1233923-19-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1233923-19-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,3,9,2 and 3 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1233923-19:
(9*1)+(8*2)+(7*3)+(6*3)+(5*9)+(4*2)+(3*3)+(2*1)+(1*9)=137
137 % 10 = 7
So 1233923-19-7 is a valid CAS Registry Number.