Promethazine EP Impurity D

CAS No: ​7640-51-9?

Molecular Formula:​ C17H20N2OS?

Molecular Weight: ​300.42?

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Promethazine HCl

CAS No: ​58-33-3?

Molecular Formula:​ C17H21ClN2S

Molecular Weight: ​320.88

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Promethazine Impurity B

CAS No: ​5568-90-1?

Molecular Formula:​ C17H21ClN2S

Molecular Weight: ​320.88

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API – Impurities | Specialty Chemicals

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