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

Aldehyde Dehydrogenase (ALDH)

Aldehyde Dehydrogenase (ALDH)

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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) Isoform Specific Products:

Aldehyde Dehydrogenase (ALDH) Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-B0240
    Disulfiram
    		Inhibitor 99.78%
    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, a copper ion carrier, with Cu2+ increases intracellular ROS levels and induces cuproptosis.
    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-W016645
    4-Diethylaminobenzaldehyde
    		Inhibitor 99.86%
    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-159111
    KS124
    		Inhibitor
    KS124 (compound 3) is a potent ALDH inhibitor. KS124 shows inhibition for ALDH1A1, ALDH1A3, ALDH3A1. KS124 shows antiproliferative activity. KS124 induces apoptosis and ROS production.
    KS124
  • HY-N0018R
    Daidzin (Standard)
    		Inhibitor
    Daidzin (Standard) is the analytical standard of Daidzin. This product is intended for research and analytical applications. 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 (Standard)
  • HY-N7083R
    Citral (Standard)
    		Inhibitor
    Citral (Standard) is the analytical standard of Citral. This product is intended for research and analytical applications. Citral is an orally active monoterpene compound in lemon grass essential oil and a natural ALDH1A inhibitor, which can induce apoptosis and cycle arrest in breast cancer cell lines, and has analgesic, anti-injurious and anti-inflammatory effects.
    Citral (Standard)
  • 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-19801
    CVT-10216
    		Inhibitor 99.87%
    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-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 agent that can suppress or relieve pain. that blocks the transmission of various nerve impulses or stimuli and inhibits the sensation of touch and pain.
    Dyclonine hydrochloride
  • HY-N7083
    Citral
    		Inhibitor
    Citral is an orally active monoterpene compound in lemon grass essential oil and a natural ALDH1A inhibitor, which can induce apoptosis and cycle arrest in breast cancer cell lines, and has analgesic, anti-injurious and anti-inflammatory effects[2][3].
    Citral
  • 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-148466
    IGUANA-1
    		Inhibitor 98.88%
    IGUANA-1 is a potent and selective ALDH1B1 inhibitor. IGUANA-1 shows no significant mitochondrial toxicity. IGUANA-1 has antitumor activity.
    IGUANA-1
  • 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-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
  • HY-112278
    NCT-506
    		Inhibitor 99.95%
    NCT-506 is an orally bioavailable aldehyde dehydrogenase 1A1 (ALDH1A1) inhibitors with an IC50 of 7 nM.
    NCT-506
Cat. No. Product Name / Synonyms Application Reactivity
Aldehyde Dehydrogenase (ALDH) Isoform Comparison

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