N-Nitroso Sildenafil

N-Nitroso Sildenafil product with CAS: is also known as 5-(2-ethoxy-5-(4- methylpiperazin-1- ylsulfonyl)phenyl)-1-methyl-6- nitroso-3-propyl-1Hpyrazolo[ 4,3-d]pyrimidin-7(6H)- one. This product can be used as a working standard or secondary reference standard. Additional internal validation as per respective FDA regulations/guidelines may require. N-Nitroso Sildenafil is generally used for Quality Control (QC), Quality Assurance (QA) during commercial production of Nitrosamine and its related formulations. Moreover,5-(2-ethoxy-5-(4- methylpiperazin-1- ylsulfonyl)phenyl)-1-methyl-6- nitroso-3-propyl-1Hpyrazolo[ 4,3-d]pyrimidin-7(6H)- one is also used in the process of Abbreviated New Drug Application (ANDA) filing to FDA and toxicity study of respective drug formulation.