how can delete the impurity in 1-(2:6 dichloro phenyl)-2-indolenone.and desolving the impurity in which solvent but does not desolve product in solvent.
1 1753in determination of(acetone) moister content we are using methanol replaced by pyredine.what hapend in that reaction.
2 7084what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.
1625WHEN AN UN KNOWN SAMPLE IS GIVEN TO U,HOW WILL U START THE ANALYSIS(ie FIRST WHICH TEST TO BE DONE,NEXT,THEN NEXT),HOW WILL U DECIDE WHICH TYPE OF ANALYSIS TO BE DONE FOR IT?
2 8722Post New Analytical Chemistry Questions
what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?
Basic principle of ESI?
what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me
cefoperozone and sulbactam inj. hplc test method
How would you decide dissolution medium for NCE compound of class I drug
Why sodium hydroxide used for maintain pH of phosphate buffer
2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.
how to calibrate hplc & gc
what is definition of validation? which components are followed give detail?
what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means
WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY
Principle of single pan analytical balance
What are the primary considerations in extractables and Leachables ?
How to check hplc detecter sensitivity?
Many times I don't got a caffeine peak in calibration of hplc using guard column ❓
