Answer Posted / foestar fernandes. lupin lim

1) Its pharmacopia recomended
2)Highly stable in solution form
3)Its wavelengths are known(2 maximas at 205 and 273 also 1 minima at 245)
4)Cheap and readily available

what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

2627

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Basic principle of ESI?

2095

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Why use only methanol,used determinationof moisture content not use other solvents

1360

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what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

2584

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in stress study if your api not soluble in hcl naoh h2o2 then what require to do?

791

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if you have given a blank water how you analyse by general analytical techniques?

1974

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Identify problem faced when mass spectroscopy is used with HPLC system ?

1802

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Explain the relations between number of carbon atoms in alkanes and retention time ?

2072

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As per ICH related substances stability trend limit from initial to shelf life

3185

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function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2609

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What is dose dumping? why require to do?

873

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Why we check moisture,ash & AIA in product

1821

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What is the calibration of uv process and preparation

1937

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How to determine water content of bis tetrazole amine mono ammonium salt

3423

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How do we fix the sample concentaryion in hplc method development. What is the basis?

1140

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