1217712-92-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1217712-92-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,7,7,1 and 2 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1217712-92:
(9*1)+(8*2)+(7*1)+(6*7)+(5*7)+(4*1)+(3*2)+(2*9)+(1*2)=139
139 % 10 = 9
So 1217712-92-9 is a valid CAS Registry Number.