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2-Butynoic acid, 4-(acetyloxy)-, methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

68691-05-4

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68691-05-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 68691-05-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,6,9 and 1 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 68691-05:
(7*6)+(6*8)+(5*6)+(4*9)+(3*1)+(2*0)+(1*5)=164
164 % 10 = 4
So 68691-05-4 is a valid CAS Registry Number.

68691-05-4Relevant academic research and scientific papers

Reactivity of Malonyl Radicals. Synthesis of Substituted Dihydronaphthalenes by Mn(III) Oxidation of Diethyl α-Benzylmalonate in the Presence of Alkynes

Santi, Roberto,Bergamini, Fabrizio,Citterio, Attilio,Sebastiano, Roberto,Nicolini, Marco

, p. 4250 - 4255 (2007/10/02)

Oxidation of diethyl α-benzylmalonate (1) by Mn(III) acetate in acetic acid at 70 deg C in the presence of alkynes 2a-j leads to dihydronaphthalene derivatives 3a-j in moderate to good yields.A homolytic mechanism, involving oxidation of 1 to the correspo

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