5-benzoyl-2,2,3,3,7,7,8,8-octamethyl-1,4,6,9-tetraoxa-5λ5-phospha-spiro[4.4]nonane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 57244-57-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,2,4 and 4 respectively; the second part has 2 digits, 5 and 7 respectively. Calculate Digit Verification of CAS Registry Number 57244-57: (7*5)+(6*7)+(5*2)+(4*4)+(3*4)+(2*5)+(1*7)=132 132 % 10 = 2 So 57244-57-2 is a valid CAS Registry Number.