CRYSTALLINE MODIFICATION OF HYDROCHLORIDE OF 2 DIMETHYLAMINOETHYL ETHER OF N-BUTYLAMINOBENZOIC ACID AND METHOD FOR ITS PRODUCTION Russian patent published in 1995 - IPC

Abstract RU 2028289 C1

FIELD: medicine. SUBSTANCE: product: novel crystalline modification of hydrochloride of 2-dimethylaminorthyl ether of n-butylaminobenzoic acid of β-form is characterized by one endothermic melting effect at 148.6148,6 ± 0,3^°C0.3 C and definite values of interplanar spacing and relative reflex intensities. Reagent 1 is solution of tetracaine hydromixture: cooling with coolant at rate of not below 8 C/min up to full crystallization of solution with subsequent drying up to residual moisture content not above 3%. EFFECT: higher efficiency. 4 cl, 3 dwg

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RU 2 028 289 C1

Authors

Leonidov N.B.

Dates

1995-02-09—Published

1991-04-30—Filed