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2H-Indol-2-one, 3-[2-(2,5-difluorophenyl)-2-oxoethylidene]-5-fluoro-1,3-dihydro- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

91021-17-9

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91021-17-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91021-17-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,0,2 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 91021-17:
(7*9)+(6*1)+(5*0)+(4*2)+(3*1)+(2*1)+(1*7)=89
89 % 10 = 9
So 91021-17-9 is a valid CAS Registry Number.

91021-17-9Relevant academic research and scientific papers

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