What is related substance by HPLC impurity limits as per USP?

544

If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately

348

what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?

3098

there is something which we call as the basicity of an acid i wanted to ask is that is there something like the basicity of an alkali if yes than how can we define it?

1587

WHAT TYPE OF QUESTION ASK FOR POST SENIOR TECHNICAL ASSISTANT IN DRDO

7650

What does it mean for a molecule or a ligand to be "chiral"? What properties does chirality impart to a molecule? : Polymer Chemistry

533

Sr-90, a radioactive isotope, is a major product of an atomic bomb explosion. It has a half life of 28.1 year. Calculate the first order rate constant for this nuclear decay and the fraction of 90Sr that remains after 10 half lives?

5712

what is meaning of wet analysis.

5213

can i use hplc detector to uplc and why?

1800

hi, i want last 10 years ongc exam recruitment papers for subject in chemistry ,genaralknowladge.

2354

However ozone is heavier than oxygen still ozone is up there in sky why?

536

What is a tripod?

639

naphtha and hexane mixture can be used a fuel or not

1953

What is the nature of the bonding interaction between a metal and an olefin? : Polymer Chemistry

550

A ha tc is actual defination of retention time?

1053