5-amino-6-benzyl-1,6-dihydropyrazin-2(3H)-one

N-(3-benzyl-5-hydroxypyrazin-2-yl)-4-methylbenzenesulfonamide

5-N-(p-toluenesulfonyl)amide-6-benzyl-2-O-trifluoromethanesulfonyloxy-pyrazine

N-(3-benzyl-5-oxo-1-tosyl-1,4,5,6-tetrahydropyrazin-2-yl)-4-methylbenzenesulfonamide

(4-甲氧基苯基)-氧代-乙醛肟