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2,3-O-isopropylidene-γ-D-ribonolactone (2R)-2-benzyl-2-methylacetoacetate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

259800-73-2

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259800-73-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 259800-73-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,9,8,0 and 0 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 259800-73:
(8*2)+(7*5)+(6*9)+(5*8)+(4*0)+(3*0)+(2*7)+(1*3)=162
162 % 10 = 2
So 259800-73-2 is a valid CAS Registry Number.

259800-73-2Relevant academic research and scientific papers

Asymmetric synthesis of quaternary α-amino acids using D-ribonolactone acetonide as chiral auxiliary

Moreno-Manas, Marcial,Trepat, Elisenda,Sebastian, Rosa M.,Vallribera, Adelina

, p. 4211 - 4224 (2007/10/03)

We describe a new simple methodology to prepare enantiopure α,α- dialkylglycines based on the use of commercially available D-ribonolactone as a chiral auxiliary. Enantiopure α-methyl and α-butyl series are prepared through diastereoselective alkylation and subsequent Schmidt rearrangement of α,α-dialkylacetoacetates of D-ribonolactone acetonide. Absolute configuration was assigned through preparation of enantiopure 4,4- disubstituted 3-methyl-2-pyrazolin-5-ones.

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