Thank you to all those who responded. I went back to my purchasing agent
with the information and today received nitrosoguanidine from Sigma. The
catalog number on the shipping list was 70-12994-1. The product was in an
Aldrich container, and the product number 12994-1 is an Aldrich number. I
have since found the product listed in the Aldrich catalog (I missed it
when I looked before).
In article <jack-220694085148 at 18.104.22.168>, jack at neb.com (Bill Jack)
> Does anyone know a supplier of N-methyl-N'-nitro-N-nitrosoguanidine
> (nitrosoguanidine) to be used for mutagenesis? Sigma no longer carries it.