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500149-85-9

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500149-85-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 500149-85-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,0,1,4 and 9 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 500149-85:
(8*5)+(7*0)+(6*0)+(5*1)+(4*4)+(3*9)+(2*8)+(1*5)=109
109 % 10 = 9
So 500149-85-9 is a valid CAS Registry Number.

500149-85-9Relevant articles and documents

On the para-selective chlorination of ortho-cresol

Bugnet, Emmanuelle A,Brough, Adrian R,Greatrex, Robert,Kee, Terence P

, p. 8059 - 8065 (2002)

Merrifield-bound o-cresol undergoes electrophilic aromatic chlorination using SO2Cl2 leading to para/ortho ratios in excess of 50, the highest such ratio reported for this chlorinating agent. Model studies suggest that this significant para/ortho ratio results not just from steric effects but that considerable electronic influence can be detected.

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