156756-33-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156756-33-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,7,5 and 6 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 156756-33:
(8*1)+(7*5)+(6*6)+(5*7)+(4*5)+(3*6)+(2*3)+(1*3)=161
161 % 10 = 1
So 156756-33-1 is a valid CAS Registry Number.