Dihydroergotamine for peak identification

Dihydroergotamine mesilate

Dihydroergotamine tartrate

Dihydrostreptomycin sulphate (for LC assay)

Dihydrotachysterol

Dihydrotachysterol for system suitability

Diltiazem for system suitability

Diltiazem hydrochloride

Diltiazem impurity F - (2S,3S)-5-[2-(dimethylamino)ethyl]-3-hydroxy-2-(4-methoxyphenyl)-2,3-dihydro-1,5-benzothiazepin-4(5H)-one

Dimenhydrinate