1,1-Dimethoxynon-2-yne 13257-44-8 2-NONYNAL, DIMETHYL ACETAL 2-Nonyl-1-al dimethyl acetal 2-Nonyn-1-al dimethylacetal 2-Nonynal dimethylacetal 2-Nonyne, 1,1-dimethoxy- AI3-36004 BRN 4372599 EINECS 236-249-9 Parmavert