Etoposide EP Impurity O is a related impurity of etoposide formed during the hydrolysis ring-opening of the 4,6-O-ethylidene protecting group in the sugar ring or during chemical synthesis. It is one of the specified impurities for the quality control of etoposide drug substances and formulations as defined by the European Pharmacopoeia (EP).

1-Dehydro-11α,16α-dihydroxycortexolone (Prednisolone Impurity 45) can be used as a reference standard and research reagent.

16alpha-Hydroxyprednisolone is a stereoselective metabolite of the 22(R) epimer of the glucocorticoid Budesonide.

Mivacurium Chloride Impurity A is an exclusive impurity reference standard of Mivacurium Chloride.

Mivacurium Chloride Impurity B is an exclusive impurity reference standard of Mivacurium Chloride.

Mivacurium Chloride Impurity 41 is an exclusive impurity reference standard of Mivacurium Chloride.

Mivacurium Chloride Impurity C is an exclusive impurity reference standard of Mivacurium Chloride.

Mivacurium Chloride Impurity D is an exclusive impurity reference standard of Mivacurium Chloride.

Trans-trans-Mivacurium Chloride reference standard for neuromuscular blocking drugs.

Cis-trans-Mivacurium Chloride is a isomer reference standard of Mivacurium Chloride.

Cis-cis-Mivacurium Chloride is a isomer reference standard of Mivacurium Chloride.

Sulfobutylbetadex Impurity D is mainly used as a surfactant and dispersant.