To calculate the charge on a peptide you must add up the charges from all the positively charged components like the N-terminal amino group, arginine, lysine, and histidine residues, and then subtract the charges from all the negatively charged components like the C-terminal carboxyl group, aspartic acid, glutamic acid, cysteine, and tyrosine residues
Bacteriostatic water = sterile water + 0.9% benzyl alcohol The added benzyl alcohol acts as a preservative, so a single reconstituted vial can be drawn from repeatedly instead of needing to be used all at once
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Are these peptides intended for human use
The benzyl alcohol acts as a bacteriostatic agent, effectively inhibiting the growth of any potential bacteria, thus preserving the sterility of the solution and prolonging its shelf life