Carbon-13 Labeled Compounds

L-Lysine-13C6-15N2 Hydrochloride is L-Lysine hydrochloride labeled with 13C and 15N isotopes. L-Lysine hydrochloride is an essential amino acid for humans and a common food additive. It stimulates the secretion of pepsin and gastric acid, enhances gastric juice secretion, and promotes growth and development in children.

Phenol-13C6 is a 13C-labeled Phenol, which is an important chemical raw material used in the manufacture of fungicides and herbicides.

D-Fructose-13C6 can be used as an internal standard for the quantification of D-fructose by GC- or LC-MS.

L-Leucine-1-13C (L-Leucine-13C) is a 13C-labeled L-Leucine that significantly enhances the affinity of GLP-4.

Vancomycin-C13,D3 is a compound labeled with 13C and 2H. Vancomycin is a glycopeptide antibiotic that exerts antibacterial activity by altering cell membrane permeability and selectively inhibiting RNA synthesis.

Apalutamide-13C-d3 (RN-509-13C,d3) is a 13C and 2H-labeled version of Apalutamide. Apalutamide is an efficient androgen receptor (AR) antagonist used in the study of prostate diseases.

Riluzole-13C,15N2 (PK 26124-13C,15N2) is a 13C and 15N labeled form of Riluzole. Riluzole is a glutamate antagonist with anticonvulsant activity, inhibiting GABA reuptake and used in ALS research.

Binimetinib-13C-d3 (MEK162-13C-d3) is an isotopically labelled compound of Binimetinib for use as a tracer.Binimetinib (ARRY-162) is a selective MEK1/2 inhibitor for the treatment of melanoma.

Apixaban 13C,d3 is a deuterium labeling of Apixaban for isotopic tracing. Apixaban 13C,d3 is a selective inhibitor of coagulation factor Xa and is used in thromboembolism studies

Cyanuric acid-13C3 is a 13C-labelled compound of cyanuric acid, which can be used for isotope tracing. Cyanuric acid is a triazine compound, fungicide, and herbicide.

Erlotinib-13C6 (CP-358774-13C6) is a 13C-labeled Erlotinib. Erlotinib is a directly acting EGFR tyrosine kinase inhibitor, with an IC50 of 2 nM for human EGFR[1]. Erlotinib reduces EGFR autophosphorylation in intact tumor cells with an IC50 of 20 nM. Erlotinib is used for the treatment of non-small cell lung cancer[1].Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules, largely as tracers for quantitation during the drug development process[2]. [1]. Moyer JD, et al. Induction of apoptosis and cell cycle arrest by CP-358,774, an inhibitor of epidermal growth factor receptor tyrosine kinase. Cancer Res. 1997, 57(21), 4838-4848.[2]. Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019;53(2):211-216.

4-Trifluoromethylsalicylic acid-13C6 is 13C-labeled 4-Trifluoromethylsalicylic acid, mainly used as a quantitative tracer in drug development. 4-Trifluoromethylsalicylic acid is also a platelet aggregation inhibitor.

Oleic acid-13C is intended for use as an internal standard for the quantification of oleic acid by GC- or LC-MS. Oleic acid is a monounsaturated fatty acid and a major component of membrane phospholipids that has been found in human plasma, cell membranes, and adipose tissue.1,2 It contributes approximately 17% of the total fatty acids esterified to phosphatidylcholine, the major phospholipid class in porcine platelets.1 Oleic acid inhibits collagen-stimulated platelet aggregation by approximately 90% when used at a concentration of 10 μg/ml. It also inhibits fMLF-induced neutrophil aggregation and degranulation by 55 and 68%, respectively, when used at a concentration of 5 μM, similar to arachidonic acid .3 Oleic acid (60 μM) induces release of intracellular calcium in human platelets.4

2-Nitrobenzaldehyde semicarbazone (13C, 15N2) is utilized in the LC-MS/MS method for semicarbazide analysis.

1,2-Dioleoyl-rac-glycerol-13C3 is intended for use as an internal standard for the quantification of 1,2-dioleoyl-rac-glycerol by GC- or LC-MS. 1,2-dioleoyl-rac-glycerol is a diacylglycerol that contains oleic acid at the sn-1 and sn-2 positions. It effectively binds the C1 domain to activate conventional protein kinase C forms and serves as a substrate for diacylglycerol kinases and multisubstrate lipid kinase.1,2,3 |1. Yamaguchi, Y., Shirai, Y., Matsubara, T., et al. Phosphorylation and up-regulation of diacylglycerol kinase γ via its interaction with protein kinase Cγ. J. Biol. Chem. 281(42), 31627-31637 (2006).|2. Zhou, Q.Z., Raynor, R.L., Wood, M.G., Jr., et al. Structure-activity relationship of synthetic branched-chain distearoylglycerol (distearin) as protein kinase C activators. Biochemistry 27(19), 7361-7365 (1988).|3. Epand, R.M., Shulga, Y.V., Timmons, H.C., et al. Substrate chirality and specificity of diacylglycerol kinases and the multisubstrate lipid kinase. Biochemistry 46(49), 14225-14231 (2007).

Palmitic acid-13C is intended for use as an internal standard for the quantification of palmitic acid by GC- or LC-MS. Palmitic acid is a 16-carbon saturated fatty acid. It comprises approximately 25% of human total plasma lipids.1 It increases protein levels of COX-2 in RAW 264.7 cells when used at a concentration of 75 μM.2 Palmitic acid is involved in the acylation of proteins to anchor membrane-bound proteins to the lipid bilayer.2,3,4,5,6 |1. Santos, M.J., López-Jurado, M., Llopis, J., et al. Influence of dietary supplementation with fish oil on plasma fatty acid composition in coronary heart disease patients. Ann. Nutr. Metab. 39(1), 52-62 (1995).|2. Lee, J.Y., Sohn, K.H., Rhee, S.H., et al. Saturated fatty acids, but not unsaturated fatty acids, induced the expression of cyclooxygenase-2 mediated through toll-like receptor 4. J. Biol. Chem. 276(20), 16683-16689 (2001).|3. Dietzen, D.J., Hastings, W.R., and Lublin, D.M. Caveolin is palmitoylated on multiple cysteine residues. Palmitoylation is not necessary for localization of caveolin to caveolae. J. Biol. Chem. 270(12), 6838-6842 (1995).|4. Robinson, L.J., and Michel, T. Mutagenesis of palmitoylation sites in endothelial nitric oxide synthase identifies a novel motif for dual acylation and subcellular targeting. Proc. Nat. Acad. Sci. USA 92(25), 11776-11780 (1995).|5. Topinka, J.R., and Bredt, D.S. N-terminal palmitoylation of PSD-95 regulates association with cell membranes and interaction with K+ channel Kv1.4. Neuron 20(1), 125-134 (1998).|6. Miggin, S.M., Lawler, O.A., and Kinsella, B.T. Palmitoylation of the human prostacyclin receptor. Functional implications of palmitoylation and isoprenylation. J. Biol. Chem. 278(9), 6947-6958 (2003).

2,4-Dichlorophenol-13C6 the 13C and deuterated compound of 2,4-Dichlorophenol. 2,4-Dichlorophenol has a CAS number of 120-83-2. 2,4-Dichlorophenol is the precursor to the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D).

trans-Hydroxy Loxoprofen-13C-d3 (Mixture of Diastereomers) the 13C and deuterated compound of trans-Hydroxy Loxoprofen. trans-Hydroxy Loxoprofen has a CAS number of 371753-19-4.

Ethyl Acetate-13C2 is the 13C labeled compound of Ethyl Acetate. Ethyl Acetate has a CAS number of 141-78-6.

Nicergoline-13C-d3 the 13C and deuterated compound of Nicergoline. Nicergoline has a CAS number of 27848-84-6. Nicergoline is an ergot derivative used to treat senile dementia and other disorders with vascular origins.

Lercanidipine-13C-d3 HCl the 13C and deuterated compound of Lercanidipine HCl. Lercanidipine HCl has a CAS number of 132866-11-6. Lercanidipine is a calcium channel blocker of the dihydropyridine class.

Ondansetron-13C-d3 the 13C and deuterated compound of Ondansetron. Ondansetron has a CAS number of 99614-02-5. Ondansetron is a serotonin 5-HT3 receptor antagonist used mainly as an antiemetic.

Benzophenone-13C (carbonyl-13C) is the 13C labeled compound of Benzophenone. Benzophenone has a CAS number of 119-61-9.

13C-d3-AOH1996 is the 13C and deuterated compound of AOH1996. 13C-AOH1996 has a CAS number of 2089314-64-5. AOH1996 is an orally active ligand for the replicasome component PCNA (proliferating cell nuclear antigen), targeting the transcription-replication conflict (TRC).AOH1996 interferes with the interaction of PCNA with its binding proteins, leading to DNA replication stress and apoptosis.AOH1996 causes proteasome-dependent rpb1 degradation and lethal DNA damage by stabilizing the interaction between PCNA and RNA polymerase II.AOH1996 acts synergistically with DNA damaging agents to inhibit tumor cell growth. AOH1996 inhibits tumor cell growth by stabilizing the interaction between PCNA and RNA polymerase II, leading to proteasome-dependent rpb1 degradation and lethal DNA damage.AOH1996 acts synergistically with DNA damaging agents.