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185454-47-1

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185454-47-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 185454-47-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,5,4,5 and 4 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 185454-47:
(8*1)+(7*8)+(6*5)+(5*4)+(4*5)+(3*4)+(2*4)+(1*7)=161
161 % 10 = 1
So 185454-47-1 is a valid CAS Registry Number.

185454-47-1Relevant articles and documents

Synthesis of terfenadine carboxylate

Patel, Sunil,Waykole, Liladhar,Repic, Oljan,Chen, Kau-Ming

, p. 4699 - 4710 (1996)

A synthesis of terfenadine carboxylate, 1, a metabolite of terfenadine 2, is described. In the key step, the sodium salt of 2-(4-bromo-phenyl)-2-methylpropionic acid, 7, was lithiated via a metal-halogen exchange using t-BuLi and subsequently condensed with 4-[4-(hydroxydiphenylmethylpiperidin-1-yl]butyraldehyde, 5, to afford terfenadine carboxylate, 1.

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