10-27-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 10-27-5 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 1 and 0 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 10-27:
(4*1)+(3*0)+(2*2)+(1*7)=15
15 % 10 = 5
So 10-27-5 is a valid CAS Registry Number.
InChI:InChI=1/C20H22O7/c1-25-17-8-12(3-5-15(17)21)7-14-11-27-19(23)20(14,24)10-13-4-6-16(22)18(9-13)26-2/h3-6,8-9,14,21-22,24H,7,10-11H2,1-2H3/t14-,20-/m1/s1