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

845

What are some common isotopes of Actinium, and how do they differ in terms of stability and uses?

690

before starting analytical method valodation what you checking? and how giving preference to start validation?

813

Besides the extent of branching, can you think of any other structural parameters that might lead to differences in physical properties? : Polymer Chemistry

1308

How to find peaks in ftir chromatography

1687

Suppose we prepared pH buffer solution in lab.and calibrate against NIST solution, and same shall going to used upto 30 days. is it possible to stable pH and appearance? suggest?

1901

Why is sulphuric acid added during the preparation of standard fas solution?

1047

Explain how buffer works?

1119

give clarity of linearity and range in method validation

2422

Protactinium-231 decays to Uranium-235. How is this decay used in radiometric dating and the determination of geological ages?

579

Difference between hlaf and rlaf

2117

Why USP put two methods for tapped density? When I should use each one?

3149

What are the uses of glacial acetic acid?

1121

What is phase transfer catalyst?

1111

write short note on steroids,terpenes,prostagladins,and phospholipids.

6399