(2,2'-Binaphthalene)-8,8'-dicarboxaldehyde, 1,1',6,6',7,7'-hexahydroxy-3,3'-dimethyl-5,5'-bis(1-methylethyl)-, mixt. with 1-ethenyl-2-pyrrolidinone homopolymer 77111-05-8 Gossypol-polyvinylpyrrolidone Gossypol-pvp Pvp-gossypol