi	Molecular Weight:108.64200 Density:0.894 g/mL at 25 °C(lit.) Boiling Point:81.6ºC at 760mmHg Melting Point:<0ºC	3144-74-9
3-[3-(Trimethoxysilyl)propoxy]aniline	C₁₂H₂₁NO₄Si	Molecular Weight:271.385 Density:1.1±0.1 g/cm3 Boiling Point:344.1±22.0 °C at 760 mmHg Melting Point:N/A	55648-29-8
2-(4-CHLOROSULPHONYLPHENYL)ETHYLTRIMETHOXYSILANE50 IN METHYLENE CHLORIDE	C₁₁H₁₇ClO₅SSi	Molecular Weight:324.853 Density:1.2±0.1 g/cm3 Boiling Point:348.3±35.0 °C at 760 mmHg Melting Point:N/A	126519-89-9
1,3-Bis[3-(triethoxysilyl)propyl]thiourea	C₁₉H₄₄N₂O₆SSi₂	Molecular Weight:484.798 Density:1.0±0.1 g/cm3 Boiling Point:463.5±55.0 °C at 760 mmHg Melting Point:N/A	69952-89-2
3-(Triethoxysilyl)pyridine	C₁₁H₁₉NO₃Si	Molecular Weight:241.359 Density:1.0±0.1 g/cm3 Boiling Point:259.8±13.0 °C at 760 mmHg Melting Point:N/A	129663-08-7