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131944-73-5

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131944-73-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131944-73-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,4 and 4 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 131944-73:
(8*1)+(7*3)+(6*1)+(5*9)+(4*4)+(3*4)+(2*7)+(1*3)=125
125 % 10 = 5
So 131944-73-5 is a valid CAS Registry Number.

131944-73-5Downstream Products

131944-73-5Relevant articles and documents

Efficient Synthesis of Substituted 2-Diethylphosphonylbuta-1,3-dienes

Hashim Al-Badri,About-Jaudet, Elie,Collignon, Noeel

, p. 1072 - 1078 (2007/10/02)

Numerous new substituted 2-diethylphosphonylbuta-1,3-dienes 5 bearing various aryl or alkyl substituents at the 1- and 4-positions were conveniently prepared from 2-diethylphosphonyl homoallylic alcohols 3, by stereospecific dehydration with dicyclohexylc

STUDIES ON ORGANOPHOSPHORUS COMPOUNDS XLIV. STRUCTURAL EFFECT OF ELECTROPHILES ON THE REGIOSELECTIVITY OF CARBANION DERIVED FROM DIALKYL ALLYLPHOPHONATES

Yao, Chengye Yuan Jiachang,Li, Shusen

, p. 21 - 27 (2007/10/02)

For the evaluation of the structural effect of electrophiles on the regioselectivity of ambident anions, the reaction of phosphoryl allylic carbanion with p-substituted benzaldehydes was investigated.

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