15<,硝態(tài)硝酸銨-15N,豐度:10atom%,5743-28-2,Calcium L-ascorbate dihydrate,L-抗壞血酸鈣二水合物,59489-71-3,2-Amino-5-bromopyrazine,2-氨基-5-溴吡嗪," />