81988-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81988-77-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,8 and 8 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 81988-77:
(7*8)+(6*1)+(5*9)+(4*8)+(3*8)+(2*7)+(1*7)=184
184 % 10 = 4
So 81988-77-4 is a valid CAS Registry Number.
InChI:InChI=1/C34H46N2O17S/c1-8-14(3)31(43)50-16(5)34(46)15(4)49-22(10-21(34)47-7)52-27-25(39)29(33(45)11-19(38)24(35)23(28(33)40)30(41)42)51-20(12-48-17(6)37)26(27)53-32(44)18(9-2)36-13-54/h9,14-16,20-22,25-27,29,39,45-46H,8,10-12,35H2,1-7H3,(H,41,42)/b18-9-/t14-,15?,16+,20?,21?,22?,25?,26?,27?,29?,33-,34?/m0/s1