Analytical Reference substance

Levothyroxine N-Formyl Impurity,N-Formyl-T4 (USP)

N-Formyl-O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine


Product Number: OLY-LEVO-NFOR
CAS Number: 671235-41-9
Lot Number:
Molecular Formula: C16H11I4NO5
Molecular Weight: 804.88

Long Term Storage: 02-08 °C
Appearance:
Melting Point:
Purity By HPLC: NLT 96%

Sr No. Test Results Date ref.
1 1H NMR Confirm Report Attached
2 Mass Confirm Report Attached
3 HPLC NLT 96% Report Attached
Expiry Date: 21-03-2026
This certificate is valid for two years from the date of Manufacturing Provided the substance is stored under the recommended conditions.

Document data reference:
Prepared by

Dr. Ashish Keche
Head of QA & QC
Reviewed by

Dr. Girish Hatnapure
Head of R& D
Approved by

Dr. Atish Rodge
Managing Director

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