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83551-37-5

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83551-37-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83551-37-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,5,5 and 1 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 83551-37:
(7*8)+(6*3)+(5*5)+(4*5)+(3*1)+(2*3)+(1*7)=135
135 % 10 = 5
So 83551-37-5 is a valid CAS Registry Number.

83551-37-5Relevant articles and documents

An Environment-friendly Synthesis of 2,3-Disubstituted-2-iminothiazoline-4-ones

Meng, Ge,Zheng, Meilin,Dong, Mengshu,Wang, Mei,Zheng, Aqun,Guo, Zengjun

, p. 588 - 594 (2016)

A series of 2,3-substituted-2-iminothiazoline-4-ones derivatives have been synthesized via an improved method including an auto-catalyzed reaction. This method avoided using any extra catalyst except for the reaction material. This method has been successful in both the aromatic substituted 2-iminothiazolines and the alkyl substituted 2-iminothiazolines. The special product with a hydroxyl group on the 2-iminogroup of 1,3-thiazoline-4-ones has also been obtained unexpectedly. The possible mechanism has been proposed for the special process of dealkylation and hydroxylation. This method offered a special way to afford the 2-hydroxyimino-substituted thiazoline-4-one derivatives in an efficient and eco-friendly way. The mechanism of the transformation under acid condition has also been proposed.

The Reaction of Isatin with Active Methylene Group. Part-I: Formation of 5-(2-Oxo-3-Indolinylidene)-3-Aryl-2,4-Thiazolidindiones - A New Class of Thioindigoid Dyes

Lakhan, Ram,Bhargava, P. N.,Prasad, Salik

, p. 804 - 806 (2007/10/02)

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