Any process that stops, prevents, or reduces the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of inositol trisphosphate.
Synonyms:
exact_synonym:
negative regulation of IP3 biosynthesis; negative regulation of IP3 biosynthetic process; negative regulation of inositol trisphosphate anabolism; negative regulation of inositol trisphosphate biosynthesis; negative regulation of inositol trisphosphate formation; negative regulation of inositol trisphosphate synthesis
narrow_synonym:
negative regulation of myo-inositol trisphosphate biosynthesis; negative regulation of myo-inositol trisphosphate biosynthetic process