1637747-50-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1637747-50-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,7,7,4 and 7 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1637747-50:
(9*1)+(8*6)+(7*3)+(6*7)+(5*7)+(4*4)+(3*7)+(2*5)+(1*0)=202
202 % 10 = 2
So 1637747-50-2 is a valid CAS Registry Number.