发明名称 |
Purification of caffeine |
摘要 |
A process for the purification of caffeine which comprises carrying out the following steps in any order; (a) recrystallization of caffeine from an aqueous alkaline solution of caffeine containing a reducing agent and (b) extraction of the caffeine from an aqueous alkaline solution of caffeine with a substantially water-immiscible solvent which is liquid under the conditions of the process.
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申请公布号 |
US4531003(A) |
申请公布日期 |
1985.07.23 |
申请号 |
US19830479791 |
申请日期 |
1983.03.23 |
申请人 |
NESTEC S. A. |
发明人 |
HIRSBRUNNER, PIERRE;PAVILLARD, BLAISE |
分类号 |
C07D473/12;(IPC1-7):C07D473/12 |
主分类号 |
C07D473/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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