Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Acetic acid,2-(3-oxo-1(3H)-isobenzofuranylidene)-
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4743-57-1

4743-57-1 structure

Name: Acetic acid,2-(3-oxo-1(3H)-isobenzofuranylidene)-
Chemical Name: 2-(3-oxo-1,3-dihydroisobenzofuran-1-yliden)acetic acid
CAS Number: 4743-57-1
Molecular Formula: C₁₀H₆O₄
Molecular Weight: 190.15200
Create Date: 2018-10-18 10:52:14
Modify Date: 2025-08-31 15:51:11

Name	2-(3-oxo-1,3-dihydroisobenzofuran-1-yliden)acetic acid
Synonyms	BUTTPARK 934-19 3-carboxymethylenephthalide (2Z)-(3-oxo-2-benzofuran-1(3H)-ylidene)acetic acid PHTHALIDENEACETIC ACID Phthalidyliden-essigsaeure Phthalylessigsaeure Phthalylaceticacid (3-oxo-3H-isobenzofuran-1-ylidene)-acetic acid phthalidyliden-acetic acid

Density	1.612g/cm3
Boiling Point	362.9ºC at 760mmHg
Melting Point	287ºC
Molecular Formula	C₁₀H₆O₄
Molecular Weight	190.15200
Flash Point	151ºC
Exact Mass	190.02700
PSA	63.60000
LogP	1.28250
Index of Refraction	1.749

CHEMICAL IDENTIFICATION

RTECS NUMBER :: TH7500000

CHEMICAL NAME :: delta(sup 1,alpha)-Phthalanacetic acid, 3-oxo-

CAS REGISTRY NUMBER :: 4743-57-1

LAST UPDATED :: 199710

DATA ITEMS CITED :: 3

MOLECULAR FORMULA :: C10-H6-O4

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD - Lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >500 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: NCNSA6 National Academy of Sciences, National Research Council, Chemical-Biological Coordination Center, Review. (Washington, DC) Volume(issue)/page/year: 5,8,1953

HS Code	2932209090

85-44-9

108-24-7

~49%

4743-57-1

Literature: Briner, Karin; Doecke, Christopher William; Mancuso, Vincent; Martinelli, Michael John; Richardson, Timothy Ivo; Rothhaar, Roger Ryan; Shi, Qing; Xie, Chaoyu Patent: US2004/82590 A1, 2004 ; Location in patent: Page/Page column 97 ; US 20040082590 A1

85-44-9

127-08-2

4743-57-1

Literature: Hanack, Michael; Zipplies, Tilman Journal of the American Chemical Society, 1985 , vol. 107, # 21 p. 6127 - 6129

53266-48-1

4743-57-1

Literature: Gabriel Chemische Berichte, 1884 , vol. 17, p. 2527 Chemische Berichte, 1885 , vol. 18, p. 2444

7664-93-9

897-38-1

606-23-5

4743-57-1

Literature: Suszko; Wojcinski Chemische Berichte, 1936 , vol. 69, p. 2452,2453

7664-93-9

897-38-1

577-56-0

88-99-3

Detail

Literature: Suszko; Wojcinski Chemische Berichte, 1936 , vol. 69, p. 2452,2453

Precursor 6
85-44-9 108-24-7 127-08-2 53266-48-1
7664-93-9 897-38-1
DownStream 9
4743-58-2 577-56-0 103935-10-0 3453-63-2
88-99-3 3067-12-7 860699-44-1 3453-64-3
1707-95-5

HS Code	2932209090
Summary	2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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