1212154-18-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1212154-18-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,2,1,5 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1212154-18:
(9*1)+(8*2)+(7*1)+(6*2)+(5*1)+(4*5)+(3*4)+(2*1)+(1*8)=91
91 % 10 = 1
So 1212154-18-1 is a valid CAS Registry Number.