21688-11-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21688-11-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,8 and 8 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21688-11:
(7*2)+(6*1)+(5*6)+(4*8)+(3*8)+(2*1)+(1*1)=109
109 % 10 = 9
So 21688-11-9 is a valid CAS Registry Number.
InChI:InChI=1/C40H55N9O10S/c1-24(2)18-28(35(53)44-20-34(43)52)46-38(56)31-14-9-17-49(31)39(57)30(23-60-22-26-12-7-4-8-13-26)47-37(55)29(19-33(42)51)45-36(54)27(15-16-32(41)50)48-40(58)59-21-25-10-5-3-6-11-25/h3-8,10-13,24,27-31H,9,14-23H2,1-2H3,(H2,41,50)(H2,42,51)(H2,43,52)(H,44,53)(H,45,54)(H,46,56)(H,47,55)(H,48,58)