(4R)-(-)-2-Thioxo-4-thiazolidinecarboxylic acid, 5

EPA Method 1664 - Oil & Grease (Sonicate)

Multi-Element Internal Std., 10ug/ml, 4x25ml

Tm/Ts Mixture Tm – 0615,27 17alpha(H)-22,29,30-Trisnorhopane Ts – 2635,27 18alpha(H)-22,29,30-Trisnorneohopane With a spesific ratio between the two peaks based on a SIM spectra of ion m/z = 191