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Phthalide

CAS No.
87-41-2
Chemical Name:
Phthalide
Synonyms
Isobenzofuran-1(3H)-one;1(3H)-ISOBENZOFURANONE;ISOBENZOFURANONE;2-Benzofuran-1(3H)-one;Phthalid;PHTHALIDE;Phthalanone;AKOS 243-03;OXOPHTHALANE;Phthalide99%
CBNumber:
CB3245950
Molecular Formula:
C8H6O2
Molecular Weight:
134.13
MDL Number:
MFCD00005906
MOL File:
87-41-2.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-08-25 20:17:46

Phthalide Properties

Melting point 71-74 °C (lit.)
Boiling point 290 °C (lit.)
Density 1.1
refractive index 1.5360 (estimate)
FEMA 4195 | PHTHALIDE
FLAVIS Number 10.056 | Phthalide
Flash point 152 °C
storage temp. Keep in dark place,Inert atmosphere,Room temperature
solubility Chloroform (Slightly), Methanol (Slightly)
form Crystalline Powder
color White to light beige
Odor at 100.00 %. sweet tonka coumarin powdery coconut phenolic lactonic
Odor Type coumarinic
biological source synthetic
Water Solubility sparingly soluble
BRN 114632
Dielectric constant 36.0(23℃)
InChI 1S/C8H6O2/c9-8-7-4-2-1-3-6(7)5-10-8/h1-4H,5H2
InChIKey WNZQDUSMALZDQF-UHFFFAOYSA-N
SMILES O=C1OCc2ccccc12
LogP 0.99
CAS DataBase Reference 87-41-2(CAS DataBase Reference)
Substances Added to Food (formerly EAFUS) PHTHALIDE
EWG's Food Scores 1
FDA UNII 8VV922U86J
NIST Chemistry Reference 1(3H)-Isobenzofuranone(87-41-2)
EPA Substance Registry System Phthalide (87-41-2)
UNSPSC Code 85151701
NACRES NA.24

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H319
Precautionary statements  P264-P280-P337+P313-P305+P351+P338
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xi
Risk Statements  36-36/37/38
Safety Statements  26-36-24/25-37/39
WGK Germany  3
RTECS  TI3520000
TSCA  TSCA listed
HS Code  29322980
Storage Class 13 - Non Combustible Solids
REACH Registrations Active
NFPA 704
0
2 0

Phthalide price More Price(56)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich P39605 Phthalide 98% 87-41-2 100g $52.7 2026-04-30 Buy
Sigma-Aldrich 55906 Phthalide analytical standard 87-41-2 100mg $67.8 2022-05-15 Buy
TCI Chemical P0401 Phthalide >98.0%(GC) 87-41-2 25g $17 2026-04-30 Buy
TCI Chemical P0401 Phthalide >98.0%(GC) 87-41-2 500g $90 2026-04-30 Buy
TRC TRC-P384525-50G Phthalide 87-41-2 50g $195 2026-06-03 Buy
Product number Packaging Price Buy
P39605 100g $52.7 Buy
55906 100mg $67.8 Buy
P0401 25g $17 Buy
P0401 500g $90 Buy
TRC-P384525-50G 50g $195 Buy

Phthalide Chemical Properties,Uses,Production

Description

White powder; sweet tonka, coumarin, powdery, coconut, phenolic, lactonic aroma.
Phthalide powder

Uses

Phthalide may be used in scaffolds for the design of high potency monoamine oxidase (MAO) inhibitors.

Definition

ChEBI: A gamma-lactone that is 1,3-dihydro-2-benzofuran in which the hydrogens at position 1 are replaced by an oxo group.

Aroma threshold values

Low strength odor, Tonka type.

Taste threshold values

Sweet coumarin, coconut, creamy, anisic, green vegetable, floral taste at 100 ppm in water.

Synthesis Reference(s)

Chemistry Letters, 23, p. 1149, 1994
The Journal of Organic Chemistry, 68, p. 9423, 2003 DOI: 10.1021/jo0350763
Tetrahedron Letters, 7, p. 6097, 1966

Flammability and Explosibility

Not classified

Pharmacology

Systemic fungicide giving effective preventive control of the rice blast fungus in rice as foliar spray.

Purification Methods

Crystallise phthalide from water (75mL/g) and dry it in air on filter paper. [Beilstein 17/10 V 7.]

Toxicity evaluation

Mammalian toxicology. Oral: Acute oral LD50 for rats and mice >10000 mg/kg. Skin and eye: Acute percutaneous LD50 for rats and mice >10000 mg/kg. Not a shaved skin irritant, eye irritant (rabbits). Inhalation LC50 (4 h) for rats >4.1 mg/L air. NOEL: (2 yr) for rats 2000, mice 100 mg/kg diet.

201230-82-2
5159-41-1
87-41-2
Synthesis of Phthalide from carbon monoxide and 2-Iodobenzyl alcohol
Global( 549)Suppliers
Supplier Tel Email Country ProdList Advantage
Shanghai Harvest Chemical Industrial Co., Ltd. 15721252604 17321035817 sales@harvest-chem.com China 2829 64
Wuxi enqiao Pharmaceutical Technology Co., Ltd 0510-83591909 18018392058 info@enbridgepharm.com China 239 58
Jinan Jinchi Pharmaceutical Technology Co., LTD 15168890063 18888326116 76337143@qq.com China 64 58
Xi'an Beckman Chemical Technology Co., Ltd. 029-68065899;81136681 15309292692 fangxianwen@xa-bkm.com China 56 58
Dongyang Baihang Chemical Co., Ltd. 0579-86886233 18006543966 355093164@qq.com China 113 58
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
3B Pharmachem (Wuhan) International Co.,Ltd. 18930552037 3bsc@sina.com China 15813 69
Alfa Aesar 400-6106006 saleschina@alfa-asia.com China 30103 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81

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Phthalide pictures 2026-09-11 Phthalide
87-41-2
1KG 99% 100mt Jinan Finer Chemical Co., Ltd
Phthalide pictures 2026-06-30 Phthalide
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1KG 98.0% 10000KGS Shaanxi Dideu New Materials Co. Ltd
Phthalide pictures 2026-05-28 Phthalide
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$10.50 1KG 99.9% 10 ton Hebei Chuanghai Biotechnology Co,.LTD
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  • Jinan Finer Chemical Co., Ltd
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3H-2-Benzofuran-1-one 1,3-Dihydroisobenzofuran-1-one Phthalanone Phthalide,1-Isobenzofuranone Phthalide, 99% 5GR PHTHALIDE FOR SYNTHESIS 100 G PHTHALIDE FOR SYNTHESIS 250 G Phthalide 98% O-Hydroxymethylbenzoic Acid Lactone (Phthalanone) SPECS AE-641/30105043 PHTHALIDE OXOPHTHALANE O-HYDROXYMETHYLBENZOIC ACID LACTONE Chlortalidone Impurity 7 Butylphthalide Impurity 4 Phthalide 1(3H)-Isobenzofuranone Chlortalidone Impurity 17 1,3-Dihydrobenzo[C]furan-2-one 2-Benzofuran-1(3H)-one 2-Hydroxymethylbenzoic acid, gamma-lactone Phthalolactone 1-PHTHALANONE 1-OXOPHTHALAN 2-BENZOFURAN-(3H)-ONE 1-ISOBENZOFURANONE 1,3-DIHYDROBENZO[C]FURAN-1-ONE Phthalide99% Phthalide, 96+% Phthalide,98+% α-Hydroxy-o-toluic acid lactone AKOS 243-03 A-HYDROXY-O-TOLUIC ACID LACTONE BENZO(C)FURAN-2-ONE LABOTEST-BB LT00068498 PHTHALIDE pure 2-Hydroxymethylbenzoic acid g-lactone o-Hydruxymethy/benzoic acid lactone Phthalide> 1-Isobenzofuranone (Phthalide)@100 μg/mL in Methanol 1-Isobenzofuranone (Phthalide) Phthalide (6CI, 8CI) Butylphthalide Impurity 4(Chlortalidone Impurity 7) Isobenzofuranone in Acetonitrile C14382000 Isobenzofuranone Phthalide/o-HydroxymethylbenzoicAcidLactone benzenephthalazine Phthalide (Butylphthalide Impurity) 1(3H)-ISOBENZOFURANONE Isobenzofuran-1(3H)-one ISOBENZOFURANONE Phthalid 87-41-2 C6H4COOCH2 Building Blocks Benzofurans Carbonyl Compounds Organic Building Blocks Lactones