octadecyl

plural octadecyls

1. chemistryAny of very many isomeric univalent hydrocarbon radicals, C₁₈H₃₇, formally derived from an octadecane by the loss of a hydrogen atom

   Although catalyst IV also has good catalytic performance, it was totally soluble in the reaction system during and after the epoxidation, because it contains a big octadecyl benzyl dimethyl ammonium ion.

   2001 May 11, Xi Zuwei et al., “Reaction-Controlled Phase-Transfer Catalysis for Propylene Epoxidation to Propylene Oxide”, in Science, volume 292, number 5519, →DOI, pages 1139–1141

   1 more example

   A 0.5-ml sample of the supernatant was put on a 6-ml activated, octadecyl solid-phase extraction cartridge (Bakerbond, J. T. Baker, Phillipsburg, NJ) and eluted with 2-ml volumes of H 2 O, 50% CH 3 CN (Low-UV HPLC grade, Burdick and Jackson) in H 2 O, and CH 3 CN. All fractions were concentrated to near dryness under vacuum (Speed Vac rotary concentrator, Savant Instruments, Farmingdale, NY) and redissolved in 0.5 ml of 50 mM pH 8 buffer, for bioassay.

   1997 May 9, H. T. Alborn et al., “An Elicitor of Plant Volatiles from Beet Armyworm Oral Secretion”, in Science, volume 276, number 5314, →DOI, pages 945–949