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2 137 775

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IPC

(21) (22)

Application

97120562/04, 1997-12-11

(24)

Start date

1997-12-11

(22)

Actual filing date

1997-12-11

(45)

Published

1999-09-20

(72)

Inventor

Rabinovich I.M.

(73)

Holder

Aktsionernoe Kurganskoe Obshchestvo

METHOD OF ISOLATING OXACILLINE SODIUM SALT Russian patent published in 1999 - IPC

Abstract RU 2137775 C1

FIELD: organic synthesis. SUBSTANCE: invention relates to isolation of oxacilline sodium salt from its aqueous and water-organic solutions obtained both in oxacilline synthesis and when dissolving oxacilline or oxacilline-containing mixtures by means of precipitation with acid sodium salt. Method is distinguished by that above-mentioned salt is that of mineral acid and this salt is added to concentration 10-15%, after which product is afterprecipitated by saturated salt solution added in amount from 0.8 to 1.5 volume of initial oxacilline solution. EFFECT: increased purity and yield of product. 2 cl, 3 ex

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RU 2 137 775 C1

Authors

Rabinovich I.M.

Dates

1999-09-20—Published

1997-12-11—Filed

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