[Contribution to the preparation and analysis of alkyl-substituted pyridinne carbonic acids. 1. Preparation of some methyl- and ethyl-substituted pyridine carbonic acids].
D000143:Acids; D002255:Carbonic Acid; D011725:Pyridines
D000143:Acids; D011725:Pyridines; D002255:Carbonic Acid; C023666:pyridine
ACIDS; PYRIDINES