1. Isotope-Labeled Compounds
  2. Internal Standard for Clinical Mass Spectrometry
  3. Therapeutic Drug Monitoring: TDM

Therapeutic Drug Monitoring: TDM

Therapeutic drug monitoring (TDM) is testing that measures the amount of certain medicines in your blood. It is done to make sure the amount of medicine you are taking is both safe and effective. Most medicines can be dosed correctly without special testing. But for certain types of medicines, it can be hard to figure out a dose that provides enough medicine to treat your condition without causing dangerous side effects. TDM helps your provider find out if you are taking the right dose of your medicine. Total drug concentrations in plasma, blood, and tissues can be measured in various ways. Because of selectivity, sensitivity, and ease of use, liquid chromatography-tandem mass spectrometry (LC-MS/MS) is the most common analytical choice. Stable isotope-labeled drugs have become the gold standard for mass spectrometry detection because of their high sensitivity and lack of matrix effects[1][2].



[1] Anal Chem. 2021 Jun 1; 93 (21):7616-7624.

[2] Eur J Clin Pharmacol. 2021 Apr;77(4):441-464.

Therapeutic Drug Monitoring: TDM (3253):

Cat. No. Product Name CAS No. Purity Chemical Structure
  • HY-10201S
    Sorafenib-d3 1130115-44-4 99.57%
    Sorafenib-d3 (Donafenib), a deuterated compound of Sorafenib, is the first deuterium-generation tumor suppressor small molecule. Sorafenib is a multikinase inhibitor IC50s of 6 nM, 20 nM, and 22 nM for Raf-1, B-Raf, and VEGFR-3, respectively.
  • HY-19939S
    VX-984 1476074-39-1 98.86%
    VX-984 is an orally active, potent, selective and BBB-penetrated DNA-PK inhibitor. VX-984 efficiently inhibits NHEJ (non-homologous end joining) and increases DSBs (DNA double-strand breaks). VX-984 can be used for glioblastomas (GBM) and non-small cell lung cancer (NSCLC) research. VX-984 is a de novo deuterium.
  • HY-100807S
    Quinolinic acid-d3 138946-42-6 99.90%
    Quinolinic acid-d3 is the deuterium labeled Quinolinic acid. Quinolinic acid is an endogenous N-methyl-D-aspartate (NMDA) receptor agonist synthesized from L-tryptophan via the kynurenine pathway and thereby has the potential of mediating N-methyl-D-aspartate neuronal damage and dysfunction[1][2].
    Quinolinic acid-d<sub>3</sub>
  • HY-131968
    BMS-986202 1771691-34-9 99.92%
    BMS-986202 is a potent, selective and orally active Tyk2 inhibitor that binds to Tyk2 JH2 with an IC50 value of 0.19 nM and a Ki of 0.02 nM. BMS-986202 is remarkably selective over other kinases including Jak family members. BMS-986202 is also a weak inhibitor of CYP2C19 with an IC50 value of 14 μM. BMS-986202 can be used for IL-23-driven acanthosis, anti-CD40-induced colitis, and spontaneous lupus research. BMS-986202 is a de novo deuterium.
  • HY-18569S
    3-Indoleacetic acid-d5 76937-78-5 99.84%
    3-Indoleacetic acid-d5 is the deuterium labeled 3-Indoleacetic acid. 3-Indoleacetic acid-d5 can be used as internal standard for assay of IAA releases by alkaline hydrolysis of ester and amide conjugates[1].
    3-Indoleacetic acid-d<sub>5</sub>
  • HY-101410S
    SDMA-d6 1331888-08-4 99.03%
    SDMA-d6 is the deuterium labeled SDMA. SDMA (Symmetric dimethylarginine) is an endogenous inhibitor of nitric oxide (NO) synthase activity[1][2].
  • HY-B0617S
    S-Adenosyl-L-methionine-d3 68684-40-2 98.05%
    S-Adenosyl-L-methionine-d3 is the deuterated product of S-Adenosyl-L-methionine. S-Adenosyl-L-methionine is endogenously produced from methionine and ATP through the action of methionine adenosyltransferase and is an important orally active methyl donor.
  • HY-N0390S2
    L-Glutamine-d5 14341-78-7 ≥98.0%
    L-Glutamine-d5 is the deuterium labeled L-Glutamine. L-Glutamine (L-Glutamic acid 5-amide) is a non-essential amino acid present abundantly throughout the body and involved in many metabolic processes. L-Glutamine provides a source of carbons for oxidation in some cells[1][2].
  • HY-108872S
    Water-18O 14314-42-2 99.99%
    Water-18O is the 18O-labeled Water[1].
  • HY-D0843S
    N-Ethylmaleimide-d5 360768-37-2 99.49%
    N-Ethylmaleimide-d5 is the deuterium labeled N-Ethylmaleimide. N-Ethylmaleimide (NEM), a reagent that alkylates free sulfhydryl groups, is a cysteine protease inhibitor[1]. N-ethylmaleimide specific inhibits phosphate transport in mitochondria[2]. N-Ethylmaleimide is also a deubiquitinating enzyme inhibitor[3].
  • HY-15531S
    Venetoclax-d8 1257051-06-1 99.76%
    Venetoclax-d8 is deuterium labeled Venetoclax. Venetoclax (ABT-199; GDC-0199) is a highly potent, selective and orally bioavailable Bcl-2 inhibitor with a Ki of less than 0.01 nM. Venetoclax induces autophagy[1][2][3].
  • HY-78131S
    Ibuprofen-d3 121662-14-4 99.18%
    Ibuprofen-d3 is a deuterium labeled Ibuprofen. Ibuprofen is a COX-1 and COX-2 inhibitor with IC50s of 13 μM and 370 μM[1].
  • HY-100806S
    Kynurenic acid-d5 350820-13-2 98.35%
    Kynurenic acid-d5 is the deuterium labeled Kynurenic acid. Kynurenic acid, an endogenous tryptophan metabolite, is a broad-spectrum antagonist targeting NMDA, glutamate, α7 nicotinic acetylcholine receptor. Kynurenic acid is also an agonist of GPR35/CXCR8[1][2].
    Kynurenic acid-d<sub>5</sub>
  • HY-N0390S
    L-Glutamine-15N 80143-57-3 ≥98.0%
    L-Glutamine-15N is the 15N-labeled L-Glutamine. L-Glutamine (L-Glutamic acid 5-amide) is a non-essential amino acid present abundantly throughout the body and involved in many metabolic processes. L-Glutamine provides a source of carbons for oxidation in some cells[1][2].
  • HY-N0322S
    Cholesterol-d7 83199-47-7 98.29%
    Cholesterol-d7 is the deuterium labeled Cholesterol. Cholesterol is the major sterol in mammals. It is making up 20-25% of structural component of the plasma membrane. Plasma membranes are highly permeable to water but relatively impermeable to ions and protons. Cholesterol plays an important role in determining the fluidity and permeability characteristics of the membrane as well as the function of both the transporters and signaling proteins. Cholesterol is also an endogenous estrogen-related receptor α (ERRα) agonist.
  • HY-13704S
    SN-38-d3 718612-49-8 99.07%
    SN-38-d3 is the deuterium labeled SN-38. SN-38 (NK012) is an active metabolite of the Topoisomerase I inhibitor Irinotecan. SN-38 (NK012) inhibits DNA and RNA synthesis with IC50s of 0.077 and 1.3 μM, respectively[1][2][3][4].
  • HY-66005S
    Acetaminophen-d4 64315-36-2 99.38%
    Acetaminophen-d4 is the deuterium labeled Acetaminophen. Acetaminophen (Paracetamol) is a selective cyclooxygenase-2 (COX-2) inhibitor with an IC50 of 25.8 μM; is a widely used antipyretic and analgesic agent[1][2][3]. Acetaminophen is a potent hepatic N-acetyltransferase 2 (NAT2) inhibitor[4].
  • HY-145119AS
    Mindeudesivir hydrobromide 2779498-79-0 99.46%
    Mindeudesivir (JT001; VV116; GS-621763-d1) hydrobromide is a deuterated version of Remdesivir (HY-104077), a highly orally active nucleoside antiviral against SARS-CoV-2 and respiratory syncytial virus (RSV). Mindeudesivir hydrobromide retains the antiviral activity of Remdesivir against COVID-19, and is the first domestically produced deuterium targeting the COVID-19.
    Mindeudesivir hydrobromide
  • HY-15550S
    4'-Hydroxy diclofenac-d4 254762-27-1 98.92%
    4'-Hydroxy diclofenac-d4 is the deuterium labeled 4'-Hydroxy diclofenac. 4'-Hydroxy diclofenac is an orally active metabolite of Diclofenac (HY-15036) by cytochrome P450 2C9 (CYP2C9). 4'-Hydroxy diclofenac has anti-inflammatory and analgesic properties[1][2].
    4'-Hydroxy diclofenac-d<sub>4</sub>
  • HY-10219S
    Rapamycin-d3 392711-19-2
    Rapamycin-d3 is the deuterium labeled Rapamycin. Rapamycin is a potent and specific mTOR inhibitor with an IC50of 0.1 nM in HEK293 cells. Rapamycin binds to FKBP12 and specifically acts as an allosteric inhibitor of mTORC1[1]. Rapamycin is an autophagy activator, an immunosuppressant[2].