two sensitive spectrophotometric methods are presented for the assay of pantoprazole sodium sesqui hydrate (pnt) in bulk drug and in formulations using n-bromosuccinimide (nbs) and two dyes, methyl orange and indigo carmine, as reagents. the methods involve the addition of a known excess of nbs to pnt  in acid medium, followed by determination of unreacted oxidant by reacting with a fixed amoun...

a study was made on the interaction between histon h1 and sodium n-dodecyl sulphate (sds) in the presence of sodium arsenate inside a phosphate buffer of ph 6.4, using spectroscopy and equilibrium dialysis at 27 °c. the binding data has been used to obtain the gibbs free energy in terms of a theoretical model based on the wyman binding potential. the binding data hs been analysed in terms of hi...

the thermal denaturation of adenosine deaminase (ada) has been investigated in the presence of sodium n-dodecyl sulphate (sds) over the temperature range of (293-363k) in 2.5 mm phosphate buffer, ph 6.4 by temperature scanning spectroscopy. the interaction of sds caused the folding of adenosine deaminanse resulting in a decrease of th (temperature of minimum solubility), ts (temperature of maxi...