JPS6426579A - Production of guanine crystal - Google Patents
Production of guanine crystalInfo
- Publication number
- JPS6426579A JPS6426579A JP18139387A JP18139387A JPS6426579A JP S6426579 A JPS6426579 A JP S6426579A JP 18139387 A JP18139387 A JP 18139387A JP 18139387 A JP18139387 A JP 18139387A JP S6426579 A JPS6426579 A JP S6426579A
- Authority
- JP
- Japan
- Prior art keywords
- guanine
- mineral acid
- solution
- crystal
- alkali
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE:To obtain the titled crystal having large crystal particle size in high purity, by crystallizing a crude guanine as a guanine mineral acid salt so as to exclude a nucleic acid-related substance accompanying as an impurity and colored substance, then dissolving the salt in an alkali while heating, neutralizing the salt solution with a mineral acid and crystallizing the neutralized product. CONSTITUTION:An alkali solution of guanine heated at >=60 deg.C, especially heated mineral acid solution of crude guanine containing hypoxanthine is cooled and crystallized and an alkali is added to the resultant guanine mineral acid salt and while or after adding a mineral acid to the resultant alkali solution of guanine heated at >=60 deg.C, the solution is cooled to 20 deg.C to provide the guanine crystal having excellent deliquid properties and short filtration time. The crystal is readily separated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18139387A JPS6426579A (en) | 1987-07-21 | 1987-07-21 | Production of guanine crystal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18139387A JPS6426579A (en) | 1987-07-21 | 1987-07-21 | Production of guanine crystal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6426579A true JPS6426579A (en) | 1989-01-27 |
Family
ID=16099958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18139387A Pending JPS6426579A (en) | 1987-07-21 | 1987-07-21 | Production of guanine crystal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6426579A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005113685A1 (en) * | 2004-05-22 | 2005-12-01 | Engelhard Corporation | Natural pearl in butylene glycol |
JP2020189819A (en) * | 2019-05-24 | 2020-11-26 | 国立大学法人山口大学 | Method for manufacturing guanine crystal |
JP7039086B1 (en) * | 2021-09-01 | 2022-03-22 | 新日本製薬株式会社 | Cosmetic composition, whitening gel cosmetics, eye cream cosmetics and foundation cream cosmetics |
-
1987
- 1987-07-21 JP JP18139387A patent/JPS6426579A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005113685A1 (en) * | 2004-05-22 | 2005-12-01 | Engelhard Corporation | Natural pearl in butylene glycol |
JP2020189819A (en) * | 2019-05-24 | 2020-11-26 | 国立大学法人山口大学 | Method for manufacturing guanine crystal |
JP7039086B1 (en) * | 2021-09-01 | 2022-03-22 | 新日本製薬株式会社 | Cosmetic composition, whitening gel cosmetics, eye cream cosmetics and foundation cream cosmetics |
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