Belle Chemical Company is a key North American producer of methylamines including amines - monomethylamine (MMA), dimethylamine (DMA), trimethylamine (TMA) - and the only domestic producer of amides - dimethyl formamide (DMF) and dimethylacetamide (DMAc). (chempoint.com)
Dimethyl1
This process is disadvantageous in that the percentage conversion and yield are low and 5,5-dimethyl-3-formylcyclohexa-2-en-1,4-dione is byproduced in about the same amount as 3,5,5-trimethylcyclohexa-2-en-1,4-dione. (justia.com)
Sulfur1
Chondroitin sulfate-E (chondroitin-4, 6-disulfate) was prepared from chondroitin sulfate-A (chondroitin-4 - sulfate) by regioselective sulfonation, performed using trimethylamine sulfur trioxide in formamide under argon. (rpi.edu)