Dear All,

I want to know some thing about toxicity studies of impurities, any body can reply me that if we want to conduct toxicity study of impurity then we have to conduct it on pure impurities only all time, in my knoledge that if impurity is lest then certan percentage in compound then we can conduct study directly on compound also for toxicity study of impurity.

What is the maximum percentage of impurities is valide in compound.

Thanx in advance

Chintan Patel