70815-31-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 70815-31-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,8,1 and 5 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 70815-31:
(7*7)+(6*0)+(5*8)+(4*1)+(3*5)+(2*3)+(1*1)=115
115 % 10 = 5
So 70815-31-5 is a valid CAS Registry Number.
InChI:InChI=1/C25H22O9/c1-32-19-4-10(2-3-15(19)27)21-13-7-12(23-14(21)9-33-25(23,31)24(13)30)18-8-17(29)22-16(28)5-11(26)6-20(22)34-18/h2-7,13-14,18,21,23,26-28,31H,8-9H2,1H3/t13-,14+,18+,21+,23+,25-/m1/s1