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-N0136R
    Taxifolin (Standard)
    		Inhibitor
    Taxifolin (Standard) is the analytical standard of Taxifolin. This product is intended for research and analytical applications. 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.
    Taxifolin (Standard)
  • HY-173223
    Tyrosinase-IN-41
    		Inhibitor
    Tyrosinase-IN-41 (compound 7) is a Tyrosinase inhibitor, with an IC50 of 9.45 μM.
    Tyrosinase-IN-41
  • HY-W017212S
    Methyl cinnamate-d7
    		Inhibitor
    Methyl cinnamate-d7 is deuterated labeled Cinnamyl Alcohol (HY-Y0078). Cinnamyl Alcohol is an active component from chestnut flower, inhibits increased PPARγ expression, with anti-obesity activity.
    Methyl cinnamate-d<sub>7</sub>
  • HY-W015309R
    Decanoic acid (Standard)
    		Inhibitor
    Decanoic acid (Standard) is the analytical standard of Decanoic acid. This product is intended for research and analytical applications. Decanoic acid is a key component of the medium-chain triglyceride (MCT) found in coconut oil. Decanoic acid is a brain-penetrant and non-competitive inhibitor of AMPA receptor showing antiseizure activity in rats. Decanoic acid reduces tyrosinase activity and inhibits melanosome maturation. Decanoic acid suppresses the phosphorylation of c-Met and induced apoptosis in hepatocellular carcinoma (HCC) cells by inhibiting the expression of various oncogenic proteins, which is promising for research in the field of mTORC1 signaling, HCC and epilepsy.
    Decanoic acid (Standard)
  • HY-141555
    5,5′-(1,3-Propanediyl)bis-1,3,4-oxadiazole-2(3H)-thione
    		Inhibitor
    5,5′-(1,3-Propanediyl)bis-1,3,4-oxadiazole-2(3H)-thione is a weak inhibitor for snake venom and human recombinant phosphodiesterase 1 with IC50 of 429 and 467 μM. 5,5′-(1,3-Propanediyl)bis-1,3,4-oxadiazole-2(3H)-thione inhibits mushroom tyrosinase weakly, with Ki of 1.9 μM.
    5,5′-(1,3-Propanediyl)bis-1,3,4-oxadiazole-2(3H)-thione
  • HY-W013636C
    2-Ketoglutaric acid potassium
    		Inhibitor ≥98.0%
    2-Ketoglutaric acid potassium (Alpha-Ketoglutaric acid potassium) is an intermediate in the production of ATP or GTP in the Krebs cycle. 2-Ketoglutaric acid potassium also acts as the major carbon skeleton for nitrogen-assimilatory reactions. 2-Ketoglutaric acid potassium is a reversible inhibitor of tyrosinase with an IC50 value of 15 mM.
    2-Ketoglutaric acid potassium
  • HY-125762
    Tyrosinase-IN-16
    		Inhibitor ≥98.0%
    Tyrosinase-IN-16 (compound 19a) is a tyrosine kinase (Tyrosinase) inhibitor with Ki=470 nM. Tyrosinase-IN-16 is cytotoxic to B16F10 cells, with >90% inhibition at 20 μM.
    Tyrosinase-IN-16
  • HY-123898
    Cepharadione B
    		Inhibitor
    Cepharadione B (compound 22) is a natural compound isolated from the leaves of Piper sanctum. Cepharadione B is a tyrosinase inhibitor with an IC50 value of 170 μM, and inhibits cell growth in A-549, SK-OV-3, SK-MEL-2, XF-498 and HCT-15 cells.
    Cepharadione B
  • 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[1][2][3].
    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)
  • 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-B0856R
    Validamycin A (Standard)
    		Inhibitor
    Validamycin A (Standard) is the analytical standard of Validamycin A. This product is intended for research and analytical applications. 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.
    Validamycin A (Standard)
  • 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-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-159586
    Tyrosinase-IN-32
    		Inhibitor
    Tyrosinase-IN-32 (compound 11) is a hydroxamate-based alkaloid and a mushroom tyrosinase inhibitor. Tyrosinase-IN-32 has antioxidant activity and can be isolated from black pepper (Piper nigrum L.).
    Tyrosinase-IN-32
Cat. No. Product Name / Synonyms Application Reactivity