yà xiāo suān yì wù zhǐ
amyl nitrite
亚
yà
second
硝
xiāo
saltpeter
酸
suān
sour
异
yì
different
戊
wù
fifth of the ten Heavenly Stems 十天干[shi2 tian1 gan1]
酯
zhǐ
ester
Review