Lab Craft and making a chain behave

Lab Craft is about making and handling chains. It covers how a peptide is assembled one residue at a time, how rings, staples and mirror-image residues protect it, and what the liquids and conversions around a vial really mean. Where an article does arithmetic, it is solution math with neutral numbers, never a conversion of a human dose.

Start with building a peptide one residue at a time and rings, staples and mirror images. What bac water is explains the preservative and its label, 25 units to mg shows why a syringe mark cannot stand in for a milligram figure, and semax nasal spray looks at what the nose-to-brain route can and cannot deliver.