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119 XuC.LiJ.JiangS.WanL.ZhangX.XiaL.et al (2022)
The COA confirms verification across six assays: purity (99% by HPLC standard), identity (LC-MS), endotoxins, sterility, heavy metals, and net peptide content
Some work better for specific injuries
Bacterial fermentation creates AdoB 12 and MeB 12 , which are converted to cyanocobalamin by the addition of potassium cyanide in the presence of sodium nitrite and heat
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