LC Caffeine Standards Kit, 6 x 10ml

5 alpha(H),14ß(H),17ß(H),20R-3ß-Benzyloxycholestane, , Solvent-, Unit , # of units-, Cas.no.

MCPB-ethyl ester, 100mg

2,4’-DDE, 1000µg/ml in Hexane, 1ml