271780-33-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 271780-33-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,1,7,8 and 0 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 271780-33:
(8*2)+(7*7)+(6*1)+(5*7)+(4*8)+(3*0)+(2*3)+(1*3)=147
147 % 10 = 7
So 271780-33-7 is a valid CAS Registry Number.