Merck 808518 1-Vinyl-2-Pyrrolidone (Stabilized With N,N'-Di-Sec-Butyl-1,4-Phenylenediamine) For Synthesis Cas 88-12-0Merck 808518 1-Vinyl-2-Pyrrolidone (Stabilized With N,N'-Di-Sec-Butyl-1,4-Phenylenediamine) For Synthesis Cas 88-12-0, Merck808518.0005