Test sample of Promethazine hydrochloride tablets related substance in Film-coated tablets
|Column||Welch Ultisil Polar RP 4.6×250，5μm (P/N: 00215-31043)|
|Mobile Phase||Water (Adjust pH to 1.8 with glacial acetic acid): methanol = 55:45|
|Notes||Sensitive to injection volume and dissolved sample solvent|
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