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5-phenyl-2-trimethylsilanyloxy-isoxazolidine-3-carboxylic acid methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

50491-21-9

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50491-21-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 50491-21-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,0,4,9 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 50491-21:
(7*5)+(6*0)+(5*4)+(4*9)+(3*1)+(2*2)+(1*1)=99
99 % 10 = 9
So 50491-21-9 is a valid CAS Registry Number.
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