1alpha, 25dihydroxy vd2d6

1alpha, 25-Dihydroxy VD2-D6 is a deuterated form of vitamin D.

1-Palmitoyl-d9-2-palmitoyl-sn-glycero-3-PE serves as an internal standard for the quantification of 1,2-dipalmitoyl-sn-glycero-3-PE (1,2-DPPE) using GC- or LC-MS. 1,2-DPPE, a prevalent PE (phospholipid), contains C16:0 fatty acids at the sn-1 and sn-2 positions and is essential in the inner plasma membrane leaflet. This compound forms a condensed lipid monolayer with cholesterol through tight hydrogen bonding between 1,2-DPPE headgroups, enhancing membrane fluidity to support transport and signaling.

(1'S,2'S)-Nicotine-1'-Oxide-d3 is a deuterated compound of (1'S,2'S)-Nicotine-1'-Oxide. (1'S,2'S)-Nicotine-1'-Oxide has a CAS number of 51095-86-4. Nicotine 1'-N-oxide is a natural product from tobacco smoke.

6-methyl-2-heptanone-d5 is a deuterated compound of 6-methyl-2-heptanone. 6-methyl-2-heptanone has a CAS number of 928-68-7.

1-Palmitoyl-d9-2-palmitoyl-sn-glycerol serves as an internal standard for quantifying 1,2-dipalmitoyl-sn-glycerol using GC or LC-MS techniques. This diacylglycerol, featuring palmitic acid at both the sn-1 and sn-2 positions, stimulates protein kinase C (PKC) activity by 15% at a 25 μM concentration. Additionally, 1,2-dipalmitoyl-sn-glycerol encourages rapid growth in Frankia, a genus of Gram-positive bacteria.

1-1(Z)-Hexadecenyl-2-palmitoyl-d9-sn-glycero-3-PE serves as an internal standard for quantitating 1-1(Z)-hexadecenyl-2-palmitoyl-sn-glycero-3-PE, which is a plasmalogen incorporating 1(Z)-hexadecanoic acid and palmitic acid at the sn-1 and sn-2 positions respectively, in analyses performed using GC- or LC-MS.

1-Palmitoyl-d9-2-hydroxy-sn-glycero-3-PE serves as an internal standard for quantifying 1-palmitoyl-2-hydroxy-sn-glycero-3-PE, a lysophospholipid naturally found to inhibit L. donovani promastigotes growth (GI50= 8 µM). Its levels are reduced in mice after alcohol-induced liver damage, in hepatocellular carcinoma mouse xenografts, and in humans following a rigorous three-day exercise regimen of 2.5 hours running daily and 14 hours post-regimen. This compound is also applied in measuring saturated lysophosphoethanolamines, highlighting its broad utility in biochemical research and disease model studies.

1, 14-tetradecanedioic-2, 2, 13, 13-d4 acid is a deuterated compound of 1, 14-tetradecanedioic acid. 1, 14-tetradecanedioic acid has a CAS number of 821-38-5. Tetradecanedioic acid is a C14 dicarboxylic acid.

2-(1-(methyl-d3)-1H-imidazol-4-yl)ethan-1-amine 2HCl is a deuterated compound of 2-(1-(methyl)-1H-imidazol-4-yl)ethan-1-amine 2HCl. 2-(1-(methyl)-1H-imidazol-4-yl)ethan-1-amine 2HCl has a CAS number of 6481-48-7. 1-Methylhistamine dihydrochloride is a major metabolite of histamine by histamine N-methyltransferase in the pathway of histidine metabolism. It has been used as a biomarker of histaminergic system activity in the brains of Alzheimer's disease patients as well as those with hypersomnia and other neurological conditions.

2-chloro-6-methylbenzoic acid-d3 is a deuterated compound of 2-chloro-6-methylbenzoic acid. 2-chloro-6-methylbenzoic acid has a CAS number of 21327-86-6.

1-Palmitoyl-d9-2-hydroxy-sn-glycero-3-PA (1-palmitoyl-d9LPA) serves as an internal standard for the quantification of 1-palmitoyl LPA using GC- or LC-MS. This compound, an analog of LPA with palmitic acid at the sn-1 position, activates reporter gene expression in PC12 cells fitted with human lysophosphatidic acid receptor 4 (LPA4) at 0.01 to 10 µM concentrations. Additionally, 1-palmitoyl LPA prompts aggregation in isolated human platelets within the 12-300 µM range, a process reversible by prostaglandin E1 (PGE1), theophylline, or EDTA. It also interacts with calcium and magnesium to boost the efficacy of ampicillin, piperacillin, and ceftazidime against P. aeruginosa strains from cystic fibrosis patients.