聚乙烯吡咯烷酮杂质

聚乙烯吡咯烷酮杂质A Imp. A (EP)； 1-Ethenylpyrrolidin-2-one (1-Vinylpyrrolidin-2-one, N-Vinyl-2-pyrrolidone)

聚乙烯吡咯烷酮杂质B Imp. B (EP)； Pyrrolidin-2-one (2-Pyrrolidone)

Vinyl Acetate