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904328-01-4

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904328-01-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 904328-01-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,0,4,3,2 and 8 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 904328-01:
(8*9)+(7*0)+(6*4)+(5*3)+(4*2)+(3*8)+(2*0)+(1*1)=144
144 % 10 = 4
So 904328-01-4 is a valid CAS Registry Number.

904328-01-4Relevant articles and documents

Reduction of bis(5-alkyl-2-furyl)(2-nitroaryl)methane with aqueous titanium trichloride solution

Deng, Wei,Li, Dong-Kun,Tan, Jing-Yi,Xu, Zheng-Yang

supporting information, (2021/09/29)

In this article, we introduces a new method for the synthesis of substituted indole by reductive recyclization of bis(5-alkyl-2-furyl)(2-nitroaryl)methane. Bis(5-alkyl-2-furyl)(2-nitroaryl)methane undergo reduction to provide indole or aniline. In the pro

Furan ring opening-indole ring closure: Synthesis of furo[2′, 3′:3,4]-cycloheota[1,2-b]indolium chlorides

Butin, Alexander V.,Smirnov, Sergey K.,Stroganova, Tatyana A.

, p. 623 - 628 (2007/10/03)

A new synthetic approach to furo[2′,3′:3,4]cyclohepta[1,2-b] indolium chlorides is elaborated starting from 2-acetylaminoaryldifurylmethanes or 2-aminoaryldifurylmethanes under treatment with methanolic HCl solution. The reaction proceeds in three steps: recyclization, intramolecular cyclization, and disproportionation. In this case the furan ring takes part in building up both pyrrole and seven-membered rings. The same salts can be obtained directly from 2-acetylaminobenzaldehydes and 2-methylfuran under similar conditions without isolation of corresponding 2-acetylaminoaryldifurylmethanes.

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