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71725-42-3

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71725-42-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71725-42-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,7,2 and 5 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 71725-42:
(7*7)+(6*1)+(5*7)+(4*2)+(3*5)+(2*4)+(1*2)=123
123 % 10 = 3
So 71725-42-3 is a valid CAS Registry Number.

71725-42-3Relevant articles and documents

A new regioselective synthesis of 3-substituted furan-2(5H)-ones by palladium-catalysed reductive carbonylation of alk-1-ynes

Gabriele, Bartolo,Salerno, Giuseppe,Costa, Mirco,Chiusoli, Gian Paolo

, p. 989 - 990 (2007/10/03)

3-Alkyl- or 3-aryl-substituted furan-2(5H)-ones are obtained directly in fair yields by reductive carbonylation of alk-1-ynes in the presence of catalytic amounts of palladium iodide in conjunction with potassium iodide (10 eq.) and water (200 eq.). Simultaneous oxidation of CO to CO2 accounts for the stoichiometry of the process. Reactions are carried out in dioxane under mild conditions (80 °C and 10 atm of carbon monoxide).

Nitrodienic-like Reactivity of 2-Nitrofuran with Organometallic Reagents: One-step Synthesis of Alkylfuranones

Pecunioso, Angelo,Galoppini, Elena,Menicagli, Rita

, p. 7497 - 7508 (2007/10/02)

2-Nitrofuran reacts with Grignard, alkyllithium, dialkylcadmium and heterocuprate reagents affording mixtures of 5-alkyl- and 3-alkyl-2-furanones.

ALKYLFURANONES FROM 2-NITROFURAN: A PROMISING SYNTHETIC APPROACH

Menicagli, Rita,Pecunioso, Angelo,Galoppini, Elena

, p. 141 - 142 (2007/10/02)

Mixtures of 5- and 3-alkyl-2-furanones are obtained from 2-nitrofuran and Grignard reagents.

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