1. Signaling Pathways
  2. Metabolic Enzyme/Protease
  3. Aldehyde Dehydrogenase (ALDH)

Aldehyde Dehydrogenase (ALDH)

Aldehyde Dehydrogenases (ALDHs) are a superfamily of NADP+-dependent enzymes that metabolize endogenous and exogenous aldehydes to corresponding carboxylic acids. This superfamily of proteins is comprised of 19 isozymes, with constitutive activity of at least one isozyme observed in a majority of mammalian tissues. The ALDHs play important roles, among other things, in cellular detoxification, the protection against ultraviolet radiation-induced damage, and amino acid metabolism.

The ALDH1A subfamily plays a pivotal role in embryogenesis and development by mediating retinoic acid signaling. ALDH2, as a key enzyme that oxidizes acetaldehyde, is crucial for alcohol metabolism. ALDH1A1 and ALDH3A1 are lens and corneal crystallins, which are essential elements of the cellular defense mechanism against ultraviolet radiation-induced damage in ocular tissues. Many ALDH isozymes are important in oxidizing reactive aldehydes derived from lipid peroxidation and thereby help maintain cellular homeostasis. Increased expression and activity of ALDH isozymes have been reported in various human cancers and are associated with cancer relapse. As a direct consequence of their significant physiological and toxicological roles, inhibitors of the ALDH enzymes have been developed to treat human diseases.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-B0240
    Disulfiram
    Inhibitor 99.92%
    Disulfiram (Tetraethylthiuram disulfide) is a specific inhibitor of aldehyde-dehydrogenase (ALDH1), used for the treatment of chronic alcoholism by producing an acute sensitivity to alcohol. Disulfiram inhibits gasdermin D (GSDMD) pore formation in liposomes and inflammasome-mediated pyroptosis and IL-1β secretion in human and mouse cells. Disulfiram + Cu2+ increases intracellular ROS levels triggering apoptosis of ovarian cancer stem cells[1-6].
    Disulfiram
  • HY-113466
    4-Hydroxynonenal
    Inhibitor ≥99.0%
    4-Hydroxynonenal (4-HNE) is an α,β unsaturated hydroxyalkenal and an oxidative/nitrosative stress biomarker. 4-Hydroxynonenal is a substrate and an inhibitor of acetaldehyde dehydrogenase 2 (ALDH2). 4-Hydroxynonenal can modulate a number of signaling processes mainly through forming covalent adducts with nucleophilic functional groups in proteins, nucleic acids, and membrane lipids. 4-Hydroxynonenal plays an important role in cancer through mitochondria.
    4-Hydroxynonenal
  • HY-18936
    Alda-1
    Agonist 99.99%
    Alda-1 is a potent and selective ALDH2 agonist, which activates wild-type ALDH2 and restores near wild-type activity to ALDH2*2.
    Alda-1
  • HY-N0018
    Daidzin
    Inhibitor 99.77%
    Daidzin is an isoflavone with antioxidant, anticancer, and antiatherosclerotic activities. Daidzin is a potent and selective inhibitor of mitochondrial ALDH-2. Daidzin reduces ethanol consumption.
    Daidzin
  • HY-138097
    α-NETA
    Antagonist ≥98.0%
    α-NETA is a potent and noncompetitive choline acetyltransferase (ChA) inhibitor with an IC50 of 9 μM. α-NETA is a potent ALDH1A1 (IC50=0.04 µM) and chemokine-like receptor-1 (CMKLR1) antagonist. α-NETA weakly inhibits cholinesterase (ChE; IC50=84 µM) and acetylcholinesterase (AChE; IC50=300 µM). α-NETA has anti-cancer activity.
    α-NETA
  • HY-156443
    YG1702
    Inhibitor
    YG1702 is a potent ALDH18A1-specific inhibitor. YG1702 attenuates the growth of MYCN-amplified NB and down-regulates MYCN. YG1702 physically interacts with ALDH18A1 with a high affinity and might potentially affect its enzymatic activity.
    YG1702
  • HY-157872
    ALDH1A1-IN-4
    Inhibitor
    ALDH1A1-IN-4 (compound A1) is a potent inhibitor of aldehyde dehydrogenase (ALDH) A1, with IC50 value of 0.32 μM. ALDH1A1-IN-4 plays an important role in cancer research.
    ALDH1A1-IN-4
  • HY-122912
    ALDH1A inhibitor 673A
    Inhibitor
    ALDH1A inhibitor 673A is an ALDH1A inhibitor. ALDH1A inhibitor 673A inhibits all three ALDH1A family members (IC50: 246 nM, 230 nM, 348 nM for ALDH1A1, ALDH1A2, ALDH1A3 respectively. ALDH1A inhibitor 673A induces necroptotic cell death preferentially in CD133+ ovarian CSCs. ALDH1A inhibitor 673A also inhibits chemotherapy-resistant tumor growth.
    ALDH1A inhibitor 673A
  • HY-W016645
    4-Diethylaminobenzaldehyde
    Inhibitor 99.59%
    4-Diethylaminobenzaldehyde is a reversible aldehyde dehydrogenases (ALDHs) inhibitor, with a Ki of 4 nM for ALDH1. 4-Diethylaminobenzaldehyde displays potent anti-androgenic effect (IC50= 1.71μM).
    4-Diethylaminobenzaldehyde
  • HY-W011094
    Win 18446
    Inhibitor 98.57%
    Win 18446 is an orally active testes-specific enzyme ALDH1a2 inhibitor, with an IC50 of 0.3 μM. Win 18446 reversibly inhibits spermatogenesis in many species and inhibits Retinoic acid (HY-14649) biosynthesis from Retinol (HY-B1342) within the testes.
    Win 18446
  • HY-B0364A
    Dyclonine hydrochloride
    Inhibitor 99.86%
    Dyclonine (Dyclocaine) hydrochloride is an orally effective ALDH covalent inhibitor (crosses blood-brain barrier), with an IC50 of 35 µM for ALDH2 and 76 µM for ALDH3A1. Dyclonine hydrochloride has sensitizing activities for targeted cancer cells and antibacterial. Dyclonine hydrochloride is also a local anesthetic that blocks the transmission of various nerve impulses or stimuli and inhibits the sensation of touch and pain.
    Dyclonine hydrochloride
  • HY-18768
    NCT-501
    Inhibitor 99.84%
    NCT-501 is a potent and selective theophylline-based inhibitor of aldehyde dehydrogenase 1A1 (ALDH1A1), inhibits hALDH1A1 with IC50 of 40 nM, typically shows better selectivity over other ALDH isozymes and other dehydrogenases (hALDH1B1, hALDH3A1, and hALDH2, IC50 >57 μM).
    NCT-501
  • HY-19801
    CVT-10216
    Inhibitor ≥99.0%
    CVT-10216 is a highly selective, reversible aldehyde dehydrogenase-2 (ALDH-2) inhibitor with an IC50 of 29 nM. CVT-10216 also has inhibitory effect of ALDH-1 with an IC50 of 1.3 μM. CVT-10216 can reduce excessive alcohol drinking in alcohol-preferring rats and exhibit anxiolytic effects.
    CVT-10216
  • HY-P2947
    ALDH
    ALDH (Aldehyde dehydrogenase (NAD(P))) catalyzes the oxidation of aldehydes into their corresponding carboxylic acids with the concomitant reduction of the cofactor NAD(P) into NAD(P)H, is often used in biochemical studies. The ALDHs are one of many enzyme systems the body utilizes to alleviate aldehyde stress.
    ALDH
  • HY-W017186
    ALDH1A3-IN-3
    Inhibitor 99.12%
    ALDH1A3-IN-3 (compound 16) is a potent inhibitor of ALDH1A3, with an IC50 of 0.26 μM. ALDH1A3-IN-3 is also a good ALDH3A1 substrate. ALDH1A3-IN-3 can be used for the research of prostate cancer.
    ALDH1A3-IN-3
  • HY-N2597
    Prunetin
    Inhibitor 99.01%
    Prunetin, an O-methylated isoflavone, possesses anti-inflammatory activity. Prunetin is a potent human aldehyde dehydrogenases inhibitor.
    Prunetin
  • HY-148466
    IGUANA-1
    Inhibitor 98.88%
    IGUANA-1 is a potent inhibitor of ALDH1B1, which is a mitochondrial enzyme that promotes colorectal and pancreatic cancer. IGUANA-1 has significant inhibition against cancer cells.
    IGUANA-1
  • HY-135841
    CM10
    Inhibitor 98.07%
    CM10 is a potent and selective aldehyde dehydrogenase 1A (ALDH1A) family inhibitor, with IC50s of 1700, 740, and 640 nM for ALDH1A1, ALDH1A2, and ALDH1A3, respectively. CM10 does not inhibit any of the other ALDH family members. CM10 can regulate metabolism and has anti-cancer activity.
    CM10
  • HY-76006
    3-Hydroxybenzaldehyde
    99.85%
    3-Hydroxybenzaldehyde is a precursor compound for phenolic compounds, such as Protocatechualdehyde (HY-N0295). 3-Hydroxybenzaldehyde is a substrate of aldehyde dehydrogenase (ALDH) in rats and humans (ALDH2). 3-Hydroxybenzaldehyde has vasculoprotective effects in vitro and in vivo.
    3-Hydroxybenzaldehyde
  • HY-144667
    ALDH1A3-IN-1
    Inhibitor 98.43%
    ALDH1A3-IN-1 (Compound 14) is a potent ALDH1A3 inhibitor, with an IC50 of 0.63 µM and a Ki of 0.46 µM. ALDH1A3-IN-1 can be studied in prostate cancer.
    ALDH1A3-IN-1
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