What are the sources of dimethyl carbonate which can be used as a methylating agent?

Question

Dimethyl carbonate is a perfect methylating agent.

Answer 1

Here is a list of bulk suppliers that handle dimethyl carbonate:
http://www.alibaba.com/productsearch/Dimethyl_Carbonate.html

Here is how it is produced: (there are about 5 different reactions that will lead to dimethyl carbonate):
http://www.chemsystems.com/newsletters/perp/May200099s6abs.cfm

Here is a list of suppliers that will sell small quantities of dimethyl carbonate:
http://www.chemexper.com/

Answer 2

If I had to make the stuff, I'd try passing carbon dioxide into a solution of methyl alcohol in water; water would be produced as a byproduct. If you get a white precipitate, it's probably dimethyl carbonate. I've never worked with it so don't know whether this will fly.

Answer 3

aldrich, fisher, etc. would be a place to start as well as scifinder and beilstein index