2H-chromene

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Names

[ CAS No. ]:
254-04-6

[ Name ]:
2H-chromene

[Synonym ]:
Benzopyran
2H-Chromene
1,2-Benzopyran
3-Chromene
chromene
1,2-Chromene
1-benzopyran
2H-1-BENZOPYRAN

Chemical & Physical Properties

[ Density]:
1.095g/cm3

[ Boiling Point ]:
220.2ºC at 760mmHg

[ Molecular Formula ]:
C9H8O

[ Molecular Weight ]:
132.15900

[ Flash Point ]:
79.7ºC

[ Exact Mass ]:
132.05800

[ PSA ]:
9.23000

[ LogP ]:
2.09220

[ Vapour Pressure ]:
0.169mmHg at 25°C

[ Index of Refraction ]:
1.571

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
DJ2105000
CHEMICAL NAME :
2H-1-Benzopyran
CAS REGISTRY NUMBER :
254-04-6
BEILSTEIN REFERENCE NO. :
0109871
LAST UPDATED :
199803
DATA ITEMS CITED :
1
MOLECULAR FORMULA :
C9-H8-O
MOLECULAR WEIGHT :
132.17
WISWESSER LINE NOTATION :
T66 BO CHJ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
250 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
EJMCA5 European Journal of Medicinal Chemistry--Chimie Therapeutique. (Editions Scientifiques Elsevier, 29 rue Buffon, F-75005, Paris, France) V.9- 1974- Volume(issue)/page/year: 11,81,1976

Safety Information

[ HS Code ]:
2901299090

Synthetic Route

Click to get detail synthetic route

Customs

[ HS Code ]: 2901299090

[ Summary ]:
2901299090 unsaturated acyclic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%

Related Compounds

  • 4-vinyl-2H-chromene
  • 6-nitro-2H-chromene
  • 7-bromo-2H-chromene
  • 6-bromo-2H-chromene
  • 3-bromo-2H-chromene
  • 3-nitro-2H-chromene
  • 1-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutanecarbonyl]-4,4-difluoropiperidine-3-carboxylic acid
  • 3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[(3-fluoropropyl)(methyl)carbamoyl]propanoic acid
  • 4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-[(3-fluoropropyl)(methyl)carbamoyl]butanoic acid
  • rac-(1R,2S)-2-{[3-cyclopentyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]methyl}cyclopropane-1-carboxylic acid
  • 2-[(3-methylcyclohexyl)methyl]-2H-1,2,3-triazol-4-amine
  • 2-[3-cyclopentyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-(prop-2-yn-1-yl)propanamido]acetic acid
  • 3-[N-benzyl-3-cyclohexyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]propanoic acid
  • 1-[3-cyclohexyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoyl]azetidine-3-carboxylic acid
  • 1-[3-cyclopentyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoyl]azetidine-3-carboxylic acid
  • 1-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]-N-methylacetamido}cyclopropane-1-carboxylic acid