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

Tyrosinase

Tyrosinase

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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.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-182989
    Tyrosinase-IN-50
    		Inhibitor
    Tyrosinase-IN-50 (Compound 14) is a Tyrosinase inhibitor (IC50 is 0.06 μM or 0.16 μM). Tyrosinase-IN-50 inhibits melanogenesis in multiple cell types. Tyrosinase-IN-50 can be used for the research of hyperpigmentation-related diseases and inflammatory diseases.
    Tyrosinase-IN-50
  • HY-113068S
    β-Tocopherol-d3
    		Inhibitor
    β-Tocopherol-d3 is the deuterium labeled β-Tocopherol. β-Tocopherol is an analogue of vitamin E, exhibits antioxidant properties. β-Tocopherol can inhibit tyrosinase activity and melanin synthesis. β-Tocopherol can also prevent the inhibition of cell growth and of PKC activity caused by d-alpha-tocopherol.
    β-Tocopherol-d<sub>3</sub>
  • HY-N0619R
    Mulberroside A (Standard)
    		Inhibitor
    Mulberroside A (Standard) is the analytical standard of Mulberroside A. This product is intended for research and analytical applications. 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.
    Mulberroside A (Standard)
  • HY-101445AR
    (R)-Trolox (Standard)
    		Inhibitor
    L-Aspartic acid (potassium) (Standard) is the analytical standard of L-Aspartic acid (potassium). This product is intended for research and analytical applications. Aspartic acid potassium is an amino acid, can be used as a suitable proagent for colon-specific agent deliverly.
    (R)-Trolox (Standard)
  • HY-P990149
    Anti-Mouse/Human TYRP1 Antibody (TA99)
    		Inhibitor
    Anti-Mouse/Human TYRP1 Antibody (TA99) is a mouse-derived IgG2a κ type antibody inhibitor, targeting to mouse/human TYRP1. Anti-Mouse/Human TYRP1 Antibody (TA99) binds to Tyrp1 (tyrosinase related protein-1) on tumor. Anti-Mouse/Human TYRP1 Antibody (TA99) enhances infiltration of the tumor by CD8+ T cells. Anti-Mouse/Human TYRP1 Antibody (TA99) can be used for the research of melanoma.
    Anti-Mouse/Human TYRP1 Antibody (TA99)
  • HY-133680R
    β-Tocopherol (Standard)
    		Inhibitor
    β-Tocopherol (Standard) is the analytical standard of β-Tocopherol. This product is intended for research and analytical applications. 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.
    β-Tocopherol (Standard)
  • HY-B1428R
    2-Ethoxybenzamide (Standard)
    		Activator
    2-Ethoxybenzamide (Standard) is the analytical standard of 2-Ethoxybenzamide (HY-B1428). 2-Ethoxybenzamide (Ethenzamide) is a nonsteroidal anti-inflammatory agent that shows analgesic and antipyretic effects. 2-Ethoxybenzamide induces melanin synthesis via cAMP response element-binding protein (CREB) phosphorylation. 2-Ethoxybenzamide can be used in the research of hypopigmentation and inflammation-related diseases.
    2-Ethoxybenzamide (Standard)
  • HY-176437
    Tyrosinase-IN-42
    		Inhibitor
    Tyrosinase-IN-42 (Compound 13t) is a tyrosinase inhibitor (IC50: 1.363 µM). Tyrosinase-IN-42 exhibits anti-browning effects on fresh-cut apples. Tyrosinase-IN-42 has antioxidant activity by scavenging DPPH and ABTS free radicals (IC50: 57.90 and 45.64 µM, respectively).
    Tyrosinase-IN-42
  • HY-N1775R
    3',4'-Dihydroxyacetophenone (Standard)
    		Inhibitor
    3',4'-Dihydroxyacetophenone (3,4-DHAP), isolated from Picea Schrenkiana Needles exhibits a strong suppressive action against tyrosinase activity, with an IC50 of 10 μM. 3',4'-Dihydroxyacetophenone (3,4-DHAP) is a vasoactive agent and antioxidant.
    3',4'-Dihydroxyacetophenone (Standard)
  • HY-175795
    Tyrosinase activator-1
    		Activator
    Tyrosinase activator-1 (Compound 7A) is a Tyrosinase activator. Tyrosinase activator-1 significant antibacterial activity against gram-positive bacteria, such as MRSA, Staphylococcus aureus ATCC653 and Enterococcus faecium with MICs of 12.5-20  μM. Tyrosinase activator-1 activates tyrosinase by competitively occupying the binding site of L-DOPA on the surface of tyrosinase without interfering with the substrate binding at the active center. Tyrosinase activator-1 can be used for bacterial infections and antibiotics development research.
    Tyrosinase activator-1
  • HY-N13739
    Taraxinic acid
    		Inhibitor
    Taraxinic acid can be found in the roots of Taraxacum flavostylum and Taraxacum lucidum. It is a Tyrosinase inhibitor that dose-dependently inhibits Tyrosinase activity, showing approximately 54.5% inhibition at a concentration of 50 μg/mL. Taraxinic acid has an IC50 of 83.2 μM against melanoma cells A375 and HTB140, and an IC50 of 60.4 μM against melanoma cells WM793, with activity being both dose- and time-dependent. Taraxinic acid holds promise for research in the field of anticancer therapy.
    Taraxinic acid
  • HY-183924
    SYK-IN-14
    		Inhibitor
    SYK-IN-14 is an orally active Syk and ZAP-70 inhibitor with human Syk IC50 of 0.006 μM, human ZAP-70 IC50 of 0.23 μM. SYK-IN-14 functionally inhibits Syk kinase activity in vitro. SYK-IN-14 functionally inhibits ZAP-70 kinase activity in vitro. SYK-IN-14 suppresses passive cutaneous anaphylaxis reaction in Mus musculus mice. SYK-IN-14 suppresses Concanavalin A (HY-P2149)-induced IL-2 production in Mus musculus mice. SYK-IN-14 can be used for the research of allergic disorders and autoimmune diseases.
    SYK-IN-14
  • HY-W015616R
    Benzylacetone (Standard)
    		Inhibitor
    Benzylacetone (4-Penylbutan-2-one) (Standard) is the analytical standard of Benzylacetone (HY-W015616). This product is intended for research and analytical applications. Benzylacetone is an aromatic compound. Benzylacetone is a mushroom tyrosinase inhibitor with an IC50 of 2.8 mM, a Ki of 1.25 mM for monophenolase and an IC50 of 0.6 mM, a Ki of 0.39 mM for diphenolase. Benzylacetone inhibits free mushroom tyrosinase and enzyme-substrate complex. Benzylacetone acts as an appetite enhancer via olfactory stimulation, reduces spontaneous locomotor activity, induces weight gain. Benzylacetone exhibits repellent, fumigant, and contact toxicity against Tribolium castaneum adults.
    Benzylacetone (Standard)
  • HY-W129441
    N-Acetyl-4-S-cysteaminylphenol
    		Substrate
    N-Acetyl-4-S-mercaptoaminophenol (N-Ac-4-S-CAP) is a compound that is selectively cytotoxic to melanocytes of black mouse hair follicles. It can cause 98% depigmentation of black mouse hair follicles. N-Ac-4-S-CAP can produce visible changes in hair follicle melanocytes 4 hours after intraperitoneal injection, including aggregation of melanin granules and nuclear condensation. Electron microscopy observations showed that it caused progressive destruction of melanocytes, including swelling of membranous organelles, nuclear condensation, and cytoplasmic vacuolation, ultimately leading to complete cell necrosis. N-Ac-4-S-CAP has a specific cytotoxic effect on melanocytes that actively produce eumelanin, but may not affect precursor or dormant melanocytes. These properties suggest that N-Ac-4-S-CAP may have potential application value in the treatment of melanoma or skin whitening.
    N-Acetyl-4-S-cysteaminylphenol
  • HY-N12427
    Litchinol B
    		Inhibitor
    Litchinol B (compound 2) is a non-competitive tyrosinase inhibitor with an inhibition constant of 5.70 μM.
    Litchinol B
  • HY-N10623
    5-epi-Arvestonate A
    		Activator
    5-epi-Arvestonate A is a sesquiterpenoid isolated from the whole plants of Seriphidium transiliense. 5-epi-Arvestonate A promotes melanogenic production by activating the transcription of microphthalmia-associated transcription factor (MITF) and tyrosinase family genes. 5-epi-Arvestonate A inhibits the expression of IFN-γ-chemokine through the JAK/STAT signaling pathway in immortalized human keratinocyte (HaCaT) cells.
    5-epi-Arvestonate A
  • HY-N0192S
    Arbutin-d4
    		Inhibitor
    Arbutin-d4 is deuterium labeled Arbutin. 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.
    Arbutin-d<sub>4</sub>
  • HY-N6829R
    Retusin (Standard)
    		Inhibitor
    Retusin (Quercetin-3,3',4',7-tetramethylether) (Standard) is the analytical standard of Retusin. This product is intended for research and analytical applications. Retusin is a tyrosinase inhibitor, with IC50 values of 50.9 μM and 51.8 μM against mushroom and intracellular tyrosinase, respectively. Retusin also acts as a free radical scavenger, melanogenesis inhibitor, anti-apoptosis agent, neuroprotective agent, antiemetic, antifungal agent, and antiviral agent. Retusin scavenges ABTS•+ and DPPH• free radicals. Retusin can be used in studies related to hyperpigmentation, vomiting, Aspergillus niger infection, and COVID-19 infection.
    Retusin (Standard)
  • HY-180506
    Tyrosinase-IN-47
    		Inhibitor
    Tyrosinase-IN-47 (compound 6a) is a potent competitive tyrosinase inhibitor with an IC50 of 1.43 µM and a Ki of 0.1142 μM. Tyrosinase-IN-47 also shows inhibition activity in α-Glucosidase (IC50 = 36.26 μM) and acetylcholinesterase (IC50 = 8.26 μM). Tyrosinase-IN-47 exhibits in vitro antioxidant activity, with good scavenging ability for DPPH (IC50 = 4.75 μM) and ABTS (IC50 = 0.04 μM). Tyrosinase-IN-47 displays anti-browning effect on freshly cut potatoes. Tyrosinase-IN-47 can be used for pharmaceutical research.
    Tyrosinase-IN-47
  • HY-W007671R
    H-Tyr-OMe (Standard)
    		Substrate
    H-Tyr-OMe is an endogenous metabolite. H-Tyr-OMe quenches the fluorescence of carbon dots by oxidizing the phenolic hydroxyl group to quinone under the catalysis of Tyrosinase, and its amino and thiol binding ability can respond to changes in the concentration of biothiols.
    H-Tyr-OMe (Standard)
Cat. No. Product Name / Synonyms Application Reactivity