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857684-82-3

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857684-82-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 857684-82-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,6,8 and 4 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 857684-82:
(8*8)+(7*5)+(6*7)+(5*6)+(4*8)+(3*4)+(2*8)+(1*2)=233
233 % 10 = 3
So 857684-82-3 is a valid CAS Registry Number.

857684-82-3Downstream Products

857684-82-3Relevant articles and documents

Highly atom-economic one-pot formation of three different C-P bonds: General synthesis of acyclic tertiary phosphine sulfides

Baccolini, Graziano,Boga, Carla,Mazzacurati, Marzia

, p. 4774 - 4777 (2005)

The reaction of benzothiadiphosphole 1 with an equimolar mixture of R 1MgBr and R2MgBr gave intermediate A′, which, after only 4-5 min, was treated with an equimolar amount of R3MgBr, giving the asymmetric phosphine PR1R2R3 in 45% overall yield (75-80% yield when R1 = R2 and 85-90% yield when R1 = R2 = R3) and the byproduct 6 in 90% yield. The treatment of 6 with PCl3 quantitatively regenerates the starting reagent 1. Treatment of the phosphines with elemental sulfur gave the corresponding sulfides.

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