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Dear sir, This is R.Kadambavadani working in a pharma industry. while doing RS analysis of ibuprofen API, unknown peak eluting some times in the 0.6 Min RT. Kindly send me what is the exact reason behind that. also am using ACN the mobile phase.
1 2582please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development
1628How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?
1778Find out how to make artifacts the maxwell boltzmann theory of gases . ps. I don't speak English that well
1578
How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?
Explain what is the dipole moment of chlorooctane?
WHY pKa value is more important than pH value of the mobile phase in HPLC?
In order to avoid the pyridine catalyst use in many synthesis which is harmfull to environment, which catalyst can be used....?
In Dissolution Test why limit is define Q+5% what is the role of +5%.
How are ph and pka related?
what is procedure of actual procedure for registration of drug?
Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?
Define what is avogadro’s law?
in api coa analytical method given as Ph Europe which api used in formulation in this api coa method given Ph Europe so for Analytical methic for finished product we require to refer Ph Europe monograph ok n.a.? So any extra impurities which is given in USP monograph of api or finished product need not require to monitor on above case n.a.? but how require to do specificity?
why require to do water content for drug product?
In the HPLC Calibration done wavelength accuracy done between 200nm-280nm .but not done remaining 300-400nm not done ?
What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.
How BIS Decedied the LSF value 0.66-1.02 with calculation.
How does Protactinium contribute to our understanding of Earth's history and the behavior of elements in natural systems?
