87-21-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87-21-8 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 87-21:
(4*8)+(3*7)+(2*2)+(1*1)=58
58 % 10 = 8
So 87-21-8 is a valid CAS Registry Number.
InChI:InChI=1/C14H20N2O2/c15-13-7-2-1-6-12(13)14(17)18-10-8-11-5-3-4-9-16-11/h1-2,6-7,11,16H,3-5,8-10,15H2