ampicillin analog?

[Yvon CAVALOC]

MR ROBERT G CHAPMAN wrote:
> 
> We're using an ampicillin based expression system but may be having
> trouble with scale-up due to ampicillin depletion. My boss remembers
> seeing an lactamase resistant analog of ampicillin compatable with
> our AmpR vector. Can anyone provide a refference to such an
> antibiotic?


I did use cephaloridine but I really don't know where it came from since
I took it from a big stock in my lab. I guess this antibiotic is more
stable (and much more expensive!!)

Yvon CAVALOC
UPR 41 CNRS
Faculte de Medecine
2, Av du Pr L Bernard
35043 RENNES Cedex - France