16672-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16672-99-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,6,7 and 2 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 16672-99:
(7*1)+(6*6)+(5*6)+(4*7)+(3*2)+(2*9)+(1*9)=134
134 % 10 = 4
So 16672-99-4 is a valid CAS Registry Number.
InChI:InChI=1/C20H12O3S/c21-15-10-11-16(24-12-6-2-1-3-7-12)18-17(15)19(22)13-8-4-5-9-14(13)20(18)23/h1-11,21H