An organic acid, C4H 6o 2, used in the preparation of pharmaceuticals and resins.
一种有机酸，C4H6o2，用于药剂的制作和树脂制品。
An amino acid, C4H 8ncooh, that is found in most proteins and is a major constituent of collagen.
氨基酸，化学式为C4H8ncooh，存在于大多数蛋白质中，是胶原蛋白的主要成分。
A nonessential amino acid, C4H 7no 4, found especially in young sugar cane and sugar-beet molasses.
一种不重要的胺基酸，C4H7no4，尤指从小的甘蔗和甜菜的糖蜜中提取的。
A crystalline organic base, C4H 4n 2, that is the parent substance of various biologically important derivatives.
一种晶状生物碱，C4H4n2，是多种生物性地重要衍生物的亲本物质。
A crystalline organic base, C4H 4n 2, that is the parent substance of various biologically important derivatives.
一种晶状生物碱，C4H4n2，是多种生物性地重要衍生物的亲本物质。
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