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99893-72-8

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99893-72-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99893-72-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,9 and 3 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 99893-72:
(7*9)+(6*9)+(5*8)+(4*9)+(3*3)+(2*7)+(1*2)=218
218 % 10 = 8
So 99893-72-8 is a valid CAS Registry Number.

99893-72-8Relevant articles and documents

Silver-catalyzed radical phosphonofluorination of unactivated alkenes

Zhang, Chengwei,Li, Zhaodong,Zhu, Lin,Yu, Limei,Wang, Zhentao,Li, Chaozhong

supporting information, p. 14082 - 14085 (2013/10/21)

We report herein a mild and catalytic phosphonofluorination of unactivated alkenes. With catalysis by AgNO3, the condensation of various unactivated alkenes with diethyl phosphite and Selectfluor reagent in CH 2Cl2/H2O/HOAc at 40 C led to the efficient synthesis of β-fluorinated alkylphosphonates with good stereoselectivity and wide functional group compatibility. A mechanism involving silver-catalyzed oxidative generation of phosphonyl radicals and silver-assisted fluorine atom transfer is proposed.

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