The CAS Registry Mumber 1173018-58-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,3,0,1 and 8 respectively; the second part has 2 digits, 5 and 8 respectively. Calculate Digit Verification of CAS Registry Number 1173018-58: (9*1)+(8*1)+(7*7)+(6*3)+(5*0)+(4*1)+(3*8)+(2*5)+(1*8)=130 130 % 10 = 0 So 1173018-58-0 is a valid CAS Registry Number.
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Aldrich
(537977) 4-Ethylbenzenesulfonylchloride-functionalizedsilicagel 200-400 mesh, extent of labeling: 1.0 mmol/g loading