diphenolase

Hexylresorcinol (4-Hexylresorcinol) is a substituted dihydroxybenzene utilized topically as an antiseptic for minor skin infection treatment.

Sulfuretin is a potent anti-oxidant, has protective effect against t-BHP-induced oxidative damage in human liver-derived HepG2 cells is attributable to its ability to scavenge ROS and up-regulate the activity of HO-1 through the Nrf2 ARE and JNK ERK signa

4-Chlorosalicylic acid (4-Chloro-2-hydroxybenzoic acid, 4-chloro salicylic acid) is antimicrobial compositions comprising a metal salt and a benzoic acid analog.

N-Phenylthiourea (Phenylthiocarbamide) is a phenyl ring-containing organothiourea that acts as an EC 1.14.18.1 (tyrosinase) inhibitor, a diphenolase inhibitor, and a non-competitive inhibitor of the PvdP tyrosinase of Pseudomonas, which inhibits melanogenesis, and is able to be used in genetic taste testing.

Benzylacetone (4-Phenyl-2-butanone) is an aromatic compound extracted from incense wood. Benzylacetone has appetite-enhancing and exercise-reducing properties. Benzylacetone has a strong and reversible anti-mushroom tyrosinase effect, with IC50 values of 2.8 mM and 0.6 mM for monophenolase and biphenolase effects, respectively.

Tyrosinase-IN-33 (compound 5), a pyridine-based compound, acts as an effective inhibitor of diphenolase activity in mushroom tyrosinase. It significantly reduces enzyme activity with an IC50 of 9.0 μM.

Tyrosinase-IN-31 (compound 2-06) is a central-targeting tyrosinase inhibitor with IC50 values of 70.44 μM for monophenolase and 1.89 μM for diphenolase. This compound not only inhibits tyrosinase and melanogenesis but also can penetrate the blood-brain barrier to access the central nervous system, where it exhibits neuroprotective effects and improvement in Parkinsonian symptoms.

Isosilybin A is a partial PPARγ agonist, it significantly induced ABCA1 protein expression, it inhibited both monophenolase (IC50=1.7-7.6μM) and diphenolase (IC50=12.1-44.9μM) of tyrosinase. Isosilybin A shows anti-angiogenic efficacy, it has anti-prostate cancer (PCA) activity that is mediated via cell cycle arrest and apoptosis induction.

Broussonin C and broussin are antifungal compounds. Broussonin C exerts simple reversible slow-binding inhibition against diphenolase.