> From: IN%"<@CGNET.COM:NetID at cornell.edu>" "NetID" 10-AUG-1993 11:28
> Any ideas on how to make up an erythromycin stock solution i.e. dissolve
> in ethanol, base, acid, etc. Pls. post reference if you have one.
> Ola Sodeinde
The Sigma 1993 Catalog has a useful tabulation of technical information
on antibiotics they are marketting.
Now with respect to your inquiry: eythromycin is soluble in either 2 M HCl or
absolute ethanol. Recommended stock concentration is 100 mg per liter. The
Sigma table didn't specify whether the acid or the alcohol solution should
be used but I suppose the latter will be better. Furthermore, shelve your
tocks at subzero temperature. At 37 degrees C, the stability of an
erythromycin stock is limited to 3 days.
Good day! :-)
Plant Pathology Division
International Rice Research Institute
e-mail: rscott at irri.cgnet.com