LEVOTHYROXINE

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Impurity Standards

Levothyroxine Impurity 22 (O-(4-Hydroxy-3,5- diiodophenyl)-3,5-diiodo-hydroxy-l-tyrosine)

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CAS No.-

Mol. F.C15H11I4NO5

Mol. W.792.88

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LEVOTHYROXINE

Levothyroxine Related Compound 2

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CAS No.93647-48-4

Mol. F.C14H8I4O5

Mol. W.763.83

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LEVOTHYROXINE

Levothyroxine Related Compound 3 (N-Formyl-O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L- Tyrosine)

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CAS No.671235-41-9

Mol. F.C16H11I4NO5

Mol. W.804.88

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LEVOTHYROXINE

Levothyroxine Related Compound 4 (2-(4-(4-Hydroxy-3,5-diiodophenoxy)-3,5- diiodophenyl)acetamide)

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CAS No.176258-88-1

Mol. F.C14H9I4NO3

Mol. W.746.85

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LEVOTHYROXINE

Levothyroxine Related Compound 5 [N-Acetyl-O-(4-Hydroxy-3,5-Diiodophenyl)-3,5-Diiodo-L- Tyrosine]

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CAS No.26041-51-0

Mol. F.C17H13I4NO5

Mol. W.818.91

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LEVOTHYROXINE

2-(4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)acetic acid

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CAS No.-

Mol. F.C14H8I4O4

Mol. W.747.84

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Impurity Standards

Levothyroxine EP Impurity I (4-(4-Hydroxy-3,5- diiodophenoxy)-3,5-diiodobenzaldehyde)

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CAS No.2016-06-0

Mol. F.C13H6I4O3

Mol. W.717.81

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Impurity Standards

Levothyroxine EP Impurity H

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CAS No.2055-97-2

Mol. F.C13H6I4O4

Mol. W.733.80

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Impurity Standards

Levothyroxine Impurity 21

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CAS No.107849-54-7

Mol. F.C15H11I4NO5

Mol. W.792.87

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Impurity Standards

Levothyroxine EP Impurity F

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CAS No.911661-90-0

Mol. F.C21H13I6NO5

Mol. W.1120.77

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