Levothyroxine-d3 USB E impurity

SL-1274

Levothyroxine-d3 USB E impurity, >98% (CP)

Isotopic Purity : 99 atom % D

Related CAS No. : [26041-51-0] of the unlabelled compound

Synonyms : N-Acetyl-d3 L-thyroxine; N-Acetylthyroxine-d3; Levothyroxine N-Acetyl-d3 impurity; 1 N-Acetyl-d3 T4 (USP)

IUPAC Name : (S)-2-(Acetamido-2,2,2-d3)-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
5MG	Request A Quote		Back Order	Estimated to ship on 20 September 2026
10MG	Request A Quote		Back Order	Estimated to ship on 20 September 2026
25MG	Request A Quote		Back Order	Estimated to ship on 20 September 2026

Applications : N-Acetyl-d₃ L-thyroxine is a deuterium labelled version of N-Acetylthyroxine, which is a thyroid hormone for use in diagnosing and treating diabetes. Also, this is an impurity of L-Thyroxine (Levothyroxine-d₃ 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.