Formulation: A solution in ethanol (10 μg/ml of each compound)
Shelf life (days): 3650
Notes: This mixture contains various short-chain fatty acids (≤12:0). The mixture is supplied in an amber ampule in which the headspace has been purged with argon to prevent lipid oxidation. This product has been designed for direct use in LC-MS applications. The solution may be serially diluted for preparation of calibrators and QC standards and/or used directly as a system suitability standard or tuning standard. After opening, we recommend that the mixture be transferred immediately to a 1 ml glass screw cap vial, to prevent solvent evaporation, and stored at -20°C. The short-chain fatty acids represented in this mixture are saturated and are composed of 12 or less carbons. These compounds are naturally occurring and have been used as intermediates in chemical syntheses and in the manufacture of esters for industrial production of perfumes, lubricants, greases, rubber, dyes, plastics, food additives, herbicides, and pharmaceuticals.