Ftaldialdehído suitable for HPLC fluorimetric detection of amino acids, ≥99% (HPLC), powder or crystals x 250 mg – Sigma-Aldrich

Tripsina from porcine pancreas lyophilized powder, BioReagent, suitable for cell culture, 1,000-2,000 BAEE units/mg solid x 5 g – Sigma-Aldrich