O,N-dimethyl-N-(4-n-propylamino-6-but-2-ynylamino-[1,3,5]triazin-2-yl)hydroxylamine 、 hydrochloric acid diethyl ether 、 以to yield O,N-dimethyl-N-(4-n-propylamino-6-but-2-ynyl amino-[1,3,5]triazin-2-yl)-hydroxylamine hydrochloride (43a)的产率得到O,N-dimethyl-N-(4-n-propylamino-6-but-2-ynylamino-[1,3,5]triazin-2-yl)hydroxylamine hydrochloride