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  • photo

    Promethazine HCl

    CAS No. : 58-33-3

    Chemical Formula : C17H21ClN2S

    STD No. : 651P

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  • photo

    Promethazine Impurity 1(Promethazine EP Impurity A)

    CAS No. : 92-84-2

    Chemical Formula : C12H9NS

    STD No. : 6511P

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  • photo

    Promethazine Impurity 2(Promethazine EP Impurity B)

    CAS No. : 5568-90-1

    Chemical Formula : C17H21ClN2S

    STD No. : 6512P

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  • photo

    Promethazine Impurity 3(Promethazine EP Impurity C)

    CAS No. : 60113-77-1

    Chemical Formula : C16H19ClN2S

    STD No. : 6513P

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  • photo

    Promethazine Impurity 4(Promethazine EP Impurity D)

    CAS No. : 7640-51-9

    Chemical Formula : C17H20N2OS

    STD No. : 6514P

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About us

Standardpharm Co. Ltd. is a strict standard company. Its main members are former senior employees from EDQM and The United States Pharmacopeial Convention.They serve the global drug developers in the world's largest market of generic drugs and innovative drugs.

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  • Organization - Standardpharm Co. Ltd.
  • Address - 363 East 42nd Street NY, NY 10017
  • Phone - (259)224-623-952
  • Email - info@standardpharm.com
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