The mol-ecular structure of the title compound, C(13)H(15)NO(3), is stabilized by a short intra-molecular O-H⋯O hydrogen bond within the maleamic unit. In the crystal, inter-molecular N-H⋯O hydrogen bonds link mol-ecules into zigzag chains propagating in [010].

The asymmetric unit of the title compound, C(10)H(7)Cl(2)NO(3), contains two unique mol-ecules, both being stabilized by an intra-molecular O-H⋯O hydrogen bond within their maleamic units. In the crystal structure, inter-molecular N-H⋯O hydrogen bonds link the mol-ecules into chains extending along [1] which are further assembled into sheets via short inter-molecular C-Cl⋯O=C contacts [3.102 (2...

Maternal, fetal and neonatal complications are correlated with hypertensive disorders during pregnancy.  In this context, the maternal blood uric acid level is reported to be one of the prognostic factors in determining the prenatal outcome.  Based on the existing data, the present descriptive study was performed on two groups of women with severe preeclampsia; the first group (n=53) with a uri...

objective: the effects of dietary fish oil on semen quality and sperm fatty acid profiles during consumption of n-3 fatty acids as well as the persistency of fatty acids in ram’s sperm after removing dietary oil from the diet were investigated. materials and methods: in this experimental study, we randomly assigned 9 zandi rams to two groups (isoenergetic and isonitrogenous diets): control (ctr...

N-sulfonic acid pyridinium -4-carboxylic acid chloride {[Pyridine-N-SO3H-4-COOH]Cl} was synthesized, identified and applied as an effective catalyst for the preparation of pyrido[2,3-d:6,5-d]dipyrimidines by the condensation reaction of various aldehyde with 2-thiobarbituric acid and ammonium acetate under solvent-free conditions.The structure ofcatalyst was studied...

abstract mefenamic acid is a nonsteroidal anti-inflammatory drug (nsaid) that has analgesic,anti-infammatory and antipyretic actions. it is used to relieve mild to moderate pains. solid-phase extraction of mefenamic acid by a polymer grafted to silica gel is reported . poly allyl glycidyl ether/iminodiacetic acid-co-n, n-dimethylacrylamide was synthesized and grafted to silica gel and was used ...