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(3S,4R)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-4-((R)-3-methoxymethoxy-1-methyl-2-oxo-propyl)-azetidin-2-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

202993-89-3

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202993-89-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 202993-89-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,9,9 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 202993-89:
(8*2)+(7*0)+(6*2)+(5*9)+(4*9)+(3*3)+(2*8)+(1*9)=143
143 % 10 = 3
So 202993-89-3 is a valid CAS Registry Number.

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