23241-56-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23241-56-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,2,4 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 23241-56:
(7*2)+(6*3)+(5*2)+(4*4)+(3*1)+(2*5)+(1*6)=77
77 % 10 = 7
So 23241-56-7 is a valid CAS Registry Number.
InChI:InChI=1/C25H17NO13/c26-9(23(34)35)4-6-1-2-10(27)7(3-6)13-20(31)17-16(22(33)21(13)32)18(29)8-5-11(28)14(24(36)37)15(25(38)39)12(8)19(17)30/h1-3,5,9,27-28,31-33H,4,26H2,(H,34,35)(H,36,37)(H,38,39)