Synonyms: 2-Piperidinone,1-(6,7-dihydro-6-hydroxy-5,5-dimethyl-2-nitro-5H-thieno[3,2-b]pyran-7-yl)-,cis- (9CI); 2-Piperidinone,1-(6,7-dihydro-6-hydroxy-5,5-dimethyl-2-nitro-5H-thieno[3,2-b]pyran-7-yl)-,cis-(?à)-; 5H-Thieno[3,2-b]pyran,2-piperidinone deriv.