Synthesis of 1,3-substituted pyrazole (i.e. 1,3-diphenyl pyrazole) from diarylhydrazone (i.e. diphenyl hydrazone) and vicinal diol
1,3-substituted pyrazole is prepared by cyclization of diarylhydrazone and vicinal diol in presence of ferric chloride and tert-butylhydroperoxide(TBHP) which is also called regioselective synthesis of substituted pyrazole
Metacentric height is a parameter to measure the static stability of a floating body, as it is defined as a distance between the center of gravity of a body and its metacenter.
BACKGROUND Principle: Methyl salicylate (oil of wintergreen) is an organic ester. When an acid (containing the –COOH group) reacts with an alcohol (a compound containing an –OH group) formed an ester. The type of reaction may be known as condensation reaction because the small molecule of H2O is eliminated...
Ash values are helpful to determine the quality as well as purity of a crude drug, especially when the drug is present in powdered form. The object of ashing crude drugs is to remove the traces of organic matter which may be interferes in an analytical determination.
The reticulocytes are immature red blood cells. These are produced during erythropoiesis and maturation happens in bone marrow. They do not have cell nucleus and possess a reticular network of ribosomal RNA
Estimation of DNA can be done by using various method like absorbance, agarose gel electrophoresis etc. Among all estimation using spectrophotometer is convenient
Carbohydrates are the chief biological fuel in a biological system. In plants, bacteria and fungi carbohydrate molecules and their derivatives can be observed as structural elements.
The stalagmometer is consist of a capillary bore with a bulb at the middle. The surface tension of the given liquid can be determined by using the following formula.
The mixture acts as a buffer solution. During the course of titration acid concentration decreases and salt concentration goes on increasing. During any stage of titration the pH of buffer solution is explained by the Henderson –Hasselbalch equation.
Milk and all dairy product are vital human food staple and is very much required for maintaining a balance in everyday diet. There are a number of dairy products available that are sourced from various animals like whole milk of sheep, goat milk, cheese and also for baby's milk...