1640282-30-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1640282-30-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,4,0,2,8 and 2 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1640282-30:
(9*1)+(8*6)+(7*4)+(6*0)+(5*2)+(4*8)+(3*2)+(2*3)+(1*0)=139
139 % 10 = 9
So 1640282-30-9 is a valid CAS Registry Number.