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5-bromomethylcyclopenta-6-one-7,7-dimethyl-3,4-dihydro-1(H)-2-benzopyran-1-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

121389-53-5

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121389-53-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121389-53-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,3,8 and 9 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 121389-53:
(8*1)+(7*2)+(6*1)+(5*3)+(4*8)+(3*9)+(2*5)+(1*3)=115
115 % 10 = 5
So 121389-53-5 is a valid CAS Registry Number.

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