LEVOTHYROXINE

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Impurity Standards

Levothyroxine EP Impurity B

CAT No.-

CAS No.1628720-66-0

Mol. F.C15H11ClI3NO4

Mol. W.685.43

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Impurity Standards

Levothyroxine Impurity J (3,3'-L-Diiodothyronine)

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CAS No.4604-41-5

Mol. F.C15H13I2NO4

Mol. W.525.08

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Impurity Standards

Levothyroxine Impurity K

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CAS No.5817-39-0

Mol. F.C15H12I3NO4

Mol. W.650.98

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Impurity Standards

Levothyroxine Impurity C

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CAS No.51-24-1

Mol. F.C14H9I3O4

Mol. W.621.94

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Impurity Standards

Levothyroxine Impurity 10

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CAS No.909279-46-5

Mol. F.C15H11ClI3NO4

Mol. W.685.43

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Isotope Labelled Compounds

Levothyroxine-13C9-15N

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CAS No.1431868-11-9

Mol. F.13C9 15N C6H11I4O4

Mol. W.786.80

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Impurity Standards

Levothyroxine Impurity 11

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CAS No.1155-40-4

Mol. F.C14H10I2O4

Mol. W.496.04

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Impurity Standards

Levothyroxine Impurity 15

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CAS No.-

Mol. F.C19H19I2NO5

Mol. W.595.17

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Impurity Standards

Levothyroxine Impurity 16

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CAS No.3006-01-7

Mol. F.C19H18I3NO5

Mol. W.721.07

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LEVOTHYROXINE

Levothyroxine N-Methylamine

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CAS No.-

Mol. F.C16H14I4N2O3

Mol. W.789.92

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