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4-[1-Amino-1-phenyl-meth-(E)-ylidene]-5-oxo-2-phenyl-4,5-dihydro-1H-pyrrole-3-carboxylic acid ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

54659-99-3

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54659-99-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54659-99-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,6,5 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 54659-99:
(7*5)+(6*4)+(5*6)+(4*5)+(3*9)+(2*9)+(1*9)=163
163 % 10 = 3
So 54659-99-3 is a valid CAS Registry Number.

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