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Kaolin, pure..
kappa-Carrageenan..
Kartogenin..
Ketoconazole, 98%..
Khellin, 95%..
Kinetin, 99%..
Kjeldahl tablets with selenium (Wieninger)..
Kojic acid, 99%..
Kryptofix® 222, 98%..
L(+)-2-Aminobutyric acid, 98%..
L(+)-allo-Threonine, 99%..
L(+)-alpha-Phenylglycine, 99%..
L(+)-Amethopterin hydrate, 99%..
L(+)-Arabinose, 99%, for biochemistry..