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4,4a,6,7-tetrahydro-5,5-dimethylspiro[3H-2-benzopyran-3,2'-[1,3]dioxolan]-8(5H)-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

253446-30-9

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253446-30-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 253446-30-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,3,4,4 and 6 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 253446-30:
(8*2)+(7*5)+(6*3)+(5*4)+(4*4)+(3*6)+(2*3)+(1*0)=129
129 % 10 = 9
So 253446-30-9 is a valid CAS Registry Number.

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