2'3'5'-triacetyl-5-Azacytidine is a prodrug form of 5-azacytidine that may be rapidly absorbed orally.

Isorhyncophylline and rhyncophylline can directly inhibit the contractile responses induced by several agonists in small blood vessels of rat, they also can inhibit the hypertensive effect of angiotensin Ⅱ.

Pyruvic acid is an intermediate compound in the metabolism of carbohydrates proteins and fats. In thiamine deficiency its oxidation is retarded and it accumulates in the tissues especially in nervous structures.