咖啡因化学结构的基本母核是A:萘啶环 B:喹啉环 C:苯并咪唑环 D:喹唑啉环 E:黄嘌呤

作者: tihaiku 人气: - 评论: 0
问题 咖啡因化学结构的基本母核是
选项 A:萘啶环 B:喹啉环 C:苯并咪唑环 D:喹唑啉环 E:黄嘌呤
答案 E
解析 咖啡因属于黄嘌呤类生物碱,具有黄嘌呤生物碱的特征鉴别反应即紫脲酸铵反应。
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