Oxytetracycline for system suitability

Aescin for LC assay HRS

Tacalcitol for system suitability

Tacalcitol impurity A - ((5E,7E)-(1S,3R,24R)-9,10-secocholesta-5,7,10(19)-triene-1,3,24-triol (trans-tacalcitol)

Erythromycin ethylsuccinate for impurity P identification

Tacalcitol monohydrate

Geniposide

Cape jasmine fruit for system suitability

Taxifolin ((2R,3R)-3,3',4',5,7-Pentahydroxyflavanone, (2R,3R)-Dihydroquercetin))

Polygonum orientale fruit for system suitability