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6454-01-9

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6454-01-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6454-01-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,5 and 4 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 6454-01:
(6*6)+(5*4)+(4*5)+(3*4)+(2*0)+(1*1)=89
89 % 10 = 9
So 6454-01-9 is a valid CAS Registry Number.

6454-01-9Relevant articles and documents

Synthesis of carbonylated heteroaromatic compounds: Via visible-light-driven intramolecular decarboxylative cyclization of o -alkynylated carboxylic acids

Gao, Fei,Wang, Jiu-Tao,Liu, Lin-Lin,Ma, Na,Yang, Chao,Gao, Yuan,Xia, Wujiong

, p. 8533 - 8536 (2017/08/04)

An efficient strategy for the easy access to carbonylated heteroaromatic compounds has been developed via a visible-light-promoted intramolecular decarboxylative cyclization reaction of o-alkynylated carboxylic acids. This method is characterized by its b

Intramolecular Ketene Cycloadditions. Synthesis of Isoflavones and 3-Aroylbenzofurans

Brady, William T.,Gu, Yi-Qi

, p. 1353 - 1356 (2007/10/02)

The conversion of 2-(carboxyalkoxy)benzils to the corresponding phenoxyketenes to an intramolecular ketene cycloaddition to ultimately yield isoflavones and/or 3-aroylbenzofurans.The ketenes may be generated by the classical dehydrochlorination of the acid chloride or by using Perkin reaction conditions, sodium acetate in refluxing acetic anhydride.The initial cycloaddition products are the corresponding β-lactones, which may decarboxylate to the isolated isoflavones and/or 2-aroylbenzofurans.The product distributions are dependent upon the substitution pattern in the orginal benzil acids.

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