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3β,20-dihydroxy-6-keto-5ξ-bisnorchol-7-ene aldehyde 3-acetate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81918-40-3

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81918-40-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81918-40-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,1 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81918-40:
(7*8)+(6*1)+(5*9)+(4*1)+(3*8)+(2*4)+(1*0)=143
143 % 10 = 3
So 81918-40-3 is a valid CAS Registry Number.

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