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6721-03-5

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6721-03-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6721-03-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,7,2 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 6721-03:
(6*6)+(5*7)+(4*2)+(3*1)+(2*0)+(1*3)=85
85 % 10 = 5
So 6721-03-5 is a valid CAS Registry Number.

6721-03-5Relevant articles and documents

Gram Scalable Method to Synthesize Biscarbodiimides and Asymmetric Monocarbodiimides: A Platform to Access an Array of Phosphaguanidines, Amidines, and Guanidines

Bailey, Brad,Camelio, Andrew M.,Davis, Anna,Krasovskiy, Arkady

, (2021/11/12)

A mild, broadly functional group tolerant methodology has been developed to access a variety of mono- and bis-carbodiimides in good yield and high purity on multigram scale. Direct addition into these versatile motifs facilitated the rapid synthesis of a library of novel amidinines, guanidines, and phosphaguandines.

Rhenium-Catalyzed Synthesis of 1,3-Diiminoisoindolines via Insertion of Carbodiimides into a C-H Bond of Aromatic and Heteroaromatic Imidates

Wang, Zijia,Sueki, Shunsuke,Kanai, Motomu,Kuninobu, Yoichiro

supporting information, p. 2459 - 2462 (2016/06/09)

The rhenium-catalyzed synthesis of 1,3-diiminoisoindolines and their related compounds from aromatic or heteroaromatic imidates and carbodiimides are reported via C-H bond activation. This reaction is the first example of a transition-metal-catalyzed inse

Pushing back the limits of hydrosilylation: Unprecedented catalytic reduction of organic ureas to formamidines

Pouessel, Jacky,Jacquet, Olivier,Cantat, Thibault

, p. 3552 - 3556 (2014/01/06)

Pushing back the limits: A novel catalytic transformation has been designed to prepare formamidine derivatives by reduction of substituted ureas with hydrosilanes. Simple iron catalysts based on commercially available iron salts and phosphine ligands prov

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