20520-33-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20520-33-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,5,2 and 0 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 20520-33:
(7*2)+(6*0)+(5*5)+(4*2)+(3*0)+(2*3)+(1*3)=56
56 % 10 = 6
So 20520-33-6 is a valid CAS Registry Number.
InChI:InChI=1/C13H20N2O4S.Na/c1-12(2,3)11(19)14-6-8(16)15-7(10(17)18)13(4,5)20-9(6)15;/h6-7,9H,1-5H3,(H,14,19)(H,17,18);/q;+1/p-1/t6-,7+,9-;/m1./s1