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87293-13-8

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87293-13-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87293-13-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,2,9 and 3 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 87293-13:
(7*8)+(6*7)+(5*2)+(4*9)+(3*3)+(2*1)+(1*3)=158
158 % 10 = 8
So 87293-13-8 is a valid CAS Registry Number.

87293-13-8Relevant articles and documents

Practical preparation of Z-α-(N-acetylamino)- and Z-α-(N-benzoylamino)-α,β-unsaturated acids

Jursic, Branko S.,Sagiraju, Sarada,Ancalade, Dustin K.,Clark, Traneil,Stevens, Edwin D.

, p. 1709 - 1714 (2008/02/01)

An efficient two-step synthetic procedure for the preparation of numerous variations of N-protected α,β-unsaturated α-amino acids and their corresponding esters from N-protected glycine and either aliphatic or aromatic aldehydes was developed. The reaction involved cyclization of the N-protected glycine into oxazolone, condensation with the aldehyde, and ring opening with a base. Copyright Taylor & Francis Group, LLC.

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