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3-Nitro-2-carbethoxy-benzoyl-malonsaeure-diethylester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

30991-03-8

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30991-03-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 30991-03-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,9,9 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 30991-03:
(7*3)+(6*0)+(5*9)+(4*9)+(3*1)+(2*0)+(1*3)=108
108 % 10 = 8
So 30991-03-8 is a valid CAS Registry Number.

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