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cyclohexane-1r,2c,3c,4c-tetracarboxylic acid tetraethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

109558-50-1

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109558-50-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109558-50-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,5,5 and 8 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 109558-50:
(8*1)+(7*0)+(6*9)+(5*5)+(4*5)+(3*8)+(2*5)+(1*0)=141
141 % 10 = 1
So 109558-50-1 is a valid CAS Registry Number.
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