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182621-57-4

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182621-57-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 182621-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,2,6,2 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 182621-57:
(8*1)+(7*8)+(6*2)+(5*6)+(4*2)+(3*1)+(2*5)+(1*7)=134
134 % 10 = 4
So 182621-57-4 is a valid CAS Registry Number.

182621-57-4Relevant articles and documents

A reliable and efficient synthesis of SR 142801

Giardina,Grugni, Mario,Rigolio, Roberto,Vassallo, Marco,Erhard, Karl,Farina, Carlo

, p. 2307 - 2310 (2007/10/03)

A convenient synthesis of the potent human NK-3 receptor antagonist SR 142801, (S)-(+)-N-{{3-[1-benzoyl-3-(3,4-dichlorophenyl)piperidin-3-yl]prop-1 -yl}-4-phenylpiperidin-4-yl}-N-methylacetamide [(S)-(+)-(15)], is described. Improvements over the previously reported procedure are the preparation of the intermediate 5 via the novel imide 3 and subsequent reaction with the nucleophile 14, which reacts, regioselectively, at the endocyclic nitrogen.

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