72139-12-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72139-12-9 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 9 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 72139-12:
(7*7)+(6*2)+(5*1)+(4*3)+(3*9)+(2*1)+(1*2)=109
109 % 10 = 9
So 72139-12-9 is a valid CAS Registry Number.
InChI:InChI=1/C24H14Cl3N5O8S2.2Na/c25-18-22(26)31-24(27)32-23(18)30-12-6-5-9(7-14(12)41(35,36)37)29-13-8-15(42(38,39)40)19(28)17-16(13)20(33)10-3-1-2-4-11(10)21(17)34;;/h1-8,29H,28H2,(H,30,31,32)(H,35,36,37)(H,38,39,40);;/q;2*+1/p-2