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Benzenebutanoic acid, a-acetyl-b-oxo-, ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

412019-21-7

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412019-21-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 412019-21-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,1,2,0,1 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 412019-21:
(8*4)+(7*1)+(6*2)+(5*0)+(4*1)+(3*9)+(2*2)+(1*1)=87
87 % 10 = 7
So 412019-21-7 is a valid CAS Registry Number.

412019-21-7Relevant articles and documents

SmCl3-catalyzed C-acylation of 1,3-dicarbonyl compounds and malononitrile

Shen, Quansheng,Huang, Wen,Wang, Jialiang,Zhou, Xigeng

, p. 4491 - 4494 (2008/03/12)

(Chemical Equation Presented) A recyclable, convenient, and efficient catalytic system for C-acylation of 1,3-dicarbonyl compounds and malononitrile with acid chlorides has been developed, giving moderate to excellent yields under mild conditions. This is the first catalytic example of such reactions. In addition, by applying this protocol as the key step, 3,5-disubstituted-1H- pyrazole-4-carboxylate can easily be synthesized in high yields in a one-pot procedure.

Synthesis and cyclization reaction of pyrazolin-5-one derivatives

Jung, Jae-Chul,Blake Watkins,Avery, Mitchell A.

, p. 77 - 94 (2007/10/03)

A versatile synthetic method for preparing 3-pyrazolin-5-ones and 5,8-dihydro-1H-pyrazolo[1,2-a]pyridazines from simple β-keto esters is demonstrated. The synthetic strategies involve the acylation of β-keto esters, cyclocondensation with hydrazine followed by trapping with a diene under oxidative conditions.

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