During these complex formation, it seems that the ligands react through their enolic
form because a strong peak appeared in all ligands, at ~1498 cm-1, due to -NCO-shifted towards lower frequency 1452 cm-1 after complex formation, this C=O was not involved in metal complexation.
Sex Male Male Female Male Age 46 60 36 52 (years) Etiology HCV + HCV + Non-cirrhotic Enolic
of liver Enolic Enolic
portal HP cirrhosis disease Pre LT pH 7.
Meloxicam is a nonsteroidal anti-inflammatory drug of the enolic
acid class of compounds used in the treatment of rheumatoid arthritis and osteoarthritis.
On TLC the compound gave a violet spot with p-nitroaniline spray reagent indicating that it is either phenolic or enolic
, a dark brown colour with anisaldehyde spray reagent and a bright yellow colour with, 2,4 DNP spray reagent, suggesting that a carbonyl group might be present.
From the literature and the types of vibration found in Table 2, it can be concluded that the extracted humic acid contains a variety of functional groups, including carboxylic acid (COOH), phenolic hydroxy (OH), enolic
(OH), alcoholic (OH), quinone, hydroxyl quinone, lactone, and ether .
Humified material is often a stronger sorbent due to the presence of oxygen-containing functional groups such as -COOH, phenolic, aliphatic, enolic
, -OH, and C=O.
Meloxicam, a preferential COX-2 NSAID of the enolic
acid class, is believed to cause less gastrotoxicity and has no effect on platelet aggregation compared with nonselective COX inhibitors.
phenylpyruvic acid-2-0-(3-D-glucoside (PPAG) was isolated from rooibos (purity Greater than 95% by HPLCand LC-MS)and supplied by the Post-Harvest & Wine Technology Division of the Agricultural Research Council of South Africa (ARC Infruitec-Nietvoorbij, Stellenbosch, South Africa).