5,5-bis(mercaptomethyl)-2-p-nitrophenyl-1,3-dioxane
2,2-bis(sulfanylmethyl)propane-1,3-diol
3,9-bis(p-nitrophenyl)-2,4-dioxa-8,10-dithia-spiro[5.5]undecane
3,9-bis(m-nitrophenyl)-2,4-dioxa-8,10-dithia-spiro[5.5]undecane
5,5-bis(hydroxymethyl)-2-p-nitrophenyl-1,3-dithiane