Acetil-L-carnitina (ALCAR) : posee un grupo "acetilo" que facilita su paso por la barrera hematoenceflica, siendo la forma ms estudiada para la salud neurolgica y cognitiva
Molecular Characteristics Complete Specifications: CAS Registry Number: NOT ASSIGNED (synthetic modified peptide) Molecular Weight: 431.40 Da (42 Da higher than Epitalon due to acetyl group) Molecular Formula: CHNO Amino Acid Sequence: N-Ac-Ala-Glu-Asp-Gly (acetylated AEDG) Modification: N-terminal acetylation (acetyl group: COCH) Peptide Classification: Synthetic modified tetrapeptide Appearance: White to off-white lyophilized powder Solubility: Water, bacteriostatic water, phosphate buffered saline The N-acetyl modification adds 42 Da to the molecular weight compared to unmodified Epitalon (390.35 Da)
Intranasal delivery, used with Selank and Semax, bypasses first-pass enzymatic metabolism in some systems, which partially explains why researchers observe longer effective durations than the IV values listed in typical half-life reference data

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