N,N'-ditosyl-1,2,3,5,6,7-hexahydronaphtho<2,3-e><1,4,7>oxadiazonine is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 99259-79-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,2,5 and 9 respectively; the second part has 2 digits, 7 and 9 respectively. Calculate Digit Verification of CAS Registry Number 99259-79: (7*9)+(6*9)+(5*2)+(4*5)+(3*9)+(2*7)+(1*9)=197 197 % 10 = 7 So 99259-79-7 is a valid CAS Registry Number.