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90656-49-8

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90656-49-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90656-49-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,6,5 and 6 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 90656-49:
(7*9)+(6*0)+(5*6)+(4*5)+(3*6)+(2*4)+(1*9)=148
148 % 10 = 8
So 90656-49-8 is a valid CAS Registry Number.

90656-49-8Relevant articles and documents

Metal catalyst-free amination of 2-chloro-5-nitrobenzoic acid in superheated water

Lan, Cong,Xia, Zhi-Ning,Li, Zheng-Hua,Liang, Rong-Hui

, p. 726 - 728 (2013/02/23)

A series of N-arylanthranilic acid derivatives were synthesised by amination of 2-chloro-5-nitrobenzoic acid with various arylamine in superheated water with potassium carbonate as base. Good yields were achieved within 2-3 h at 150-190 °C. The results indicated that this metal catalyst-free method is a simple, environmentally-friendly and efficient synthesis of N-phenylanthranilic acid derivatives. Furthermore, it will work with an alkylamine and phenol.

Catalyst-free microwave-assisted amination of 2-chloro-5-nitrobenzoic acid

Baqi, Younis,Mueller, Christa E.

, p. 5908 - 5911 (2008/02/10)

(Chemical Equation Presented) The synthesis of N-substituted 5-nitroanthranilic acid derivatives 3a-w was achieved by a new, mild, microwave-assisted, regioselective amination reaction of 5-nitro-2-chlorobenzoic acid (1a) with a diverse range of aliphatic

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