547-52-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 547-52-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,4 and 7 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 547-52:
(5*5)+(4*4)+(3*7)+(2*5)+(1*2)=74
74 % 10 = 4
So 547-52-4 is a valid CAS Registry Number.
InChI:InChI=1/C12H13N3O4S2/c13-9-1-5-12(6-2-9)21(18,19)15-10-3-7-11(8-4-10)20(14,16)17/h1-8,15H,13H2,(H2,14,16,17)
547-52-4Relevant articles and documents
Carbonic anhydrase inhibitors. Part 61. Quantum chemical QSAR of a group of benzenedisulfonamides
Clare, Brian W.,Supuran, Claudiu T.
, p. 463 - 474 (2007/10/03)
The synthesis of a large group of benzenesulfonamides containing both a primary and secondary sulfonamide moiety is described. These compounds are powerful inhibitors of several isozymes of the enzyme carbonic anhydrase. Separate QSAR's are given for inhi