"N,N-diethyl-P-methyl-phosphonamidic O,O'-dipropyl-phosphorous anhydride" is a complex organophosphorus compound with the chemical formula C10H24NO5P2. N,N-diethyl-P-methyl-phosphonamidic O,O'-dipropyl-phosphorous anhydride is characterized by its phosphonamidic structure, where a phosphorus atom is bonded to a nitrogen atom through a double bond, and the nitrogen is further bonded to two ethyl groups. The phosphorus atom is also connected to a methyl group and an O,O'-dipropyl-phosphorous anhydride group, which contributes to the molecule's anhydride nature. This class of compounds is known for their potential applications in chemical warfare due to their ability to inhibit acetylcholinesterase, an enzyme crucial for the nervous system's function. However, it is important to note that the use of such chemicals for warfare is prohibited under international law, and their mention here is for educational purposes only, to understand their chemical structure and potential hazards.
The CAS Registry Mumber 4526-11-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,5,2 and 6 respectively; the second part has 2 digits, 1 and 1 respectively. Calculate Digit Verification of CAS Registry Number 4526-11: (6*4)+(5*5)+(4*2)+(3*6)+(2*1)+(1*1)=78 78 % 10 = 8 So 4526-11-8 is a valid CAS Registry Number.