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119557-91-4

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119557-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 119557-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,5,5 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 119557-91:
(8*1)+(7*1)+(6*9)+(5*5)+(4*5)+(3*7)+(2*9)+(1*1)=154
154 % 10 = 4
So 119557-91-4 is a valid CAS Registry Number.

119557-91-4Upstream product

119557-91-4Downstream Products

119557-91-4Relevant articles and documents

Amphiphilic homopolymer as a reaction medium in water: Product selectivity within polymeric nanopockets

Arumugam, Selvanathan,Vutukuri, Dharma Rao,Thayumanavan,Ramamurthy

, p. 13200 - 13206 (2005)

A styrene-based water-soluble polymer has been explored for its use as a host for lipophilic substrates in aqueous medium. Unimolecular reactions, namely, photo-Fries rearrangement of naphthyl esters, α-cleavage reaction of 1-phenyl-3-p-tolyl-propan-2-one, and Norrish type I and type II reactions of benzoin alkyl ethers were examined. We find that the hydrophobic domains generated by the polymer not only restrict the mobility of the radicals but also modestly incarcerate the substrate, intermediates, and products during the time scale of the reactions. Comparative studies of the same photoreactions in micelles formed from small molecule surfactants and an amphiphilic diblock copolymer demonstrate that the styrene-based water-soluble polymer aggregates in aqueous medium offer better selectivity.

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