Pharmaceutical Reference Standards / Impurity Standards

Terephthalic Acid
Terephthalic Acid Impurity 2
Terephthalic Acid Impurity 3
Bis(4-hydroxybutyl) Terephthalate
Terephthalic Acid Impurity 6
Terephthalic acid Impurity 1

Isotope Labelled Compounds

Terephthalic-2,3,5,6-D4 Acid