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643013-46-1

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643013-46-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 643013-46-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,3,0,1 and 3 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 643013-46:
(8*6)+(7*4)+(6*3)+(5*0)+(4*1)+(3*3)+(2*4)+(1*6)=121
121 % 10 = 1
So 643013-46-1 is a valid CAS Registry Number.

643013-46-1Downstream Products

643013-46-1Relevant articles and documents

First synthesis of S,S-dialkyl difluorophosphonodithioates and difluorophosphonotrithioates

Lopin, Chrystel,Gouhier, Géraldine,Piettre, Serge R.

, p. 8837 - 8840 (2003)

Several dialkyl difluoromethylphosphonodithioates and difluoromethylphosphonotrithioates have been prepared from difluoromethylphosphonyl dichloride and two equivalents of alkanethiols under basic conditions. Treatment of these species with LDA at low temperatures mainly resulted in decomposition, and to the low-yield isolation of difluorophosphinates or phosphine oxides, thus reflecting the lability of the P-S bond. The desired difluorophosphonodithioates and difluorophosphonotrithioates can be efficiently prepared by reversing the sequence of reactions.

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