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Glycylglycine is the dipeptide of glycine, making it the simplest peptide.
G 1422 (OTTO) Gly-Gly ≥99% (titration) Cas 556-50-3 - used as a buffer for the measurement of glucose-6-phosphate dehydrogenase (G6PDH) activity and as a component of luciferase assay buffer.