83221-44-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83221-44-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,2,2 and 1 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 83221-44:
(7*8)+(6*3)+(5*2)+(4*2)+(3*1)+(2*4)+(1*4)=107
107 % 10 = 7
So 83221-44-7 is a valid CAS Registry Number.
InChI:InChI=1/C28H20N10O11S.Na/c39-21(12-1-5-14(6-2-12)35-37-19-23(41)31-27(45)32-24(19)42)29-16-9-10-17(18(11-16)50(47,48)49)30-22(40)13-3-7-15(8-4-13)36-38-20-25(43)33-28(46)34-26(20)44;/h1-11,19-20H,(H,29,39)(H,30,40)(H,47,48,49)(H2,31,32,41,42,45)(H2,33,34,43,44,46);/q;+1/p-1