Pharmaceutical Reference Standards / Impurity Standards

Levothyroxine Sodium EP impurity C
3,3`,5-Triiodo-D-thyronine
Levothyroxine Impurity 5
3,5,3`,5`-Tetraiodo Thyrolactic Acid
3-Bromo-L-Thyroxine
Levothyroxine impurity stage II
Levothyroxine Impurity 4
Levothyroxine Sodium
Levothyroxine Impurity 1