| 摘要 |
1. Method of production of methyl ester of 3-aminopiraxine-2 acid from 3-aminopiraxine-2 acid, consisting in that the esterification of 3-aminopiraxine-2 acid is carried out with the use of a methanol solution of methyl sulphuric acid and then the product is separated through dilution with water and neutralization to pH 7-8.
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