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  • photo

    Methotrexate

    CAS No. : 59-05-2

    Chemical Formula : C20H22N8O5

    STD No. : 713M

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  • photo

    Methotrexate Impurity 1(EP-A)

    CAS No. : 945-24-4

    Chemical Formula : C7H8N6O

    STD No. : 7131M

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  • photo

    Methotrexate Impurity 2(EP-B)

    CAS No. : 54-62-6

    Chemical Formula : C19H20N8O5

    STD No. : 7132M

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  • photo

    Methotrexate Impurity 3(EP-C)

    CAS No. : 2410-93-7

    Chemical Formula : C20H21N7O6

    STD No. : 7133M

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  • photo

    Methotrexate Impurity 4(EP-D)

    CAS No. : 5623-18-7

    Chemical Formula : C15H14N6O3

    STD No. : 7134M

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    Methotrexate Impurity 5(Methotrexate EP Impurity E)

    CAS No. : 70844-48-3

    Chemical Formula : C30H31ClN14O4

    STD No. : 7135M

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    Methotrexate Impurity 6(EP-F)

    CAS No. : 51865-79-3

    Chemical Formula : C20H22N8O5

    STD No. : 7136M

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    Methotrexate Impurity 7(EP-G)

    CAS No. : N/A

    Chemical Formula : C28H29N9O6

    STD No. : 7137M

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    Methotrexate Impurity 8(EP-H)

    CAS No. : 67022-39-3

    Chemical Formula : C21H24N8O5

    STD No. : 7138M

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    Methotrexate Impurity 9(EP-I)

    CAS No. : 66147-29-3

    Chemical Formula : C21H24N8O5

    STD No. : 7139M

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    Methotrexate Impurity 10(EP-J)

    CAS No. : 34378-65-9

    Chemical Formula : C22H26N8O5

    STD No. : 71310M

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    Methotrexate Impurity 11(EP-K)

    CAS No. : 4271-30-1

    Chemical Formula : C12H14N2O5

    STD No. : 71311M

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    Methotrexate Impurity 12(EP-L)

    CAS No. : 52980-68-4

    Chemical Formula : C13H16N2O5

    STD No. : 71312M

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    Methotrexate Impurity 13

    CAS No. : N/A

    Chemical Formula :

    STD No. : 71313M

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  • photo

    Methotrexate-d3

    CAS No. : 432545-63-6

    Chemical Formula : C20H19D3N8O5

    STD No. : 713MD3

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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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