Levothyroxine USB E impurity

SL-1273

Levothyroxine USB E impurity, >98%

CAS No. : [26041-51-0]

MDL No. : MFCD24386430

Synonyms : N-Acetyl L-thyroxine; N-Acetylthyroxine; Levothyroxine N-Acetyl impurity; 1 N-Acetyl-T4 (USP)

IUPAC Name : (S)-2-Acetamido-3-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)propanoic acid

Price And Availability
Pack Size	Price in USD	Add To Shopping Cart	Availability	Shipping Status
100MG	95.00		In Stock	Estimated to ship on 20 September 2026
250MG	155.00		In Stock	Estimated to ship on 20 September 2026
500MG	275.00		In Stock	Estimated to ship on 20 September 2026
1G	555.00		In Stock	Estimated to ship on 20 September 2026
5G	2495.00		In Stock	Estimated to ship on 20 September 2026

Applications : N-Acetyl L-thyroxine is an analog of Thyroxine, which is a thyroid hormone for use in diagnosing and treating diabetes. Also, this is an impurity of L-Thyroxine (Levothyroxine USB E impurity), which is a synthetic hormone in the treatment of hypothyroidism. DIO enzymes convert biologically active thyroid hormone (Triiodothyronine,T3) from L-Thyroxine (T4).

References : De Wolf F. et al.: Pharm. Rev., 52, 207, 2000; Waner M. et al.: Biophys. J. 87, 2701, 2004.

Storage : Keep container tightly closed under nitrogen or argon and refrigerate for long-term shelf life.

Caution : In case of contact with skin or eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing and gloves.