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237736-40-2

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237736-40-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 237736-40-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,7,7,3 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 237736-40:
(8*2)+(7*3)+(6*7)+(5*7)+(4*3)+(3*6)+(2*4)+(1*0)=152
152 % 10 = 2
So 237736-40-2 is a valid CAS Registry Number.

237736-40-2Relevant articles and documents

Diastereodivergent synthesis of the C9-cyclopentanone chiral building blocks

Nagata,Kawamura,Ogasawara

, p. 1825 - 1834 (2007/10/03)

Diastereodivergent synthesis the C9-cyclopentanone chiral building block, serving as the non-tryptamine moiety of the Corynanthe type indole alkaloids and the related natural products, and its diastereomer has been developed from racemic norcamphor by employing lipase-mediated resolution via an allylic acetate intermediate having a bicyclo[3.2.1]octane framework. A potential of the latter diastereomer has been demonstrated by its conversion into (-)-semburin, a monoterpene isolated from Swertia japonica previously and obtained from the C9-block.

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