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84571-21-1

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84571-21-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84571-21-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,5,7 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 84571-21:
(7*8)+(6*4)+(5*5)+(4*7)+(3*1)+(2*2)+(1*1)=141
141 % 10 = 1
So 84571-21-1 is a valid CAS Registry Number.

84571-21-1Relevant articles and documents

Dehydrogenation of Nitrogen Heterocycles Using Graphene Oxide as a Versatile Metal-Free Catalyst under Air

Zhang, Jingyu,Chen, Shiya,Chen, Fangfang,Xu, Wensheng,Deng, Guo-Jun,Gong, Hang

, p. 2358 - 2363 (2017)

Graphene oxide (GO) has been developed as an inexpensive, environmental friendly, metal-free carbocatalyst for the dehydrogenation of nitrogen heterocycles. Valuable compounds, such as quinoline, 3,4-dihydroisoquinoline, quinazoline, and indole derivatives, have been successfully used as substrates. The investigation of various oxygen-containing molecules with different conjugated systems indicated that both the oxygen-containing groups and large π-conjugated system in GO sheets are essential for this reaction. (Figure presented.).

1,3-Unsubstituted 1,2,3,4-Tetrahydroquinazolines from 1,3-Diamines

Kempter, G.,Ehrlichmann, W.,Plesse, M.,Lehm, H.-U.

, p. 832 - 840 (2007/10/02)

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