Synonyms: 1,2-benzopyrone; 5,6-benzo-alpha-pyrone; Tonka bean camphor; Spectrum5_000555; 2-oxo-1,2-benzopy ran; bmse000077; Epitope ID:114082; 1,2-Benzopyrone, Cumarin; EC 202-086-7; AC1L18ZG; AC1Q6CR1; cis-O-coumaric acid lactone; SCHEMBL6252; Coumarinic anhydride; WLN: T66 BOVJ; BSPBio_003263; KBioGR_002460; KBioSS_001816; 5-17-10-00143 (Beilstein Handbook Reference); MLS001148422; MLS002454395; {2H-Benzo[b]pyran-2-one}; ARONIS24593; BIDD:ER0667; chromen-2-one; SPECTRUM1400208; SPBio_000266; Cinnamic acid, .delta.-lactone; Coumarin, >=99% (HPLC); DTXSID7020348; BDBM12342; KBio2_001816; KBio2_004384; KBio2_006952; KBio3_002764; Coumarine; ZINC74709; HMS1923M11; HMS2091E19; HMS2232H18; HMS3369L08; HMS3652B05; Pharmakon1600-01400208; HY-N0709; NSC-8774; Tox21_111141; Benzo-alpha-pyrone; Tox21_202427; Tox21_300057; ANW-75568; BBL009203; CCG-38580; NSC755852; RW2544; s4170; SBB000094; STK066167; cis-o-Coumarinic acid lactone; AKOS000120175; Tox21_111141_1; 2H-chromen-2-one (ACD/Name 4.0); CR-0048; CS-8148; DB04665; LS-1926; MCULE-5433669098; NE10460; NSC-755852; o-Hydroxycinnamic acid lactone; RTR-003307; SDCCGMLS-0066912.P001; TRA0051794; TRA0064405; KS-000046K1; NCGC00091502-02; NCGC00091502-03; NCGC00091502-04; NCGC00091502-05; NCGC00091502-06; o-Hydroxycinnamic lactone; NCGC00091502-07; NCGC00091502-08; NCGC00091502-09; NCGC00091502-11; NCGC00254092-01; NCGC00259976-01; AJ-10333; AN-24222; K669; NCI60_041938; 2-Oxo-1,2-benzopyran; R539; SC-19598; ZB002686; SBI-0061760.P002; AB1008368; DB-057267; Cinnamic acid, o-hydroxy-, .delta.-lactone; Coumarin, Vetec(TM) reagent grade, >=99%; FT-0606287; N1707; Coumarinic lactone; ST24028147; SW220278-1; 1930-EP2269987A1; 1930-EP2270018A1; 1930-EP2270895A2; 1930-EP2272828A1; 1930-EP2272972A1; 1930-EP2272973A1; 1930-EP2275409A1; 1930-EP2276085A1; coumarin; Kumarin; 1930-EP2277872A1; 1930-EP2278637A1; 1930-EP2284170A1; 1930-EP2284920A1; 1930-EP2287158A1; 1930-EP2292593A2; 1930-EP2295053A1; 1930-EP2295421A1; 1930-EP2298312A1; 1930-EP2298780A1; Benzo-a-pyrone; 1930-EP2298828A1; 1930-EP2299509A1; 1930-EP2299510A1; 1930-EP2299785A1; 1930-EP2301921A1; 1930-EP2305689A1; 1930-EP2305808A1; 1930-EP2306788A1; 1930-EP2306789A1; 1930-EP2308872A1; Kumarin [Czech]; 1930-EP2309584A1; 1930-EP2311842A2; 1930-EP2316829A1; 1930-EP2316974A1; 1930-EP2371810A1; 1930-EP2371812A1; A14543; BIM-0061760.0001; C05851; D07751; 2H-1-Benzopyran, 2-oxo-; 16253-EP2281563A1; 16253-EP2292593A2; 16253-EP2316459A1; 22856-EP2275469A1; 22856-EP2287159A1; 22856-EP2287940A1; 22856-EP2289965A1; 22856-EP2298774A1; 22856-EP2301926A1; 22856-EP2305808A1; 5,6-Benzo-2-pyrone; 22856-EP2315502A1; 30441-EP2284170A1; 30441-EP2311835A1; 45232-EP2311806A2; AB00375898_11; AB00375898_12; Coumarin, primary pharmaceutical reference standard; CU-01000013121-2; I14-6974; Q-100890; 5,6-Benzo-alpha-pyrone; SR-01000721887-2; SR-01000721887-3; BRD-K23913458-001-02-5; BRD-K23913458-001-13-2; Coumarin, certified reference material, TraceCERT(R); Propenoic acid, 3-(2-hydroxyphenyl)-, delta-lactone; Z57169486; Coumarin, European Pharmacopoeia (EP) Reference Standard; F3096-1712; 1,2-Benzopyrone; 1-Benzopyran-2-one; 2H-Chromen-2-one; 2H-Benzo(b)pyran-2-one; 2-Propenoic acid, 3-(2-hydroxyphenyl)-, .delta.-lactone; D3E956C4-9541-4F57-9435-7D915C38E19E; InChI=1/C9H6O2/c10-9-6-5-7-3-1-2-4-8(7)11-9/h1-6; Coumaric Acid; dihydrocoumarin; :coumarin; cumarin-; 2-chromenone; 2-Propenoic acid; Coumarin perfumery grade; 2H-Benzo[b]pyran-2-one; 2h-1-benzopirano-2-ona; Coumarin, 98% 250g; COUMARIN--PROHIBITED; CID323; Coumarin, 99% - 5G 5g; Coumarin, 99% - 1KG 1kg; C13H8O2; 2-Propenoic acid, .delta.-lactone; C9-H6-O2; Coumarin 99% for synthesis 250gm; 1-Benzopyran-2-one; AR-1I2727; c0395; ZINC00074709; ACN-047144; CS-T-13392; C030123; 97549-54-7; Caswell No. 259C; coumarin; o-Coumaric acid lactone; o-Hydroxyzimtsaure-lacton; NCI C07103; cis-o-Coumaric acid anhydride; benzopyranone; Benzopyrone; o-Hydroxyzimtsaure-lacton [German]; UNII-A4VZ22K1WT; Benzopyran-2-one; NSC 8774; 2H-Chromen-2-one; MFCD00006850; 2-Propenoic acid, 3-(2-hydroxyphenyl)-, delta-lactone; CCRIS 181; EPA Pesticide Chemical Code 127301; BRN 0383644; C9H6O2; Benzo-.alpha.-pyrone; Cinnamic acid, o-hydroxy-, delta-lactone; CHEBI:28794; 2H-Benzopyran-2-one; 91-64-5; AI3-00753; HSDB 1623; o-hydroxycinnamic acid delta-lactone; 2-oxo-2H-1-benzopyran; EINECS 202-086-7; 3-(2-Hydroxyphenyl)-2-propenoic delta-lactone; 103802-83-1; A4VZ22K1WT; CHEMBL6466; 2-Propenoic acid, 3-(2-hydroxyphenyl)-delta-lactone; 2H-1-Benzopyran-2-one; MLS000028741; NSC8774; ZYGHJZDHTFUPRJ-UHFFFAOYSA-N; Coumarin, 99+%; NCGC00091502-01; Coumarin, >=98%; SMR000059040; ST023509; DSSTox_CID_348; DSSTox_RID_75529; 1,2-Benzopyrone; DSSTox_GSID_20348; 2-Propenoic acid, 3-(2-hydroxyphenyl)-, d-lactone; CAS-91-64-5; Coumarin [NF]; COU; Coumarin [NF X]; SR-01000721887; chromenone; chromen-one; d-lactone; cumarin; coumarinac lactone; Benzo-2-pyrone; benzopyrylium olate; Coumarin (DCF); 1, 2-Benzopyrone; Venalot mono (TN); CUMARINA; Coumarinic acid lactone; PubChem21620; Spectrum_001336; Rattex; ACMC-20aj0i; Opera_ID_268; Coumarinic acid lactone; 2H-Chromen-2-one #; 3-(2-hydroxyphenyl)-; 2H-1-benzopyran-2-on; AC1Q6HKG; Spectrum2_000303; Spectrum3_001772; Spectrum4_001818;