Common use of Material and Methods Clause in Contracts

Material and Methods. 2.1 Chemicals and materials LC-MS-grade acetonitrile (ACN) and formic acid were purchased from Biosolve B.V. (Valkenswaard, Netherlands). Anhydrous methyl tert-butyl ether (MTBE, ≥99.8%), ammonium acetate (≥99.0%) and ammonium formate (≥99.9%) were purchased from Sigma-Xxxxxxx (St. Xxxxx, Missouri, United States). Purified water was obtained from a Milli-Q PF Plus system (Merck Millipore, Burlington, Massachusetts, United States). The standard reagents α-linolenoyl ethanolamide (α-LEA), palmitoleoyl ethanolamide (POEA), pentadecanoyl ethanolamide (PDEA), linoleoyl ethanolamide (LEA), anandamide (AEA), docosahexaenoyl ethanolamide (DHEA), 1-arachidonoylglycerol (1-AG), 2- arachidonoylglycerol (2-AG), 1-linoleoyl glycerol (1-LG), 2-linoleoyl glycerol (2-LG), palmitoyl ethanolamide (PEA), dihomo-γ-linolenoyl ethanolamide (DGLEA), docosatetraenoyl ethanolamide (DEA), 1-oleoyl glycerol (1-OG), 2-oleoyl glycerol (2-OG), stearoyl ethanolamide (SEA), eicosapentaenoyl ethanolamide (EPEA), xxxx acid ethanolamide (ETAEA), N-oleoylethanolamine (OEA) and deuterated standards N-(2- hydroxyethyl-1,1,2,2-d4)-9Z,12Z-octadecadienamide (LEA-d4), N-(2-hydroxyethyl- 1,1',2,2'-d4)-4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenamide (DHEA-d4), N-(2- hydroxyethyl)-5Z,8Z,11Z,14Z-eicosatetraenamide-5,6,8,9,11,12,14,15-d8 (AEA-d8), 5Z,8Z,11Z,14Z-eicosatetraenoic-5,6,8,9,11,12,14,15-d8 acid (2-AG-d8), N-(2- hydroxyethyl)-hexadecanamide-7,7,8,8-d4 (PEA-d4), N-(2-hydroxyethyl)-octadecanamide- 18,18,18-d3 (SEA-d3) and N-(2-hydroxyethyl-1',1,2,2'-d4)-9Z-octadecenamide (OEA-d4) were purchased from Cayman Chemical (Ann Arbor, Michigan, United States).