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1581266-93-4

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1581266-93-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1581266-93-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,8,1,2,6 and 6 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1581266-93:
(9*1)+(8*5)+(7*8)+(6*1)+(5*2)+(4*6)+(3*6)+(2*9)+(1*3)=184
184 % 10 = 4
So 1581266-93-4 is a valid CAS Registry Number.

1581266-93-4Relevant articles and documents

A Concise Approach for Producing Optically Pure Carboxylic Acid Segments for the Synthesis of Bicyclic Depsipeptide Histone Deacetylase Inhibitors

Narita, Koichi,Sayar, Noel,Saijo, Ken,Ishioka, Chikashi,Katoh, Tadashi

, p. 1408 - 1418 (2019)

Optically pure carboxylic acid segments, which are common key intermediates for the synthesis of naturally occurring bicyclic depsipeptide histone deacetylase inhibitors, have been produced efficiently. The method features the chromatographic separation of two diastereomers, which were formed by direct amide condensation of racemic (3 RS,4 E)-3-hydroxy-7-mercaptohept-4-enoic acid (rac -Hmh) with chiral amino acids. This approach offers a reliable and practical method for producing optically pure carboxylic acid segments, which can facilitate easier access to important anticancer agents derived from them.

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