CAS: 100199-40-4

Pencyclovir Impurity 1 is a drug product that is used as an analytical reference for metabolism studies. It is not a natural product, but it can be custom synthesized and has been shown to inhibit the growth of certain types of viruses. Pencyclovir Impurity 1 binds with DNA and inhibits the synthesis of RNA and protein, which are necessary for cell division. The purity level of this drug product should be at least 98%. This impurity can be found in the CAS number 100199-40-4.