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3023-57-2

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3023-57-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3023-57-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,0,2 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 3023-57:
(6*3)+(5*0)+(4*2)+(3*3)+(2*5)+(1*7)=52
52 % 10 = 2
So 3023-57-2 is a valid CAS Registry Number.

3023-57-2Downstream Products

3023-57-2Relevant articles and documents

DTBB-Catalysed dilithiation of styrene and its methyl-derivatives: Introduction of two electrophilic reagents

Yus, Miguel,Martínez, Pedro,Guijarro, David

, p. 10119 - 10124 (2001)

The reaction of styrene and some methyl-substituted styrenes 1 with lithium and a catalytic amount of 4,4′-di-tert-butylbiphenyl (DTBB) in the presence of several electrophiles [Me3SiCl, Me2CO, Et2CO, (CH2)5CO, Pr2CO], in THF, at temperatures ranging from -78 to 0°C, gave, after hydrolysis, products 2 resulting from addition of lithium to the olefinic double bond and successive trapping with the electrophilic reagent. When a carbonyl compound was used as electrophile, mixtures of the monoaddition-reduction compounds 3 and 4 were obtained as by-products, which could be easily separated from the diaddition products 2.

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