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137023-71-3

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137023-71-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137023-71-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,0,2 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 137023-71:
(8*1)+(7*3)+(6*7)+(5*0)+(4*2)+(3*3)+(2*7)+(1*1)=103
103 % 10 = 3
So 137023-71-3 is a valid CAS Registry Number.

137023-71-3Downstream Products

137023-71-3Relevant academic research and scientific papers

An efficient copper(II)-catalyzed direct access to primary amides from aldehydes under neat conditions

Ganguly, Nemai C.,Roy, Sushmita,Mondal, Pallab

, p. 1413 - 1416 (2012)

A simple expeditious one-pot conversion of a wide assortment of aldehydes to corresponding primary amides in good to excellent yields has been accomplished employing hydroxylamine hydrochloride (1 mol equiv), sodium acetate (1.1 mol equiv), and copper sulfate pentahydrate (5 mol %) under neat conditions at 110 °C. The protocol based upon ligand-free copper (II)-catalysis avoids the use of relatively expensive late transition metal-based catalysts, and is performed under operationally simple conditions without any demanding procedure of isolation and purification of products.

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