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544418-89-5

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544418-89-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 544418-89-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,4,4,4,1 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 544418-89:
(8*5)+(7*4)+(6*4)+(5*4)+(4*1)+(3*8)+(2*8)+(1*9)=165
165 % 10 = 5
So 544418-89-5 is a valid CAS Registry Number.

544418-89-5Downstream Products

544418-89-5Relevant academic research and scientific papers

Mild method for the selective esterification of carboxylic acids based on the Garegg-samuelsson reaction

Morcillo, Sara P.,Alvarez De Cienfuegos, Luis,Mota, Antonio J.,Justicia, Jose,Robles, Rafael

, p. 2277 - 2281 (2011)

A mild method for the selective esterification of primary alcohols is described. The use of different phosphines, I2, and imidazole allows the selective esterification of a wide variety of acids with excellent results. The generation of a bulky phosphonium-carboxylate salt as intermediate could justify the selectivity observed in this process. Additionally, amides also can be synthesized with use of this method.

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