Synonyms: NSC173981;MLS003106797;18522-01-5;(Spiro(cycloheptane-1,2'(4'H)-cyclohepta(d)(1,3)thiazine)4'-thione,) 1',5',6',7',8',9'-hexahydro-;{Spiro[cycloheptane-1,2'(4'H)-cyclohepta[d][1,3]thiazine]4'-thione,} 1',5',6',7',8',9'-hexahydro-;AC1MHFQO;NSC 173981;NSC-173981;NCI60_001413;SMR001821684;spiro[1,5,6,7,8,9-hexahydrocyclohepta[d][1,3]thiazine-2,1'-cycloheptane]-4-thione;Spiro[cycloheptane-1,3]thiazine]4'-thione, 1',5',6',7',8',9'-hexahydro-;Spiro[cycloheptane-1,2'(4'H)-cyclohepta[d][1,3]thiazine]4'-thione, 1',5',6',7',8',9'-hexahydro-