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554429-13-9

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554429-13-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 554429-13-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,4,4,2 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 554429-13:
(8*5)+(7*5)+(6*4)+(5*4)+(4*2)+(3*9)+(2*1)+(1*3)=159
159 % 10 = 9
So 554429-13-9 is a valid CAS Registry Number.

554429-13-9Downstream Products

554429-13-9Relevant articles and documents

Direct Synthesis of Free α-Amino Acids by Telescoping Three-Step Process from 1,2-Diols

Inada, Haruki,Shibuya, Masatoshi,Yamamoto, Yoshihiko

, p. 709 - 713 (2019)

A practical telescoping three-step process for the syntheses of α-amino acids from the corresponding 1,2-diols has been developed. This process enables the direct synthesis of free α-amino acids without any protection/deprotection step. This method was also effective for the preparation of a 15N-labeled α-amino acid. 1,2-Diols bearing α,β-unsaturated ester moieties afforded bicyclic α-amino acids through intramolecular [3 + 2] cycloadditions. A preliminary study suggests that the resultant α-amino acids are resolvable by aminoacylases with almost complete selectivity.

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