72156-20-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72156-20-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,1,5 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 72156-20:
(7*7)+(6*2)+(5*1)+(4*5)+(3*6)+(2*2)+(1*0)=108
108 % 10 = 8
So 72156-20-8 is a valid CAS Registry Number.
InChI:InChI=1/C17H19FN5O11P/c1-8-16(24)10(9(4-20-8)7-34-35(31,32)33)5-19-6-13(17(25)26)21-12-2-11(18)14(22(27)28)3-15(12)23(29)30/h2-4,13,19,21,24H,5-7H2,1H3,(H,25,26)(H2,31,32,33)