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264277-40-9

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264277-40-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 264277-40-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,4,2,7 and 7 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 264277-40:
(8*2)+(7*6)+(6*4)+(5*2)+(4*7)+(3*7)+(2*4)+(1*0)=149
149 % 10 = 9
So 264277-40-9 is a valid CAS Registry Number.

264277-40-9Downstream Products

264277-40-9Relevant articles and documents

Efficient synthesis of 1-heterocyclic-3-aminopyrrolidinones

Bell, Ian M.,Beshore, Douglas C.,Gallicchio, Steven N.,Williams, Theresa M.

, p. 1141 - 1145 (2007/10/03)

A novel two-step synthesis of optically active 3-aminopyrrolidinones is described. The route allows access to pyrrolidinones with heterocyclic functionality that is incompatible with known methodology, and affords the final products in good to excellent yield and high enantiomeric purity. The Mitsunobu cyclodehydration is shown to be an efficient method for the formation of a variety of γ-lactams. (C) 2000 Published by Elsevier Science Ltd.

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