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Patent Searching and Data


Title:
PURIFICATION OF TESTOSTERONE ENANTHATE
Document Type and Number:
Japanese Patent JPS562999
Kind Code:
A
Abstract:

PURPOSE: To increase the crystal size and the bulk density of crystallized testosterone enanthate, and to improve the efficiency of extraction and filtration of slurry, by crystallizing crude testosterone enanthate in a mixed solvent comprising specific amounts of water and alcohol.

CONSTITUTION: Crude testosterone enanthate of formula is dissolved in an aliphatic lower alcohol (pref. methanol). The solution is cooled near the crystallization temperature, and mixed with 10W50wt%, pref. 20W30wt%, based on the alcohol, of water, and recrystallized at ≤0°C, pref. ≤-10°C.

USE: A long-acting male hormone for injection.


Inventors:
KANOU NATSUKI
ITOU KIYOTAKA
FUJIMOTO EIJI
Application Number:
JP1979000078764
Publication Date:
January 13, 1981
Filing Date:
June 22, 1979
Export Citation:
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Assignee:
MITSUBISHI CHEM IND
International Classes:
C07J1/00; (IPC1-7): C07J1/00