Reference Standard
| CAS Number | Not assigned |
| Formula | As defined in EP |
| Molecular Weight | ~300–330 g/mol |
| Purity | EP reference standard grade |
| Storage | Store refrigerated; protect from light |
EP Impurity C is another specified related substance of warfarin monitored for pharmacopoeial compliance.
Used in EP impurity testing, stability studies, and batch release.
Determined by HPLC/UPLC with EP system suitability, LC-MS identification.
