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5-butyldibenzophosphole is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

21955-57-7

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21955-57-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21955-57-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,5 and 5 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 21955-57:
(7*2)+(6*1)+(5*9)+(4*5)+(3*5)+(2*5)+(1*7)=117
117 % 10 = 7
So 21955-57-7 is a valid CAS Registry Number.

21955-57-7Downstream Products

21955-57-7Relevant academic research and scientific papers

Selective C-P(O) Bond Cleavage of Organophosphine Oxides by Sodium

Zhang, Jian-Qiu,Ikawa, Eiichi,Fujino, Hiroyoshi,Naganawa, Yuki,Nakajima, Yumiko,Han, Li-Biao

supporting information, p. 14166 - 14173 (2020/11/13)

Sodium exhibits better efficacy and selectivity than Li and K for converting Ph3P(O) to Ph2P(OM). The destiny of PhNa co-generated is disclosed. A series of alkyl halides R4X and aryl halides ArX all react with Ph2P(ONa) to produce the corresponding phosphine oxides in good to excellent yields.

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