- Dissolve 0.2gm paracetamol in 4ml pyridine.
- Add 0.5gm of 4 nitrobenzoyl chloride, boil for 2 or 3 minutes,cool & pour into 40ml water & stirr.
- The ppt after washing with 30ml water, 30ml of 1% W/V solution of sodium carbonate & 30ml water & recrystallisation from alcohol, melts at 210 degree.
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