Purification process

C - Chemistry – Metallurgy – 07 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07C 209/84 (2006.01) A61K 31/137 (2006.01) A61P 31/10 (2006.01) C07C 211/30 (2006.01)

Patent

CA 2598846

Process for the purification from non-metal contaminants of the allylamine pharmaceutical terbinafine of formula (I) in free base form or acid addition salt form, by distilling crude terbinafine base, preferably by short path distillation, e.g. at a temperature above 100~C and reduced pressure, e.g. 0.2 mbar (method A), optionally together with salt formation of the resultant product under simultaneous precipitation of pure trans isomer (method B), and recovering the pure product in free base or acid addition salt form. Detection of non-metal contaminants such as substance A of formula (II) is preferably effected by RP HPLC analysis with UV detection.

L~invention concerne un processus d~élimination des contaminants non métalliques de la terbinafine pharmaceutique allylamine de la formule (I) sous forme de base libre ou sous forme de sel d~addition d~acide, en distillant une base de terbinafine brute, de préférence par distillation de courte distance, par exemple à une température supérieure à 100°C et une pression réduite, par exemple 0,2 mbar (procédé A), éventuellement avec la formation de sel du produit résultant avec une précipitation simultanée de pur isomère trans (procédé B), et en récupérant le produit pur sous forme de base libre ou sous forme de sel d~addition d~acide. La détection de contaminants non métalliques comme la substance A de la formule (II) se déroule de préférence par analyse RP HPLC avec détection UV.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Purification process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Purification process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Purification process will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2053865

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.