157555-21-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157555-21-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,5,5 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 157555-21:
(8*1)+(7*5)+(6*7)+(5*5)+(4*5)+(3*5)+(2*2)+(1*1)=150
150 % 10 = 0
So 157555-21-0 is a valid CAS Registry Number.