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(9)Fmoc-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-WangResin (9) Preparation of Fmoc-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-WangResin (8)Fmoc-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-WangResin(20DMF)5203DMF3DMF2Fmoc-Lys(Boc)-OH1.1gDIEA0.4mlTBTU0.56gHOBT0.2gDMF10ml1.53DMF3DMF2Fmoc-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-WangResin In the Fmoc-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-WangResin of step (8), add a decapping reagent (20% piperidine in DMF solution), and react at room temperature for 5 minutes , drained, re-add capping agent and react at room temperature for 20 minutes, wash 3 times with isopropanol, wash 3 times with DMF, wash 2 times with re-distilled DMF, drain, add Fmoc-Lys(Boc)-OH 1.1g, DIEA0.4ml, TBTU0.56g, HOBT0.2g, DMF10ml reacted at room temperature for 1.5 hours, dried with a vacuum pump, washed 3 times with isopropanol, washed 3 times with DMF, washed twice with distilled DMF, and dried to obtain Fmoc -Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-WangResin
These toxic metals disrupt thyroid function, deplete essential minerals (like zinc and selenium), damage follicle cells directly, and create oxidative stress that accelerates hair thinning
However, "unlike most other vitamins, B12 is stored in substantial amounts, mainly in the liver, until it is needed by the body," according to Merck Manuals Consumer Version
Constipation: A few users of vitamin B-complex supplements complain of constipation
