1638744-06-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1638744-06-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,8,7,4 and 4 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1638744-06:
(9*1)+(8*6)+(7*3)+(6*8)+(5*7)+(4*4)+(3*4)+(2*0)+(1*6)=195
195 % 10 = 5
So 1638744-06-5 is a valid CAS Registry Number.