72749-80-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72749-80-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,7,4 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 72749-80:
(7*7)+(6*2)+(5*7)+(4*4)+(3*9)+(2*8)+(1*0)=155
155 % 10 = 5
So 72749-80-5 is a valid CAS Registry Number.
InChI:InChI=1/C28H20N4O6S2.2Na/c29-20-14-23-21(16-26(20)40(36,37)38)31-28-19-12-7-13-25(39(33,34)35)27(19)22(30-17-8-3-1-4-9-17)15-24(28)32(23)18-10-5-2-6-11-18;;/h1-16H,(H4,29,30,33,34,35,36,37,38);;/q;2*+1/p-1