840-81-3
840-81-3 structure
- Name: 4-Pyridinecarboxylic acid, [ (4-hydroxyphenyl)methylene]hydrazide
- Chemical Name: N'-[(4-oxocyclohexa-2,5-dien-1-ylidene)methyl]pyridine-4-carbohydrazide
- CAS Number: 840-81-3
- Molecular Formula: C13H11N3O2
- Molecular Weight: 241.24500
- Create Date: 2017-04-28 00:33:43
- Modify Date: 2025-09-13 06:47:17
| Name | N'-[(4-oxocyclohexa-2,5-dien-1-ylidene)methyl]pyridine-4-carbohydrazide |
|---|---|
| Synonyms |
4-Hydroxy-benzaldehyd-isoniazidhydrazon
4-Hydroxy-benzaldehyd-isonicotinoylhydrazon p-Oxyberon INH 4OHPhCHO de p-Hydroxybenzaldehyd-isonicotinoylhydrazon p-Hydroxybenzalisonicotinic acid,hydrazone Flavoteben p-Hydroxy-benzaldehyd-isonicotinsaeurehydrazon |
| Density | 1.362g/cm3 |
|---|---|
| Boiling Point | 400ºC at 760 mmHg |
| Molecular Formula | C13H11N3O2 |
| Molecular Weight | 241.24500 |
| Flash Point | 195.7ºC |
| Exact Mass | 241.08500 |
| PSA | 74.58000 |
| LogP | 1.94200 |
| Index of Refraction | 1.696 |
| HS Code | 2933399090 |
|---|
| HS Code | 2933399090 |
|---|---|
| Summary | 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |