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.

Aldehyde Dehydrogenase (ALDH) Related Products (33):

Cat. No. Product Name Effect Purity
  • HY-B0240
    Inhibitor 99.77%
    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].
  • HY-18936
    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.
  • HY-113466
    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.
  • HY-138097
    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.
  • HY-18768
    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).
  • HY-144669
    ALDH1A3-IN-2 (Compound 15) is a potent inhibitor of ALDH1A3 with an IC50 of 1.29 μM. Aldehyde dehydrogenases (ALDHs) are overexpressed in various tumor types including prostate cancer. ALDH1A3-IN-2 has the potential for the research of cancer diseases.
  • HY-146683
    KS106 is a potent ALDH inhibitor with IC50s of 334, 2137, 360 nM for ALDH1A1, ALDH2, and ALDH3A1, respectively. KS106 shows antiproliferative and anticancer effects with low low toxic.KS106 significantly increases ROS activity, lipid peroxidation and toxic aldehyde accumulation. KS106 induces apoptosis and cell cycle arrest at the G2/M phase.
  • HY-144670
    ALDH3A1-IN-1 (Compound 18) is a potent inhibitor of ALDH3A1 with an IC50 of 1.61 μM. ALDH3A1-IN-1 is more potent than DEAB against patient-derived primary prostate tumor epithelial cells, as single agents or in combination treatment with docetaxel.
  • 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.
  • HY-W016645
    Inhibitor 98.82%
    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).
  • HY-B0364A
    Dyclonine hydrochloride
    Inhibitor 98.39%
    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.
  • HY-19801
    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.
  • HY-122577
    EN40 is a potent, selective aldehyde dehydrogenase 3A1 (ALDH3A1) inhibitor as a covalent ligand, exhibits an IC50 value of 2 uM
  • HY-135841
    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.
  • HY-W017186
    Inhibitor 98.87%
    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.
  • HY-76006
    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.
  • HY-N2597
    Inhibitor 99.01%
    Prunetin, an O-methylated isoflavone, possesses anti-inflammatory activity. Prunetin is a potent human aldehyde dehydrogenases inhibitor.
  • HY-112278
    Inhibitor 99.44%
    NCT-506 is an orally bioavailable aldehyde dehydrogenase 1A1 (ALDH1A1) inhibitors with an IC50 of 7 nM.
  • HY-112277
    Inhibitor 98.41%
    NCT-505 is a potent and selective aldehyde dehydrogenase (ALDH1A1) inhibitor, with an IC50 of 7 nM, and weakly inhibits hALDH1A2, hALDH1A3, hALDH2, hALDH3A1 (IC50s, >57, 22.8, 20.1, >57 μM).
  • HY-126003
    Inhibitor 99.48%
    ALDH1A1-IN-2 is a potent inhibitor of aldehyde dehydrogenase 1a1 (aldh1a1). Aldehyde dehydrogenases (ALDH) constitute a family of enzymes that play a critical role in oxidizing various cytotoxic xenogenic and biogenic aldehydes. ALDH1A1-IN-2 has the potential for the research of cancer, inflammation, or obesity (extracted from patent WO2019089626A1, compound 295).