Sp-dATP-α-S is a modification of 2'-deoxyadenosine triphosphate (dATP), where one of the non-bridging oxygens in the S position of the ?-phosphate is replaced by sulfur. The suffix "p" indicates that R/S nomenclature refers to phosphorus. The corresponding Rp-isomer is offered as well (Cat. No.
MBS256292).