under the influence of light ( vis and uv ) on thin-layer plates and in liquid solutions , 1,4-dihydro-2,6-dimethyl-4- ( 0-nitro-phenyl ) -pyridine-3,5-carboxylic acid dimethylester ( nifedipine , adalat ) is converted to the nitroso compound 4- ( 2-'nitrosophenyl ) -2,6-dimethyl-3,5-dicarbomethoxy-pyridine .
C0028066
nifedipine
C0590658
adalat