(Pentachlorophenyl)glycolonitrile 21727-09-3 BRN 2138728 Benzeneacetonitrile, 2,3,4,5,6-pentachloro-alpha-hydroxy- (9CI) MANDELONITRILE, PENTACHLORO- Mandelonitrile, 2,3,4,5,6-pentachloro- (8CI) Oryzon PCMN Pentachloromandelonitrile