Un-Answered Questions { Chemistry }

How we can identify process related and degradation impurity in single method with short period?

340


inhouse product is in capsule form in combination and RLD is in tablet form then can we proceed for multimedia CDP? in inhouse capsule product disso is paddle with sinker in release media is there then RLD product in tablet form then with same as paddle with sinker we can proceed n.a.?

297


Ph meter can show more than 14 ph reading? Why ph range in between 1 to 14 only?

311


How to set specification of assay, fisdolution and related substances?

372


how to qualify the impurity?

328


what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?

351


What is the formula for relative diffrence for standard solution in solution stability in validation?

314


How require to perform linearity as per ANVISA? What are the acceptance criteria?

729


[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?

318


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?

217


in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?

350


we can use expired sample for validation and analyst qualification?

308


If vendor having more imp than monograph then how to proceed? and how to set spec?

346


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

363


how require to set assay concentration for standard and sample?

377