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618386-92-8

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618386-92-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 618386-92-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,1,8,3,8 and 6 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 618386-92:
(8*6)+(7*1)+(6*8)+(5*3)+(4*8)+(3*6)+(2*9)+(1*2)=188
188 % 10 = 8
So 618386-92-8 is a valid CAS Registry Number.

618386-92-8Relevant articles and documents

A short multigram asymmetric synthesis of prostanoid scaffolds

Depré, Dominique,Chen, Lian-Yong,Ghosez, Léon

, p. 6797 - 6812 (2007/10/03)

Enantiomerically pure polysubstituted cyclopentanes which can be regarded as prostanoid scaffolds have been prepared by an efficient synthetic sequence readily applicable to the preparation of multigram quantities. The first key reaction is the diastereoselective allylmetallation of oxoamide 4 which is readily prepared from γ-butyrolactone and an enantiomerically pure 2,5-dimethylpyrrolidine. The second key-step is an intramolecular [2+2] cycloaddition of a keteneiminium salt leading to bicylo[3.2.0] heptanones. These intermediates have been easily transformed into a variety of prostanoid scaffolds of high enantiomeric purities.

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