1. Signaling Pathways
  2. Metabolic Enzyme/Protease
  3. Tyrosinase


Tyrosinase is a copper-containing metalloprotein belonging to the type-3 copper protein family, together with haemocyanins and catechol oxidases. Tyrosinases are the catalysts in mammals responsible for the formation of melanin in skin and hair color, as well as browning in fruit and vegetables following cell damage.

Tyrosinases are found in various prokaryotes as well as in plants, fungi, arthropods, and mammals and are responsible for pigmentation, wound healing, radiation protection, and primary immune response. Tyrosinases perform two sequential enzymatic reactions: hydroxylation of monophenols and oxidation of diphenols to form quinones which polymerize spontaneously to melanin. In plants, sponges, and many invertebrates, tyrosinases are important for wound healing and primary immune responses; in arthropods, they play a role in sclerotization, and in bacteria, tyrosinases protect DNA from UV damage.

Tyrosinase Related Products (50):

Cat. No. Product Name Effect Purity
  • HY-N0136
    Taxifolin Inhibitor 99.97%
    Taxifolin ((+)-Dihydroquercetin) exhibits important anti-tyrosinase activity. Taxifolin exhibits significant inhibitory activity against collagenase with an IC50 value of 193.3 μM. Taxifolin is an important natural compound with antifibrotic activity. Taxifolin is a free radical scavenger with antioxidant capacity.
  • HY-W013636
    2-Ketoglutaric acid Inhibitor
    2-Ketoglutaric acid (Alpha-Ketoglutaric acid) is an intermediate in the production of ATP or GTP in the Krebs cycle. 2-Ketoglutaric acid also acts as the major carbon skeleton for nitrogen-assimilatory reactions. 2-Ketoglutaric acid is a reversible inhibitor of tyrosinase (IC50=15 mM).
  • HY-N0192
    Arbutin Inhibitor ≥98.0%
    Arbutin (β-Arbutin) is a competitive inhibitor of tyrosinase in melanocytes, with Kiapp values of 1.42 mM for monophenolase; 0.9 mM for diphenolase. Arbutin is also used as depigmenting agents. Arbutin is a natural polyphenol isolated from the bearberry plant Arctostaphylos uvaursi, possesses with anti-oxidant, anti-inflammatory and anti-tumor properties.
  • HY-N0619
    Mulberroside A Inhibitor 99.75%
    Mulberroside A is one of the main bioactive constituent in mulberry (Morus alba L.). Mulberroside A decreases the expressions of TNF-α, IL-1β, and IL-6 and inhibits the activation of NALP3, caspase-1, and NF-κB and the phosphorylation of ERK, JNK, and p38, exhibiting anti-inflammatory antiapoptotic effects. Mulberroside A shows inhibitory activity against mushroom tyrosinase with an IC50 of 53.6 μM.
  • HY-136179
    ZAP-180013 Inhibitor ≥98.0%
    ZAP-180013 is a zeta-chain-associated protein kinase 70 (ZAP-70) inhibitor with an IC50 of 1.8 μM. ZAP-180013 inhibits the interaction of ZAP-70 SH2 domain with immunoreceptor tyrosine-based activation motif (ITAMs).
  • HY-108935
    Lavendustin B Inhibitor 98.04%
    Lavendustin B is an inhibitor of HIV-1 integrase interaction with LEDGF/p75 with an IC50 of 94.07 μM. Lavendustin B is an ATP-competitive GLUT1 inhibitor with a Ki of 15 µM. Lavendustin B is also a weak inhibitor of tyrosine kinases.
  • HY-N6244
    Isolindleyin Inhibitor
    Isolindleyin, a butyrophenone, is a tyrosinase inhibitor, with a Kd of 54.8 μM for human tyrosinase. Isolindleyin exhibits anti-inflammatory, analgesic and anti-melanogenic activities.
  • HY-W019829
    Polyphyllin C Inhibitor
    Polyphyllin C (compound 2) is a spirostanol saponin. Polyphyllin C exhibits mild (IC50=36.87 µM) activities against the tyrosinase and moderate (IC50=1.59 µg/mL) antileishmanial activities.
  • HY-N1430
    Oxyresveratrol Inhibitor 99.91%
    Oxyresveratrol (trans-Oxyresveratrol) is a potent naturally occurring antioxidant and free radical scavenger (IC50 of 28.9 µM against DPPH free radicals). Oxyresveratrol is potent and noncompetitive tyrosinase inhibitor with an IC50 value of 1.2 µM for mushroom tyrosinase. Oxyresveratrol is effective against HSV-1, HSV-2 and varicella-zoster virus, and has neuroprotective effects.
  • HY-15811
    XMD8-87 Inhibitor ≥98.0%
    XMD8-87 is a potent TNK2 inhibitor with IC50 values of 38 and 113 nM for the D163E and R806Q mutations, respectively.
  • HY-N0616
    Trifolirhizin Inhibitor ≥99.0%
    Trifolirhizin is a pterocarpan flavonoid isolated from the roots of Sophora flavescens. Trifolirhizin possesses potent tyrosinase inhibitory activity with an IC50 of 506 μM. Trifolirhizin exhibits potential anti-inflammatory and anticancer activities.
  • HY-W017212
    Methyl cinnamate Inhibitor 99.39%
    Methyl cinnamate (Methyl 3-phenylpropenoate), an active component of Zanthoxylum armatum, is a widely used natural flavor compound. Methyl cinnamate (Methyl 3-phenylpropenoate) possesses antimicrobial activity and is a tyrosinase inhibitor that can prevent food browning. Methyl cinnamate (Methyl 3-phenylpropenoate) has antiadipogenic activity through mechanisms mediated, in part, by the CaMKK2-AMPK signaling pathway.
  • HY-B1461
    Deoxyarbutin Inhibitor ≥98.0%
    Deoxyarbutin is a new effective lighten ingredient, can effectively inhibit tyrosinase activity and melanin synthesis to get significant and lasting lightening effect.
  • HY-W015967
    Glycolic acid Inhibitor
    Glycolic acid is an inhibitor of tyrosinase, suppressing melanin formation and lead to a lightening of skin colour.
  • HY-B0856
    Validamycin A Inhibitor
    Validamycin A, a fungicidal, is an agricultural antibiotic. Validamycin A is originally isolated from Streptomyces hygroscopicus var. limoneus. Validamycin A inhibits the growth of A. flavus, with a MIC of 1 μg/mL. Validamycin A shows potent inhibitory activity against trehalase of Rhizoctonia solani, with an IC50 of 72 μM. Validamycin A is a reversible tyrosinase inhibitor, with a Ki of 5.893 mM.
  • HY-133680
    β-Tocopherol Inhibitor 99.64%
    β-Tocopherol is an analogue of vitamin E, exhibits antioxidant properties. β-Tocopherol can inhibit tyrosinase activity and melanin synthesis. β-Tocopherol also can prevent the inhibition of cell growth and of PKC activity caused by d-alpha-tocopherol.
  • HY-Y0444
    D-Tyrosine Inhibitor ≥98.0%
    D-Tyrosine is the D-isomer of tyrosine. D-Tyrosine negatively regulates melanin synthesis by inhibiting tyrosinase activity. D-Tyrosine inhibits biofilm formation and trigger the self-dispersal of biofilms without suppressing bacterial growth.
  • HY-N3266
    Methyl rosmarinate Inhibitor 99.89%
    Methyl rosmarinate is a noncompetitive tyrosinase inhibitor which is isolated from Rabdosia serra, with an IC50 of 0.28 mM for mushroom tyrosinase, and also inhibits a-glucosidase.
  • HY-101445A
    (R)-Trolox Inhibitor 99.94%
    (R)-Trolox is a vitamin E analogue and a competitive tyrosinase inhibitor with a Ki value of 0.83 mM and a ID50 value of 1.88 mM. The (R)-Trolox has stronger tyrosinase affinity than the (S) enantiomer (Ki value of 0.61 mM).
  • HY-N2278
    Kushenol A Inhibitor 99.84%
    Kushenol A (Leachianone E) is isolated from the root of Sophora flavescent. Kushenol A is a non-competitive tyrosinase inhibitor to block the conversion of L-tyrosine to L-DOPA, shows IC50 and Kivalues of 1.1 μM and 0.4 μM, respectively. Kushenol A is a flavonoid antioxidant, has inhibitory effects on alpha-glucosidase (IC50: 45 μM; Ki: 6.8 μM) and β-amylase. Kushenol A is confirmed as potential inhibitors of enzymes targeted by cosmetics for skin whitening and aging.
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