13991-87-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13991-87-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,9,9 and 1 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 13991-87:
(7*1)+(6*3)+(5*9)+(4*9)+(3*1)+(2*8)+(1*7)=132
132 % 10 = 2
So 13991-87-2 is a valid CAS Registry Number.
InChI:InChI=1/2C6H8O2.Cu/c2*1-2-3-4-5-6(7)8;/h2*2-5H,1H3,(H,7,8);/q;;+2/p-2/b2*3-2+,5-4+;