Process for preparing high purity...

Details Process for preparing high purity... Process for preparing high purity...

C - Chemistry, Metallurgy

07

J

260/62

C07J 9/00 (2006.01)

Patent

CA 2011273

PROCESS FOR PREPARING HIGH PURITY 3-ALPHA-7-BETA-DIHYDROXYCHOLANIC ACID ABSTRACT OF THE DISCLOSURE A process for preparing 3-alpha-7-beta-dihydroxycholanic acid from a crude product containing up to 15% by weight of 3-alpha-7-alpha- dihydroxycholanic acid and up to 1% by weight of 3-alpha- hydroxycholanic acid, by esterifyin with methanol, crystallizing from an aromatic solvent and recrystallinzing from a mixture of methanol, aromatic solvent and water.

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