What is the CAS number of PBTC

I apologize for the incorrect information in my previous response. The correct CAS number for PBTC (Phosphonobutane-1,2,4-Tricarboxylic Acid) is 136-77-6.

CAS number, which stands for Chemical Abstracts Service number, is a unique identifier assigned to specific chemical compounds. It serves as a universal method of identification for chemicals and helps in avoiding any confusion or misinterpretation regarding a particular compound. CAS numbers are widely used in chemical databases, regulatory compliance, research papers, and other scientific applications. They provide a standardized and reliable way to reference and track chemicals.