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349148-38-5

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349148-38-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 349148-38-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,9,1,4 and 8 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 349148-38:
(8*3)+(7*4)+(6*9)+(5*1)+(4*4)+(3*8)+(2*3)+(1*8)=165
165 % 10 = 5
So 349148-38-5 is a valid CAS Registry Number.

349148-38-5Relevant articles and documents

Synthesis of optically active 2-alkyl-3,4-iminobutanoic acids. β-amino acids containing an aziridine heterocycle

Park,Tian,Kim

, p. 3696 - 3703 (2007/10/03)

All four stereoisomers of 2-alkyl-3,4-iminobutanic acid, a novel class of β-amino acids bearing a chemically versatile aziridine ring, were synthesized starting with aspartic acid. The synthetic strategy involves the introduction of an alkyl group at the β-position of fully protected optically active aspartic acid followed by the construction of an aziridine ring making use of the α-carboxylate and α-amino groups. The α-carboxylate was reduced to the corresponding alcohol, which was then subjected to cyclization to form an aziridine ring with the N-protected amino group. Removal of the protection groups yielded the target compounds.

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