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pH Compatibility Analysis Reveals a Shared Stability Window Comparing the optimal pH ranges for each peptide and the reconstitution vehicle: Copper tripeptide (GHK-Cu): 5.07.0 (optimal 5.57.0) Thymosin fragment (TB-500): 4.57.5 (optimal 6.07.5) Body protection compound (BPC-157): 6.58.5 (stable across wider range, including more acidic conditions) Bacteriostatic water: pH 5.7 (range 4.57.0) The overlapping stability region spans approximately pH 5.57.0 , with the bacteriostatic waters pH of 5.7 falling near the optimal range for the copper tripeptide and within acceptable ranges for all three peptides

M.BjorkJ.et al (2007)

doi: 10.1128/MCB.6.7.2731 233

Nambiar A, Kellogg D 3rd, Justice J, Goros M, Gelfond J, Pascual R, et al