144319-31-3 2-Piperidinone, 1-(6,7-dihydro-6-hydroxy-5,5-dimethyl-2-nitro-5H-thieno(3,2-b)pyran-7-yl)-, cis-(+-)- 5,6-Dihydro-6-hydroxy-5,5-dimethyl-2-nitro-7-(2-oxopiperidin-1-yl)-5H-thieno(3,2-b)pyran 5,6-Dnotp Rwj 26629 Rwj-26629