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125943-44-4

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125943-44-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 125943-44-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,5,9,4 and 3 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 125943-44:
(8*1)+(7*2)+(6*5)+(5*9)+(4*4)+(3*3)+(2*4)+(1*4)=134
134 % 10 = 4
So 125943-44-4 is a valid CAS Registry Number.

125943-44-4Relevant articles and documents

Synthesis and properties of sterically congested cyclopentadienes and their transition metal complexes

Clark, T. Jeffrey,Killian, Christopher M.,Luthra, Sanjay,Nile, Terence A.

, p. 247 - 258 (2007/10/02)

The synthesis of 1,3-dialkyl substituted cyclopentadienes, C5H4RR', Cp'H (Va-g) (where R and R' are tert-butyl, iso-propyl, neo-pentyl, cyclohexyl, or 1-methylcyclohexyl) is reported.These are synthesized by the nucleophilic addition of methyl or hydride anions to the corresponding 2-alkyl-6,6-dialkylfulvenes (IIIa-f) followed by hydrolysis.These substituted 1,3-cyclopentadienes have been converted to organometallic derivatives such as 2, (M=Mo or W) and Cp'2Fe.The spectroscopic and electrochemical properties of selected complexes have been investigated to probe the steric and electronic properties of the substituted cyclopentadienyl ligands.

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