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209627-02-1

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209627-02-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 209627-02-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,6,2 and 7 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 209627-02:
(8*2)+(7*0)+(6*9)+(5*6)+(4*2)+(3*7)+(2*0)+(1*2)=131
131 % 10 = 1
So 209627-02-1 is a valid CAS Registry Number.

209627-02-1Relevant articles and documents

Controlled monohalogenation of phosphonates: A new route to pure α- monohalogenated diethyl benzylphosphonates

Iorga, Bogdan,Eymery, Frederic,Savignac, Philippe

, p. 2671 - 2686 (2007/10/03)

Starting from diethyl benzylphosphonates, a wide variety of diethyl α- monofluoro, chloro, bromo and iodobenzylphosphonates have been obtained in pure form by a one-pot procedure. This high yielding method implies the intermediate protection of the benzyl anion with TMSCI followed by halogenation with an electrophilic halogenating reagent.

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