109757-83-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109757-83-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,7,5 and 7 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 109757-83:
(8*1)+(7*0)+(6*9)+(5*7)+(4*5)+(3*7)+(2*8)+(1*3)=157
157 % 10 = 7
So 109757-83-7 is a valid CAS Registry Number.