215780-38-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 215780-38-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,5,7,8 and 0 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 215780-38:
(8*2)+(7*1)+(6*5)+(5*7)+(4*8)+(3*0)+(2*3)+(1*8)=134
134 % 10 = 4
So 215780-38-4 is a valid CAS Registry Number.