CAS mumber
91-64-5

Molecular formula
C9H6O2

SMILES
C1=CC=C2C(=C1)C=CC(=O)O2

Retention indicies (RI)

• DB5: 1431.0
• Carbowax: 2392.4

XLogP3-AA
1.4 Well soluble in MMB, DEP, TEC

Molecular weight
146.14 g/mol

Melting points

• 154 to 158 °F (NTP, 1992)
• 71 °C
• 71 °C
• 68-70 °C

Boiling points

• 568 °F at 760 mmHg (NTP, 1992)
• 301.71 °C
• 297.00 to 301.00 °C. @ 760.00 mm Hg
• 297-299 °C

Flash points

• 304 °F (NTP, 1992)
• 150 °C
• 150 °C

Solubilities

• less than 0.1 mg/mL at 63.5 °F (NTP, 1992)
• Soluble in ethanol; very soluble in ether and chloroform
• Freely soluble in oils
• Soluble in aqueous alkali, oxygenated and chlorinated solvents
• In chloroform 49.4 g/100 g @ 25 °C; in pyridine 87.7 g/100 g @ 20-25 °C
• In water, 1,900 mg/l @ 20 °C
• 1.9 mg/mL
• Solubility in water: poor

• coumarin
• 91-64-5
• 2H-Chromen-2-one
• 2H-1-Benzopyran-2-one
• cumarin
• 1,2-Benzopyrone
• chromen-2-one
• Rattex
• Coumarinic anhydride
• Tonka bean camphor
• Coumarine
• cis-o-Coumarinic acid lactone
• Coumarinic lactone
• o-Hydroxycinnamic acid lactone
• Benzo-alpha-pyrone
• o-Hydroxycinnamic lactone
• 2-Oxo-1,2-benzopyran
• Kumarin
• Benzo-a-pyrone
• 2H-Benzo(b)pyran-2-one
• 5,6-Benzo-2-pyrone
• 2H-1-Benzopyran, 2-oxo-
• Kumarin [Czech]
• o-Hydroxyzimtsaure-lacton
• 5,6-Benzo-alpha-pyrone
• 2H-Benzo[b]pyran-2-one
• Coumarinum
• 1-Benzopyran-2-one
• NCI C07103
• 103802-83-1
• Caswell No. 259C
• o-Coumaric acid lactone
• NSC 8774
• CCRIS 181
• cis-o-Coumaric acid anhydride
• chromenone
• EPA Pesticide Chemical Code 127301
• DTXSID7020348
• CHEBI:28794
• BRN 0383644
• HSDB 1623
• 2-oxo-2H-1-benzopyran
• o-Hydroxyzimtsaure-lacton [German]
• AI3-00753
• UNII-A4VZ22K1WT
• NSC-8774
• EINECS 202-086-7
• A4VZ22K1WT
• Nci-c07103
• MFCD00006850
• 2-Propenoic acid, 3-(2-hydroxyphenyl)-, delta-lactone
• 3-(2-Hydroxyphenyl)-2-propenoic delta-lactone
• Benzo-.alpha.-pyrone
• Cinnamic acid, o-hydroxy-, delta-lactone
• Coumarin (prohibited)
• NSC8774
• o-hydroxycinnamic acid delta-lactone
• CHEMBL6466
• 2-Propenoic acid, 3-(2-hydroxyphenyl)-delta-lactone
• DTXCID50348
• MLS000028741
• EC 202-086-7
• 5-17-10-00143 (Beilstein Handbook Reference)
• NCGC00091502-01
• Coumarin, >=98%
• SMR000059040
• COUMARIN (IARC)
• COUMARIN [IARC]
• COUMARIN (MART.)
• COUMARIN [MART.]
• 2h-chromene-2-one
• 2-Propenoic acid, 3-(2-hydroxyphenyl)-, d-lactone
• 2-Propenoic acid, 3-(2-hydroxyphenyl)-, .delta.-lactone
• benzopyranone
• coumarinac lactone
• CAS-91-64-5
• Coumarin [NF]
• COU
• 2H-Benzopyran-2-one
• SR-01000721887
• chromen-one
• a coumarin
• coumarin-
• d-lactone
• Venalot mono
• Coumarin Phenolic
• Rattex Rodenticide
• benzopyrylium olate
• Coumarin (DCF)
• Coumarin1513
• 1, 2-Benzopyrone
• a 1,2-benzopyrone
• Coumarin (Standard)
• Venalot mono (TN)
• Spectrum_001336
• ST023509
• COUMARIN [HSDB]
• Opera_ID_268
• 2H-Chromen-2-one #
• 3-(2-hydroxyphenyl)-
• COUMARIN [MI]
• 2H-1-benzopyran-2-on
• Spectrum2_000303
• Spectrum3_001772
• Spectrum4_001818
• Spectrum5_000555
• COUMARINUM [HPUS]
• bmse000077
• COUMARIN [WHO-DD]
• Epitope ID:114082
• SCHEMBL6252
• WLN: T66 BOVJ
• BSPBio_003263
• KBioGR_002460
• KBioSS_001816
• MLS001148422
• MLS002454395
• {2H-Benzo[b]pyran-2-one}
• BIDD:ER0667
• SPECTRUM1400208
• SPBio_000266
• Cinnamic acid, .delta.-lactone
• Coumarin, >=99% (HPLC)
• BDBM12342
• HY-N0709R
• KBio2_001816
• KBio2_004384
• KBio2_006952