Autocatalytic Oxidation of Thiamine Hydrochloride (Vitamin B<sub>1</sub>
) by Permanganate in Aqueous Sulfuric Acid Medium: A Kinetic and Mechanistic Study
autocatalytic effect is due to the (4‐methyl–thiazol‐5‐yl) aceticacid, a product formed from the oxidation of vitamin B1, which is a rare case. The added Mn2+ does not have any significant effect on the rate of reaction. The reaction is first order with respect to both permanganate and thiamine hydrochloride concentrations. An increase in the sulfuric acid concentration decreases the rate of reaction. A composite
Naphathalene derivatives which bind to the ep4 receptor
申请人:——
公开号:US20040102508A1
公开(公告)日:2004-05-27
Compounds of formula (I) and pharmaceutically acceptable derivatives thereof bind with high affinity to the EP4 receptor and are of use in the treatment of prevention of conditions such as a pain, inflammatory, immunological, bone, neurodegenerative or renal disorder.
1