Immune System Disorder

Pimelic acid (Heptanedioic acid; 1,5-Pentanedicarboxylic acid) is a seven-carbon α,ω-dicarboxylic acid and a downstream product of fatty acid synthesis. Pimelic acid is a key precursor in biotin biosynthesis. Pimelic acid can be converted to pimelic acid-CoA by the BioW enzyme, thereby bypassing exogenous biotin requirements to support growth in various biotinytrophic bacteria and fungi, and reversing antibiotic-induced inhibition of biotin synthesis. Furthermore, Pimelic acid has been proposed as a highly specific biomarker for oxygen-induced retinopathy in mice. Pimelic acid can be used to study retinopathy of preterm infants, oxygen-induced retinopathy, and microbial biotin metabolism.

trans-Aconitic acid is an orally active aconitase inhibitor that non-competitively inhibits the conversion of citric acid to cis-aconitic acid and competitively inhibits the conversion of cis-aconitic acid to isocitric acid. trans-Aconitic acid inhibits the growth of Leishmania donovani promastigotes, the transformation of Leishmania donovani amastigotes to promastigotes, and the in vitro proliferation of Leishmania donovani amastigotes within macrophages in vitro. trans-Aconitic acid can be used in research related to visceral leishmaniasis (kala-azar).

4-Hydroxyhippuric acid is a metabolite of polyphenols. 4-Hydroxyhippuric acid is generated via medium-chain acyl-CoA dehydrogenase (MCAD)-dependent β-oxidation of microbially-produced 3-(4-hydroxyphenyl)propionic acid, followed by host glycine conjugation. 4-Hydroxyhippuric acid can be simultaneously detected in urine as a biomarker of dietary polyphenol intake.

Leukotriene C4 is a eicosanoid lipid mediator and produced by immune cells during type 2 inflammation. Leukotriene C4 can mediate inflammation,allergy, bronchoconstriction, and vascular leakage.

Xanthurenic acid (Standard) is the analytical standard of Xanthurenic acid. This product is intended for research and analytical applications. Xanthurenic acid is a putative endogenous Group II metabotropic glutamate receptor agonist, on sensory transmission in the thalamus.

β-Carotene (Standard) is the analytical standard of β-Carotene. This product is intended for research and analytical applications. β-Carotene (Provitamin A), a carotenoid compound, is a naturally-occurring vitamin A precursor. β-Carotene is a modulator of reactive oxygen species (ROS), with antioxidant and antiinflammatory activities. β-Carotene may serve as an antioxidant or as a prooxidant, depending on its intrinsic properties as well as on the redox potential of the biological environment in which it acts. β-Carotene induces breast cancer cells apoptosis, with anticancer activities.

4-Methyl-2-oxopentanoic acid (Standard) is the analytical standard of 4-Methyl-2-oxopentanoic acid. This product is intended for research and analytical applications. 4-Methyl-2-oxopentanoic acid (α-Ketoisocaproic acid), an abnormal metabolite, is both a neurotoxin and a metabotoxin.

5-Hydroxyindole-3-acetic acid (Standard) is the analytical standard of 5-Hydroxyindole-3-acetic acid. This product is intended for research and analytical applications. 5-Hydroxyindole-3-acetic acid is the main metabolite of serotonin or metanephrines, which can be used as a biomarker of neuroendocrine tumors.

Homovanillic acid (Standard) (Vanilacetic acid (Standard)) is the analytical standard of Homovanillic acid (HY-N0384). This product is intended for research and analytical applications. Homovanillic acid (Vanilacetic acid) is a dopamine metabolite found to be associated with aromatic L-amino acid decarboxylase deficiency, celiac disease, growth hormone deficiency, and sepiapterin reductase deficiency.

Thyroxine sulfate is a thyroid hormone metabolite.

L-Pyroglutamic acid (Standard) is the analytical standard of L-Pyroglutamic acid (HY-76082). This product is intended for research and analytical applications. L-Pyroglutamic acid is the levo-isomer of Pyroglutamic acid. L-Pyroglutamic acid is the biologically active enantiomer in humans. Pyroglutamic acid is an intermediate in glutathione metabolism. L-Pyroglutamic acid standard can be used as a biomarker for systemic lupus erythematosus (SLE).

1,5-Anhydrosorbitol is a short-term marker for glycemic control.

L-Hydroxyproline (Standard) is the analytical standard of L-Hydroxyproline. This product is intended for research and analytical applications. L-Hydroxyproline, one of the hydroxyproline (Hyp) isomers, is a useful chiral building block in the production of many pharmaceuticals.

2'-Deoxyadenosine (Standard) is the analytical standard of 2'-Deoxyadenosine (HY-W040329). This product is intended for research and analytical applications. 2′-Deoxyadenosine is an adenine nucleoside that inhibits glucose-stimulated insulin release. 2′-Deoxyadenosine inhibits glucose-stimulated increases seen in islet cyclic AMP (cAMP) accumulation. 2'-Deoxyadenosine activates caspase-3 and promotes apoptosis. 2'-Deoxyadenosine inhibits the activity of S-adenosyl-L-homocysteine hydrolase (SAHH). 2'-Deoxyadenosine inhibits the growth of various cells. 2'-Deoxyadenosine has an anticancer effect on colon cancer.

Pyridoxal phosphate (Standard) is the analytical standard of Pyridoxal phosphate. This product is intended for research and analytical applications. Pyridoxal phosphate is the active form of vitamin B6, acts as an inhibitor of reverse transcriptases, and is used for the treatment of tardive dyskinesia.

Theophylline (Standard) is the analytical standard of Theophylline. This product is intended for research and analytical applications. Theophylline (1,3-Dimethylxanthine) is a potent phosphodiesterase (PDE) inhibitor, adenosine receptor antagonist, and histone deacetylase (HDAC) activator. Theophylline (1,3-Dimethylxanthine) inhibits PDE3 activity to relax airway smooth muscle. Theophylline (1,3-Dimethylxanthine) has anti-inflammatory activity by increase IL-10 and inhibit NF-κB into the nucleus. Theophylline (1,3-Dimethylxanthine) induces apoptosis. Theophylline (1,3-Dimethylxanthine) can be used for asthma and chronic obstructive pulmonary disease (COPD) research.

Guanosine (Standard) is the analytical standard of Guanosine. This product is intended for research and analytical applications. Guanosine (DL-Guanosine) is a purine nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a β-N9-glycosidic bond. Guanosine possesses anti-HSV activity. In Vitro: Guanosine can be phosphorylated to become guanosine monophosphate (GMP), cyclic guanosine monophosphate (cGMP), guanosine diphosphate (GDP), and guanosine triphosphate (GTP). These forms play important roles in various biochemical processes such as synthesis of nucleic acids and proteins, photosynthesis, muscle contraction, and intracellular signal transduction (cGMP).

L-Thyroxine (Standard) is the analytical standard of L-Thyroxine. This product is intended for research and analytical applications. L-Thyroxine (Levothyroxine; T4) is a synthetic hormone for the research of hypothyroidism. DIO enzymes convert biologically active thyroid hormone (Triiodothyronine,T3) from L-Thyroxine (T4).

Ethylmalonic acid is a short-chain organic dicarboxylic acid. Ethylmalonic acid synergistically induces mitochondrial permeability transition (MP) with Ca²⁺, inhibits Mi-CK, and disrupts mitochondrial energy metabolism. Ethylmalonic acid can be used in the research of SCADD, EE and other genetic metabolic diseases characterized by EMA accumulation.

Methylmalonic acid (Standard) is the analytical standard of Methylmalonic acid. This product is intended for research and analytical applications. Methylmalonic acid (Methylmalonate) is an indicator of Vitamin B-12 deficiency in cancer.