organic diphosphate TEPP CCOP(=O)(OCC)OP(=O)(OCC)OCC InChI=1S/C8H20O7P2/c1-5-11-16(9,12-6-2)15-17(10,13-7-3)14-8-4/h5-8H2,1-4H3 chebi_ontology IDCBOTIENDVCBQ-UHFFFAOYSA-N CHEBI:82149 CAS:107-49-3 C8H20O7P2 PPDB:1272 290.18770 Tetraethyl pyrophosphate 0 KEGG:C19017 290.06843