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72170-79-7

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72170-79-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72170-79-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,1,7 and 0 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 72170-79:
(7*7)+(6*2)+(5*1)+(4*7)+(3*0)+(2*7)+(1*9)=117
117 % 10 = 7
So 72170-79-7 is a valid CAS Registry Number.

72170-79-7Downstream Products

72170-79-7Relevant articles and documents

New approaches to the synthesis of diphosphine dioxides and hypophosphoric acid esters

Nycz, Jacek E.,Musiol, Robert

, p. 310 - 316 (2007/10/03)

An union >P-O- has been applied as an efficient synthetic precursor of four coordination compounds of the R2P(O)-(O)PR 2 type, namely diphosphine dioxides (R = alkyl, aryl) as well as hypophosphoric acid esters (R = alkoxy, aryloxy), in a one-pot reaction. Furthermore, there were elaborated some mechanistic aspects of the origin of the >P(O)-O-(O)PP-O- and >P(O)X (X= Cl, Br) electrophiles. Attention is focused on the synthesis of the >P(O)-(O)P compounds.

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