2. Reference Standards
  3. Metabolism Standards
  4. Drug Metabolite Standards

Drug Metabolite Standards

A drug metabolite is a byproduct of the body breaking down, or “metabolizing” a drug into a different substance. Most drugs undergo chemical alteration by various bodily systems as a way to create compounds that are more easily excreted from the body. Drug metabolism can produce metabolites with physicochemical and pharmacological properties that differ substantially from those of the parent drug, and consequently have important implications for both drug safety and efficacy.

Drug Metabolite Standards (219):

Cat. No. Product Name CAS No. Purity Chemical Structure
  • HY-13704R
    SN-38 (Standard) 86639-52-3
    SN-38 (Standard) is the analytical standard of SN-38. This product is intended for research and analytical applications. SN-38 is an active metabolite of the Topoisomerase I inhibitor Irinotecan. SN-38 inhibits DNA and RNA synthesis with IC50s of 0.077 and 1.3 μM, respectively. SN-38 is a payload of sacituzumab govitecan (HY -132254).
    SN-38 (Standard)
  • HY-N0384R
    Homovanillic acid (Standard) 306-08-1
    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.
    Homovanillic acid (Standard)
  • HY-W001080R
    3,4-Dihydroxybenzeneacetic acid (Standard) 102-32-9
    3,4-Dihydroxybenzeneacetic acid (Standard) is the analytical standard of 3,4-Dihydroxybenzeneacetic acid. This product is intended for research and analytical applications. 3,4-Dihydroxybenzeneacetic acid is the main neuronal metabolite of dopamine.
    3,4-Dihydroxybenzeneacetic acid (Standard)
  • HY-113121R
    Vanillylmandelic acid (Standard) 55-10-7
    Vanillylmandelic acid (Standard) is the analytical standard of Vanillylmandelic acid. This product is intended for research and analytical applications. Vanillylmandelic acid is the endproduct of epinephrine and norepinephrine metabolism. Vanillylmandelic acid can be used as an indication of the disorder in neurotransmitter metabolism as well. Vanillylmandelic acid has antioxidant activity towards DPPH radical with an IC50 value of 33 μM.
    Vanillylmandelic acid (Standard)
  • HY-138253R
    2′,2′-Difluorodeoxyuridine (Standard) 114248-23-6
    2′,2′-Difluorodeoxyuridine (Standard) is the analytical standard of 2′,2′-Difluorodeoxyuridine. This product is intended for research and analytical applications. 2’,2’-Difluorodeoxyuridine (dFdU) is the main metabolite of Gemcitabine (HY-17026). 2’,2’-Difluorodeoxyuridine causes a concentration- and schedule- dependent radiosensitising effect in vitro. 2’,2’-Difluorodeoxyuridine arrests cell cycle at the early S phase and induces apoptosis in cancer cells.
    2′,2′-Difluorodeoxyuridine (Standard)
  • HY-130189R
    S-Phenylmercapturic acid (Standard) 4775-80-8
    S-Phenylmercapturic acid (Standard) is the analytical standard of S-Phenylmercapturic acid. This product is intended for research and analytical applications. S-Phenylmercapturic acid, a metabolite of benzene, can be used as a biomarker, identified by GC, HPLC (UV or fluorescence detection), GC-MS, LC-MS/MS or immunoassay.
    S-Phenylmercapturic acid (Standard)
  • HY-B0199R
    Mycophenolate Mofetil (Standard) 128794-94-5
    Mycophenolate Mofetil (Standard) is the analytical standard of Mycophenolate Mofetil. This product is intended for research and analytical applications. Mycophenolate mofetil (RS 61443; TM-MMF) hydrochloride is an orally active antimetabolic immunosuppressant with antiproliferative and anti-inflammatory properties. Mycophenolate mofetil hydrochloride significantly inhibits the production of B, T lymphocytes and the proliferation of smooth muscle cells by selectively blocking the de novo purine synthesis pathway. Mycophenolate mofetil hydrochloride effectively reduces adventitial inflammation, medial necrosis and intimal thickening in rat aortic allografts, and decreases the number of lymphocytes expressing the IL-2 receptor, thereby delaying xenograft rejection. Mycophenolate mofetil hydrochloride shows certain toxicity in a hamster-to-rat limb xenotransplantation model when used in combination with FK506 (HY-13756). Mycophenolate mofetil hydrochloride is widely used in studies related to allograft arteriosclerosis (chronic rejection).
    Mycophenolate Mofetil (Standard)
  • HY-17366R
    Clozapine N-oxide (Standard) 34233-69-7
    Clozapine N-oxide (Standard) is the analytical standard of Clozapine N-oxide. This product is intended for research and analytical applications. Clozapine N-oxide is a major metabolite of Clozapine and a human muscarinic designer receptors (DREADDs) agonist. Clozapine N-oxide activates the DREADD receptor hM3Dq and hM4Di. Clozapine N-oxide cannot cross the blood-brain barrier[1][2][3][4]. Clozapine is a potent dopamine antagonist and also a potent and selective muscarinic M4 receptor (EC50=11 nM) agonist[5][6].
    Clozapine N-oxide (Standard)
  • HY-B1109R
    N-Acetylprocainamide (Standard) 32795-44-1
    Cimetidine (hydrochloride) (Standard) is the analytical standard of Cimetidine (hydrochloride). This product is intended for research and analytical applications. Cimetidine (SKF-92334) hydrochloride is an orally active and inverse histamine H2 receptor antagonist with a Ki of 0.6 μM. Cimetidine hydrochloride is a gastric acid reducer, and can be used for duodenal and gastric ulcers research. Cimetidine hydrochloride has anti-cancer and anti-inflammatory activity.
    N-Acetylprocainamide (Standard)
  • HY-N7143R
    Monobutyl phthalate (Standard) 131-70-4
    Monobutyl phthalate (Standard) is the analytical standard of Monobutyl phthalate. This product is intended for research and analytical applications. Monobutyl phthalate, a major metabolite of dibutyl phthalate (DBP), possesses antiandrogenic effects. Monobutyl phthalate is an embryotoxicant.
    Monobutyl phthalate (Standard)
  • HY-107856R
    5-Fluorouridine (Standard) 316-46-1
    5-Fluorouridine (Standard) is the analytical standard of 5-Fluorouridine. This product is intended for research and analytical applications. 5-Fluorouridine, a metabolite of5-Fluorouracil (HY-90006), is a potent ribozyme self-cleavage inhibitor. 5-Fluorouridine incorporates into both total and poly A RNA and has antiproliferative activity. 5-Fluorouridine induces apoptosis.
    5-Fluorouridine (Standard)
  • HY-B1398R
    Ampyrone (Standard) 83-07-8
    Ampyrone (4-Aminophenazone) (Standard) is the analytical standard of Ampyrone (HY-B1398). This product is intended for research and analytical applications. Ampyrone (4-Aminophenazone; 4-Aminoantipyrine) is a reversible and low-damage optical clearing agent and non-selective COX inhibitor based on UV absorption properties. Ampyrone can improve the optical transmittance of mouse skin and other tissues. Ampyrone can induce tissue refractive index matching by enhancing UV absorption, reduce light scattering, and achieve tissue transparency in vivo. Ampyrone reduces the synthesis of prostaglandin PGE2, thereby exerting anti-inflammatory, analgesic and antipyretic effects. Ampyrone inhibits DNA damage, cell apoptosis and immune cell phagocytosis induced by Doxorubicin (HY-15142A) and Cisplatin (HY-17394), etc., and participates in the regulation of toxicity in tumor chemotherapy.
    Ampyrone (Standard)
  • HY-100639R
    Roflumilast N-oxide (Standard) 292135-78-5
    Roflumilast N-oxide (Standard) is the analytical standard of Roflumilast N-oxide. This product is intended for research and analytical applications. Roflumilast N-oxide is a PDE type 4 inhibitor.
    Roflumilast N-oxide (Standard)
  • HY-A0115R
    Ramiprilat (Standard) 87269-97-4
    Alvimopan (dihydrate) (Standard) is the analytical standard of Alvimopan (dihydrate). This product is intended for research and analytical applications. Alvimopan dihydrate (ADL 8-2698 dihydrate) is a potent, selective, orally active and reversible μ-opioid receptor antagonist, with an IC50 of 1.7 nM. Alvimopan dihydrate has selectivity for μ-opioid receptor (Ki=0.47 nM) over κ- and δ-opioid receptors (Kis=100, 12 nM, respectively). Alvimopan dihydrate can be used for the research of postoperative ileus.
    Ramiprilat (Standard)
  • HY-100635R
    Diacetolol (Standard) 22568-64-5
    Oleic acid (Standard) is the analytical standard of Oleic acid. This product is intended for research and analytical applications. Oleic acid (9-cis-Octadecenoic acid) is an abundant monounsaturated fatty acid. Oleic acid is a Na+/K+ ATPase activator.
    Diacetolol (Standard)
  • HY-12772R
    Hydroxy Itraconazole (Standard) 112559-91-8
    Levetiracetam (Standard) is the analytical standard of Levetiracetam. This product is intended for research and analytical applications. Levetiracetam, an antiepileptic agent, binds the synaptic vesicle protein SV2A. Levetiracetam enhances Temozolomide effect on glioblastoma stem cell proliferation and apoptosis. Levetiracetam modulates HDAC levels ultimately silencing MGMT, thus increasing Temozolomide effectiveness. A chemosensitizer agent.
    Hydroxy Itraconazole (Standard)
  • HY-101407R
    Nicotinamide N-oxide (Standard) 1986-81-8
    Nicotinamide N-oxide (Standard) is the analytical standard of Nicotinamide N-oxide. This product is intended for research and analytical applications. Nicotinamide N-oxide, an in vivo nicotinamide metabolite, is a potent, and selective antagonist of the CXCR2 receptor.
    Nicotinamide N-oxide (Standard)
  • HY-W014993R
    1,3-Dimethyluric acid (Standard) 944-73-0
    1,3-Dimethyluric acid (Standard) is the analytical standard of 1,3-Dimethyluric acid. This product is intended for research and analytical applications. 1,3-Dimethyluric acid is a product of theophylline metabolism in man. 1,3-Dimethyluric acid is one of the purine components in urinary calculi.
    1,3-Dimethyluric acid (Standard)
  • HY-W016498R
    Paraxanthine (Standard) 611-59-6
    Paraxanthine (Standard) is the analytical standard of Paraxanthine. This product is intended for research and analytical applications. Paraxanthine, a caffeine metabolite, provides protection against Dopaminergic cell death via stimulation of Ryanodine Receptor Channels.
    Paraxanthine (Standard)
  • HY-B2124R
    10,11-Dihydrocarbamazepine (Standard) 3564-73-6
    10,11-Dihydrocarbamazepine (Standard) is the analytical standard of 10,11-Dihydrocarbamazepine. This product is intended for research and analytical applications. 10,11-Dihydrocarbamazepine is the active metabolite of Oxcarbazepine. 10,11-Dihydrocarbamazepine also is an intermediate. Oxcarbazepine is rapidly and almost completely converted to 10,11-Dihydrocarbamazepine with probable Anticonvulsant efficacy.
    10,11-Dihydrocarbamazepine (Standard)