20526-97-0
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: 2025-08-27 08:09:55
| 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 |
|
~63%
20526-97-0 |
| Literature: Havaldar, Freddy H.; Dabholkar, Bhushan V.; Mule, Ganesh B. Synthetic Communications, 2013 , vol. 43, # 8 p. 1127 - 1137 |
| Precursor 2 | |
|---|---|
| DownStream 3 | |
| HS Code | 2932209090 |
|---|---|
| Summary | 2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |