68134-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 68134-21-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,1,3 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 68134-21:
(7*6)+(6*8)+(5*1)+(4*3)+(3*4)+(2*2)+(1*1)=124
124 % 10 = 4
So 68134-21-4 is a valid CAS Registry Number.
InChI:InChI=1/C41H31N9O15S3/c1-65-29-11-6-25(7-12-29)45-49-40-38(68(62,63)64)17-22-16-30(66(56,57)58)21-34(39(22)41(40)53)48-47-32-14-9-27(19-36(32)52)42-26-8-13-31(35(51)18-26)46-44-24-4-2-23(3-5-24)43-33-15-10-28(50(54)55)20-37(33)67(59,60)61/h2-21,42-43,51-53H,1H3,(H,56,57,58)(H,59,60,61)(H,62,63,64)