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1384881-43-9

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1384881-43-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1384881-43-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,8,4,8,8 and 1 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1384881-43:
(9*1)+(8*3)+(7*8)+(6*4)+(5*8)+(4*8)+(3*1)+(2*4)+(1*3)=199
199 % 10 = 9
So 1384881-43-9 is a valid CAS Registry Number.

1384881-43-9Downstream Products

1384881-43-9Relevant articles and documents

Stereoselective functionalization of pyrrolidinone moiety towards the synthesis of salinosporamide A

Barbion, Julien,Sorin, Geoffroy,Selkti, Mohamed,Kellenberger, Esther,Baati, Rachid,Santoro, Stefano,Himo, Fahmi,Pancrazi, Ange,Lannou, Marie-Isabelle,Ardisson, Janick

, p. 6504 - 6512 (2012/08/27)

An important feature of the synthesis of salinosporamide A, a potent proteasome inhibitor, is the establishment of the quaternary stereocenter at C3. A new route has been developed based on the methylation of a functionalized pyrrolidinone. Direct methylation reaction led to the unwanted diastereomer; however, by means of a Corey-Chaykovsky reaction followed by LiAlH4 epoxide opening, the desired alcohol was obtained. The pyrrolidinone was elaborated through a key allylation reaction between a tertiary allyltitanium reagent and an aldehyde bearing a spiroketal moiety in α-position.

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