2-Vinylpyridine N-oxide polymer 9016-06-2 NSC 171333 POLYVINYLPYRIDINE N-OXIDE Poly(2-vinyl N-oxidopyridine) Poly(2-vinylpyridine N-oxide) Pyridine, 2-ethenyl-, 1-oxide, homopolymer (9CI) Pyridine, 2-vinyl-, 1-oxide, polymers (8CI)