21000-42-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21000-42-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,0 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 21000-42:
(7*2)+(6*1)+(5*0)+(4*0)+(3*0)+(2*4)+(1*2)=30
30 % 10 = 0
So 21000-42-0 is a valid CAS Registry Number.
InChI:InChI=1/C10H9N2O4P/c13-17(14,15-9-5-1-3-7-11-9)16-10-6-2-4-8-12-10/h1-8H,(H,13,14)