发明名称 |
METHODS AND APPARATUS FOR PRODUCTION OF NATURAL L-MENTHOL |
摘要 |
Embodiments are provided that provide for efficient production of highly pure natural I-menthol. In some embodiments, a method for preparing natural I-menthol involves providing crude mentha oil in a crystallizer and gradually reducing the temperature of the crystallizer in a step-wise manner, thereby producing highly pure crystals in less than two weeks. The methods disclosed herein are suitable for pharmaceutical GMP.
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申请公布号 |
US2011313205(A1) |
申请公布日期 |
2011.12.22 |
申请号 |
US201013148929 |
申请日期 |
2010.02.17 |
申请人 |
NAGAOKA RYOSUKE;IZUKURA HIDEAKI;TOKITA SUSUMU;SHIBATA YURI;NAGAOKA YOSHIYUKI;NAGAOKA & CO. LTD. |
发明人 |
NAGAOKA RYOSUKE;IZUKURA HIDEAKI;TOKITA SUSUMU;SHIBATA YURI;NAGAOKA YOSHIYUKI |
分类号 |
C07C29/78;B01D9/00 |
主分类号 |
C07C29/78 |
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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