4-chlorobenzylidene phthalide

Names

[ CAS No. ]:
20526-97-0

[ Name ]:
4-chlorobenzylidene phthalide

[Synonym ]:
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

Chemical & Physical Properties

[ 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

Safety Information

[ RIDADR ]:
NONH for all modes of transport

[ HS Code ]:
2932209090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

DownStream

Customs

[ HS Code ]: 2932209090

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