3445-91-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3445-91-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,4,4 and 5 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 3445-91:
(6*3)+(5*4)+(4*4)+(3*5)+(2*9)+(1*1)=88
88 % 10 = 8
So 3445-91-8 is a valid CAS Registry Number.
InChI:InChI=1/C31H24ClN9O12S4/c1-14-10-25(40-41-28-21-12-17(55(45,46)47)13-27(57(51,52)53)19(21)5-8-26(28)56(48,49)50)15(2)9-24(14)39-38-23-7-6-22(34-31-36-29(32)35-30(33)37-31)18-4-3-16(11-20(18)23)54(42,43)44/h3-13H,1-2H3,(H,42,43,44)(H,45,46,47)(H,48,49,50)(H,51,52,53)(H3,33,34,35,36,37)/b39-38+,41-40+