20526-97-0

20526-97-0 structure

20526-97-0 structure

Name: 4-chlorobenzylidene phthalide
Chemical Name: 3-((4-Chlorophenyl)methylene)phthalide
CAS Number: 20526-97-0
Molecular Formula: C₁₅H₉ClO₂
Molecular Weight: 256.68400
Catalog: analytical chemistry Standard Pharmacopoeia Standards and Magazine Standards
Create Date: 2017-04-02 08:57:16
Modify Date: 2024-01-04 14:38:59

Name	3-((4-Chlorophenyl)methylene)phthalide
Synonyms	3-(p-Chlorobenzylidene)phthalide 3-[(4-chlorophenyl)methylene]phthalide 3-(4-chlorobenzylidene)pentane-2,4-dione 3-(4-chlorobenzylidene)-2-benzofuran-1(3H)-one Azelastine impurity E 3-(4-Chlorobenzylidene)-2,4-pentanedione 1-Oxo-3-(4-chlor-benzyliden)-phthalan 3-(4-chloro-benzylidene)-3H-isobenzofuran-1-one 3-(p-chlorobenzylidene)-2,4-pentandione

Melting Point	153.0 to 158.0 °C
Molecular Formula	C₁₅H₉ClO₂
Molecular Weight	256.68400
Exact Mass	256.02900
PSA	26.30000
LogP	4.00850
Vapour Pressure	6.76E-07mmHg at 25°C

RIDADR	NONH for all modes of transport
HS Code	2932209090

1878-66-6 structure

1878-66-6

85-44-9 structure

85-44-9

~63%

20526-97-0 structure

20526-97-0

Literature: Havaldar, Freddy H.; Dabholkar, Bhushan V.; Mule, Ganesh B. Synthetic Communications, 2013 , vol. 43, # 8 p. 1127 - 1137

Precursor 2
1878-66-6 85-44-9
DownStream 3
53242-76-5 53242-88-9 1146-99-2

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