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52252-58-1

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52252-58-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52252-58-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,2,5 and 2 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 52252-58:
(7*5)+(6*2)+(5*2)+(4*5)+(3*2)+(2*5)+(1*8)=101
101 % 10 = 1
So 52252-58-1 is a valid CAS Registry Number.

52252-58-1Relevant articles and documents

All-natural carbon source raspberry ketone preparation method

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, (2019/02/04)

The invention discloses an all-natural carbon source raspberry ketone preparation method, which comprises: carrying out a demethylation reaction on naturally-derived p-anisaldehyde as a raw material to prepare p-hydroxybenzaldehyde, carrying out a Knoevenagel condensation reaction on the p-hydroxybenzaldehyde and ethyl acetoacetate derived from biomass to obtain ethyl (E/Z)-2-acetyl-3-(4-hydroxyphenyl)acrylate, and carrying out hydrogenation, hydrolysis and decarboxylation to prepare the raspberry ketone. According to the present invention, the method can achieve the preparation of the all-natural carbon source raspberry ketone, and has advantages of simple route, easy operation, environmental friendliness, high yield and the like.

Palladium-catalyzed dehydrogenative β′-arylation of β-keto esters under aerobic conditions: Interplay of metal and Bronsted acids

Yip, Kai-Tai,Nimje, Roshan Y.,Leskinen, Mikko V.,Pihko, Petri M.

supporting information, p. 12590 - 12594 (2012/11/13)

The Bronsted aids: The first dehydrogenative arylation of β-keto esters with arenes under ambient aerobic conditions is described (see scheme). Under a PdII/Bronsted acid co-catalytic system, regioselective arylations with alkoxylated arenes an

Beta-ketoester compounds

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Page column 12, (2010/11/30)

The beta-ketoesters of formula I are useful as precursors for organoleptic compounds, especially for flavors, fragrances and masking agents and antimicrobial compounds.

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