4371-31-7Relevant articles and documents
SERIES OF SKIN WHITENING (LIGHTENING) COMPOUNDS
-
Page/Page column 9, (2010/02/17)
The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
Novel features in the oxidation of dihydroxy benzenes by 2,6-dichloroquinone-4-chloro-imide in acetic acid and sodium acetate buffer medium
Madhavi,Syama Sundar,Radhakrishna Murti
, p. 242 - 245 (2007/10/03)
Kinetics of oxidation of quinol, catechol and resorcinol by 2,6-dichloroquinone-4-chloro-imide (DCQCI) in CH3COOH-NaOAc system is reported. The kinetic features of ortho dihydroxy and para dihydroxy benzenes are similar. The reactions are zero order in oxidant at lower concentrations of oxidant (below 0.0005 M) and fractional order in substrate. At higher concentrations of oxidant, these two compounds exhibit first order in oxidant and fractional order in substrate leading to independence. Resorcinol exhibits different kinetic features: first order in oxidant at all concentrations and fractional order in substrate. The major products are coupling products under these conditions. Reactivity order is resorcinol 〉 catechol 〉 quinol. This result is novel. A mechanism is postulated to explain the observed order and a suitable rate law has been derived.
Selective Synthesis of Unsymmetrical Hydroxylated and Methoxylated Biaryls
Sartori, Giovanni,Maggi, Raimondo,Bigi, Franca,Grandi, Michele
, p. 7271 - 7273 (2007/10/02)
-