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723757-89-9

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723757-89-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 723757-89-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,3,7,5 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 723757-89:
(8*7)+(7*2)+(6*3)+(5*7)+(4*5)+(3*7)+(2*8)+(1*9)=189
189 % 10 = 9
So 723757-89-9 is a valid CAS Registry Number.

723757-89-9Relevant articles and documents

Rhodium-Catalyzed Carbonylative Coupling of Alkyl Halides with Phenols under Low CO Pressure

Ai, Han-Jun,Li, Chong-Liang,Wang, Hai,Wu, Xiao-Feng

, p. 5147 - 5152 (2020/05/27)

A rhodium-catalyzed carbonylative transformation of alkyl halides under low pressure of CO has been developed. This robust catalyst system allows using phenols as the carbonylative coupling partner and, meanwhile, exhibits high functional group tolerance and good chemoselectivity. Substrates even with a large steric hindrance group or multiple reaction sites can be selectively converted into the desired products in good to excellent yields. A gram-scale experiment was performed and delivered an almost quantitative amount of the product. Control experiments were performed as well, and a possible reaction mechanism is proposed.

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