4-[2’-(7’’-Deazaguanine)ethyl]benzoic Acid N-Hydroxysuccinimide Ester

4-[2’-(7’’-Deazaguanine)ethyl]benzoic Acid N-Hydroxysuccinimide Ester product with CAS: 204257-65-8 is also known as 4-[2-(2-Amino-4,7-dihydro-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoic Acid 2,5-Dioxo-1-pyrrolidinyl Ester. This product can be used as a working standard or secondary reference standard. Additional internal validation as per respective FDA regulations/guidelines may require. It is used in Guanine impurity profiling as per limits and threshold values specified by respective drug legislation, FDA, and pharmacopoeial guidelines. Moreover, 4-[2-(2-Amino-4,7-dihydro-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoic Acid 2,5-Dioxo-1-pyrrolidinyl Ester is also used in the process of Abbreviated New Drug Application (ANDA) filing to FDA and toxicity study of respective drug formulation.