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109132-16-3

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109132-16-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109132-16-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,1,3 and 2 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 109132-16:
(8*1)+(7*0)+(6*9)+(5*1)+(4*3)+(3*2)+(2*1)+(1*6)=93
93 % 10 = 3
So 109132-16-3 is a valid CAS Registry Number.

109132-16-3Downstream Products

109132-16-3Relevant articles and documents

Synthesis and Characterisation ot Diastereomeric (4S)-3-Acetyl-2-aryl-5,5-dimethyl-4-thiazolidinecarboxylic Acids

Gyoergydeak, Zoltan,Kajtar, Judit,Kajtar, Marton,Kajtar-Peredy, Maria

, p. 281 - 286 (2007/10/02)

The condensation of aromatic aldehydes 1 and D-penicillamine (2) in aqueous methanol gives (4S)-2-aryl-5,5-dimethyl-4-thiazolidinecarboxylic acids 3 with alternating diastereoselectivity in position 2.Acetylation of the products with acetic anhydride in pyridine or in water gives rise to (2S,4S)-3-acetyl-2-aryl-5,5-dimethyl-4-thiazolidinecarboxylic acids 5.Use of a HCl/dioxane system in the reaction of N-acetyl-D-penicillamine (6) with aldehydes made possible the effective preparation of (2R,4S) compounds 8.The diastereommeric compounds 5 and 8 were characterized by (1)H- and (13)C-NMR data and optical rotation and CD.The results were compared with those compiled from the already synthesized diastereomeric (4R)-3-acetyl-2-aryl-4-thiazolidinecarboxylic acids.

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