Alimemazine for system suitability

Alimemazine hemitartrate

Allantoin

Allopurinol

Allopurinol impurity A - 5-amino-1H-pyrazole-4-carboxamide

Allopurinol impurity B - 5-formylamino-1H-pyrazole-4-carboxamide

Allopurinol impurity C - 5-(4H-1,2,4-triazol-4-yl)1H-pyrazole-4-carboxamide

Allopurinol impurity D - ethyl 5-amino-1H-pyrazole-4-carboxylate

Allopurinol impurity E - ethyl 5-(formylamino)-1H-pyrazole-4-carboxylate

All-rac-alpha-tocopherol for peak identification