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83509-91-5

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83509-91-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83509-91-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,5,0 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 83509-91:
(7*8)+(6*3)+(5*5)+(4*0)+(3*9)+(2*9)+(1*1)=145
145 % 10 = 5
So 83509-91-5 is a valid CAS Registry Number.

83509-91-5Downstream Products

83509-91-5Relevant articles and documents

Synthesis of β-Amino-acid Peptides. Part 3. Preparation of Racemic and Chiral 3-Aminobutyric Acid Derivatives and Peptides Using Dihydrooxazin-6-ones and Conventional Coupling Reagents

Drey, Charles N. C.,Mtetwa, Eli

, p. 1587 - 1592 (2007/10/02)

Peptides of R,S and S-3-aminobutyric acid have been prepared by conventional methods and also by using chiral oxazin-6-ones, the latter method proving to be superior because of the absence of the side-reactions.S-3-Aminobutyric acid derivatives were prepared by Arndt-Eistert homologation.

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