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5,5-diphenyl-3-[2-(1,1,3-trioxo-1,3-dihydro-1λ6-benzo[d]isothiazol-2-yl)-ethyl]-imidazolidine-2,4-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

21491-28-1

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21491-28-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21491-28-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,4,9 and 1 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21491-28:
(7*2)+(6*1)+(5*4)+(4*9)+(3*1)+(2*2)+(1*8)=91
91 % 10 = 1
So 21491-28-1 is a valid CAS Registry Number.

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