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[1].
D-Tyrosine-d2 is the deuterium labeled D-Tyrosine. 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[1][2].
Tyrosinase (206-214), human (AFLPWHRLF), a 9-amino acid peptide, is a tyrosinase epitope. Tyrosinase (206-214), human can be recognized by HLA-A24 restricted, tumor-infiltrating lymphocytes (TIL)[1].
Neorauflavane is a potent tyrosinase inhibitor derived from Campylotropis hirtella, with an IC50 value of 30 nM for tyrosinase monophenolase activity and an IC50 value of 500 nM for diphenolase activity. Neorauflavane can effectively reduce the melanin content of B16 melanoma cells[1].
XMD8-87 is a potent TNK2 inhibitor with IC50 values of 38 and 113 nM for the D163E and R806Q mutations, respectively.
Dihydromorin, a natural flavanonol compound, is a tyrosinase inhibitor[1].
Diaminopropionoyl tripeptide-33isa bioactive peptide with protects skin cells from UVA-induced DNA damages and has been reported used as a cosmetic ingredient[1].
hTYR/AbTYR-IN-1 (Compound 7) is a hTYR/AbTYR dual inhibitor, with IC50s of 5.4 μM and 3.52 μM for hTYR and AbTYR respectively[1].
Kushenol A is isolated from the root of Sophora flavescent, a non-competitive tyrosinase inhibitor with IC50 and Ki values of 1.1 μM and 0.4 μM, respectively[1].Kushenol A is a flavonoid antioxidant, has inhibitory effects on alpha-glucosidase and beta-amylase[2].Kushenol A is confirmed as potential inhibitors of enzymes targeted by cosmetics for skin whitening and aging[1].
CMX-2043 is a novel analogue of α-Lipoic Acid (HY-N0492). CMX-2043 is effective in antioxidant effect, activation of insulin receptor kinase, soluble tyrosine kinase, and Akt phosphorylation. CMX-2043 shows protection against ischemia-reperfusion injury (IRI) in rat model[1][2].
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)[1].
Validamycin A is an aminoglycoside agricultural antibiotic. Validamycin A inhibits the growth of A. flavus, with a MIC of 1 μg/mL[1]. Validamycin A is a reversible tyrosinase inhibitor, with a Ki of 5.893 mM[2].
Mulberroside A, the major active anti-tyrosinase compound in the root bark extract of Morus alba L. (Moraceae), is widely employed as an active ingredient in whitening cosmetics. IC50 value: 1.29 μmol/L (inhibition of the monophenolase activity); KI value: 0.385 μmol/L (the inhibition constant of the effectors on tyrosinase); KIS value: 0.177 μmol/L (the inhibition constant of the enzyme-substrate complex) [3] Target:In vitro: Mulberroside A decreased the expressions of tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, and IL-6 and inhibited the activation of NALP3, caspase-1, and nuclear factor-κB and the phosphorylation of extracellular signal-regulated protein kinases, the c-Jun N-terminal kinase, and p38 exhibiting anti-inflammatory antiapoptotic effects [1]. Mulberroside A treatment significantly decreased the mRNA and protein expression of P-gp in Caco-2 cells after treatment with Mulberroside A (5–20 μM). PKC and NF-κB might play crucial roles in Mulberroside A-induced suppression of P-gp [2]. In vivo:
Mulberroside F is one of the main bioactive constituents in mulberry (Morus alba L.)[1]. Mulberroside F shows inhibitory effects on tyrosinase activity and on the melanin formation. Mulberroside F also exhibits superoxide scavenging activity that is involved in the protection against auto-oxidation[2].
Glycolic Acid is an inhibitor of tyrosinase, suppressing melanin formation and lead to a lightening of skin colour.
2-Ketoglutaric acid-13C5 is the 13C labeled 2-Ketoglutaric acid[1]. 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)[2].
Dihydroaltenuene B is a potent mushroom tyrosinase inhibitor with an IC50 of 38.33 µM. Dihydroaltenuene B shows the hydrogen bonding interactions between the 3-OH and 4’-OH and the His244, Met280 and Gly281 residues of tyrosinase[1].
Broussonin C is a competitive inhibitor of Tyrosinase that can be isolated from Broussonetia kazinoki. Broussonin C inhibits monophenolase and diphenolase with IC50s of 0.43 and 0.57 μM, respectively[1].
Non-competitive tyrosinase inhibitor (Tyrosinase-IN-12) is a potent, non-competitive tyrosinase inhibitor with an IC50 value of 49.33 ± 2.64 µM and Ki value of 31.25 ± 0.25 µM. Non-competitive tyrosinase inhibitor (Tyrosinase-IN-12) have the highest radical scavenging activity to reduce the production of reactive oxygen species (ROS) with an IC50 value of 25.39 ± 0.77 µM. Non-competitive tyrosinase inhibitor (Tyrosinase-IN-12) can be used for anti-browning substances in the food and agricultural sectors[1].
TNK2-IN-1 is a TNK2 inhibitor. TNK2-IN-1 has an IC50 of 224 nM for TNK2. TNK2-IN-1 can be used for the research of cancer[1].
4-Prenyloxyresveratrol, an oxyresveratrol derivative, shows potent tyrosinase inhibitory activity with an IC50 of 0.90 μM[1].
3-O-Ethyl-L-ascorbic acid, a stable vitamin C derivative, is a cosmetic tyrosinase tnhibitor with a whitening capacity. 3-O-Ethyl-L-ascorbic acid also has antioxidant abilities[1][2].
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[1][2].
D-Tyrosine-d7 is the deuterium labeled D-Tyrosine. 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[1][2].
(R)-Trolox is a water soluble vitamin E analogue and a competitive tyrosinase inhibitor with a Ki value of 0.83 mM and a ID50 value of 1.88 mM[1]. The (R)-Trolox has stronger tyrosinase affinity than the (S) enantiomer (Ki value of 0.61 mM)[1].
XMD16-5 is a potent TNK2 inhibitor with IC50 values of 16 and 77 nM for the D163E and R806Q mutations, respectively.
3,4-Dimethoxyphenol is a plant-derived phenylpropanoid compound and can use as a whitening agent in cosmetics. 3,4-Dimethoxyphenol has tyrosinase-inhibiting activity[1]. 3,4-Dimethoxyphenol has potent antioxidant effect isolated from the bacterial fermentation broth[2].
MtTMPK-IN-4 (compound 2), a para-piperidine, is a potent mycobacterium tuberculosis thymidylate kinase (MtTMPK) inhibitor with an IC50 of 6.1 μM. MtTMPK-IN-4 is a potent tyrosinase inhibitor. MtTMPK-IN-4 is a potent antibacterial agent[1][2].
Decapeptide-12, a small oligopeptide, is a tyrosinase inhibitor that interacts with C-terminal residue of tyrosinase (Kd: 61.1 μM). Decapeptide-12 is a competitive inhibitor of mushroom tyrosinase (IC50: 40 µM). Decapeptide-12 also increases transcription of SIRT. Decapeptide-12 reduces melanin content in melanocytes. Decapeptide-12 is used for the research of melanogenesis, senescence, inflammation [1][2][3].
3-(2,4-Dihydroxyphenyl)propanoic acid (DPPacid) is a potent and competitive tyrosinase inhibitor, inhibits L-Tyrosine and DL-DOPA with an IC50 and a Ki of 3.02 μM and 11.5 μM, respectively[1].