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340039-87-4

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340039-87-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 340039-87-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,0,0,3 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 340039-87:
(8*3)+(7*4)+(6*0)+(5*0)+(4*3)+(3*9)+(2*8)+(1*7)=114
114 % 10 = 4
So 340039-87-4 is a valid CAS Registry Number.

340039-87-4Relevant articles and documents

The imine (+)-pseudoephedrine glycinamide: A useful reagent for the asymmetric synthesis of (R)-α-amino acids

Guillena, Gabriela,Najera, Carmen

, p. 181 - 183 (2001)

The new imine derived from Myers (+)-pseudoephedrine glycinamide can be diastereoselectively alkylated with alkyl halides at room temperature using NaOEt or LiO-tert-Bu as bases under phase transfer conditions. Hydrolysis to the corresponding alkylated products was easily achieved under mild conditions to afford (R)-α-amino acids.

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