213765-78-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 213765-78-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,7,6 and 5 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 213765-78:
(8*2)+(7*1)+(6*3)+(5*7)+(4*6)+(3*5)+(2*7)+(1*8)=137
137 % 10 = 7
So 213765-78-7 is a valid CAS Registry Number.