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90690-76-9

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90690-76-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90690-76-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,6,9 and 0 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 90690-76:
(7*9)+(6*0)+(5*6)+(4*9)+(3*0)+(2*7)+(1*6)=149
149 % 10 = 9
So 90690-76-9 is a valid CAS Registry Number.

90690-76-9Relevant articles and documents

Ammonium nitrate: A biodegradable and efficient catalyst for the direct amidation of esters under solvent-free conditions

Ramesh, Perla,Fadnavis, Nitin W.

supporting information, p. 138 - 140 (2015/02/19)

A simple, metal-free, and environment-friendly procedure is developed for the direct conversion of esters to amides using ammonium nitrate as a catalyst under solvent-free conditions. Aryls, heteroaryls, and aliphatic esters are easily converted to the corresponding amides in excellent isolated yields (85-99%). An enantiopure ester and amine were both shown to react without racemization. The methodology has been successfully applied to preparation of procainamide.

N-[hydroxy(amino)alkyl]amides of amino(nitro)benzoic acids

Bagrov,Vasil'ev,Efimov,Kol'tsov

, p. 674 - 678 (2007/10/03)

2-Aminoethanol and 3-amino-1-propanol react with methyl 3-nitro-and 4-nitrobenzoates in boiling toluene to afford the corresponding ethyl N-(hydroxyalkyl)nitrobenzoates. The reaction of methyl 3-nitro-and 4-nitrobenzoates with bis(2-hydroxyethyl)amine yie

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