137853-57-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137853-57-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,8,5 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 137853-57:
(8*1)+(7*3)+(6*7)+(5*8)+(4*5)+(3*3)+(2*5)+(1*7)=157
157 % 10 = 7
So 137853-57-7 is a valid CAS Registry Number.