Details for vitamin k2
vitamin k2
111Category: 
CAS NO: 11032-49-8 EC NO: 234-264-5 Molecular Formula: C21H24O2 Molecular Weight: 308.4141 Specification: InChI: InChI=1/C21H24O2/c1-14(2)8-7-9-15(3)12-13-17-16(4)20(22)18-10-5-6-11-19(18)21(17)23/h5-6,8,10-12H,7,9,13H2,1-4H3/b15-12+ Synonyms: Vitamin K 2;Vitamin K2;Vitamin K2 (generic);2-[(2E)-3,7-dimethylocta-2,6-dien-1-yl]-3-methylnaphthalene-1,4-dione;Vitamin K2(20); Molecular Structure: 
if you are sourcing vitamin k2 from China ,just feel free to inquire
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