77831-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77831-91-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,8,3 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 77831-91:
(7*7)+(6*7)+(5*8)+(4*3)+(3*1)+(2*9)+(1*1)=165
165 % 10 = 5
So 77831-91-5 is a valid CAS Registry Number.
InChI:InChI=1/C15H21NO/c1-15-7-8-16(2)10-12(15)5-3-11-4-6-13(17)9-14(11)15/h4,6,9,12,17H,3,5,7-8,10H2,1-2H3/t12-,15+/m0/s1