Classification opinions
… used, one of the 20 to 80 essential human nutrients. This colourless, water-soluble solid is a derivative of pyridine, … a carboxyl group (COOH) at the 3-position (see chemical structure below). Application of GIRs 1 and 6. See also … used, one of the 20 to 80 essential human nutrients. This colourless, water-soluble solid is a derivative of pyridine, …