72138-93-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72138-93-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,1,3 and 8 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 72138-93:
(7*7)+(6*2)+(5*1)+(4*3)+(3*8)+(2*9)+(1*3)=123
123 % 10 = 3
So 72138-93-3 is a valid CAS Registry Number.
InChI:InChI=1/C21H16ClF2N7O7S2.2Na/c1-9-14(25-19-16(22)18(23)26-21(24)27-19)7-13(40(36,37)38)8-15(9)28-29-17-10(2)30-31(20(17)32)11-3-5-12(6-4-11)39(33,34)35;;/h3-8,17H,1-2H3,(H,25,26,27)(H,33,34,35)(H,36,37,38);;/q;2*+1/p-2