. "Any process that modulates the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of thiamine diphosphate." . . . . . . "regulation of thiamine diphosphate biosynthetic process" . "regulation of thiamin diphosphate biosynthetic process" . "regulation of thiamine diphosphate anabolism" . "regulation of thiamine diphosphate biosynthesis" . "regulation of thiamine diphosphate formation" . "regulation of thiamine diphosphate synthesis" . . .