The most important derivatives of pyridine:
A pyridine, 5-ethyl-2-methyl pyridine (5-ethyl-2-piculin), 2-phenyl pyridine.
In order for these derivatives to be included in this item, they must be of purity of 90% or more by weight (in the case of methyl pyridine, all methyl pyridine isomers must be taken together at the calculation).
B - pyridine acids -
The pyridine gamma acid contains carboxylic acid (an isonicectonic acid), which is in the form of colorless crystals. It is produced by the process of oxidation of gamma - piculin or prepared by synthetic methods.
Hydrazide is used to treat these pulmonary tuberculosis.
The pyridine-beta-carboxylic acid (or nicotinic acid) is followed by item 29.36.
C-dimethylamide for pyridine-beta-carbo-cyclic acid) in the form of an almost colorless oil liquid, used in medicine as a stimulant for blood circulation and breathing.
D-meso-enositol Haxanectinites.
A pyridine, 5-ethyl-2-methyl pyridine (5-ethyl-2-piculin), 2-phenyl pyridine.
In order for these derivatives to be included in this item, they must be of purity of 90% or more by weight (in the case of methyl pyridine, all methyl pyridine isomers must be taken together at the calculation).
B - pyridine acids -
The pyridine gamma acid contains carboxylic acid (an isonicectonic acid), which is in the form of colorless crystals. It is produced by the process of oxidation of gamma - piculin or prepared by synthetic methods.
Hydrazide is used to treat these pulmonary tuberculosis.
The pyridine-beta-carboxylic acid (or nicotinic acid) is followed by item 29.36.
C-dimethylamide for pyridine-beta-carbo-cyclic acid) in the form of an almost colorless oil liquid, used in medicine as a stimulant for blood circulation and breathing.
D-meso-enositol Haxanectinites.
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Carboxylic acids