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Effects of thiol structure on nitric oxide generation and tolerance reversal
Understanding Vitamin B12 and Its Importance Vitamin B12, or cobalamin, is the newest type of water-soluble vitamin and ensures proper brain functioning, nerves, and the production of DNA and red blood cells
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Toxic solvent residues DMF (dimethylformamide) Known liver toxin Associated with reproductive toxicity Must be removed to extremely low limits in GMP drugs DCM (dichloromethane / methylene chloride) Probable human carcinogen Central nervous system depressant Dangerous even in small amounts if injected TFA (trifluoroacetic acid) Corrosive Can remain in peptides as unmeasured TFA salt Pharmaceutical products often convert TFA salts to safer counterions Without validated HPLC, mass spectrometry, and residual solvent testing, patients may be injected with harmful chemical contaminants
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