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431039-52-0

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431039-52-0 Usage

General Description

4-Bromo-4',4''-dimethoxytrityl alcohol is a chemical compound commonly used in organic synthesis and nucleoside chemistry. It is a derivative of trityl alcohol, a versatile protecting group in organic chemistry. 4-BROMO-4',4''-DIMETHOXYTRITYL ALCOHOL is used as a reagent for the protection of hydroxyl groups in nucleosides, allowing for selective manipulation of their reactivity. Its bromo and dimethoxy substituents make it particularly useful for this purpose, as they confer specific reactivity and stability to the protected nucleosides. Additionally, 4-Bromo-4',4''-dimethoxytrityl alcohol can also be utilized in the synthesis of other organic compounds, such as peptides and oligonucleotides, making it a valuable tool in chemical research and development.

Check Digit Verification of cas no

The CAS Registry Mumber 431039-52-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,1,0,3 and 9 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 431039-52:
(8*4)+(7*3)+(6*1)+(5*0)+(4*3)+(3*9)+(2*5)+(1*2)=110
110 % 10 = 0
So 431039-52-0 is a valid CAS Registry Number.

431039-52-0Relevant articles and documents

A Cholesterol Containing pH-Sensitive Bistable [2]Rotaxane

Berg, Martin,Nozinovic, Senada,Engeser, Marianne,Lützen, Arne

, p. 5966 - 5978 (2015/09/22)

A non-symmetrical pH-sensitive bistable [2]rotaxane that bears a cholesterol unit and a tetraphenylmethane group as stopper groups was designed and synthesized in 18 steps. The successful formation of the rotaxane was proven by NMR spectroscopy and MS/MS. Besides a permanent cationic alkylated triazolium unit, the axle contains a secondary amine that can act as a second pH-sensitive binding site for a crown ether. Depending on the protonation state of this amine function, the crown ether reversibly changes its position by moving between the two binding sites along the axle, as revealed by NMR spectroscopy. A pH-sensitive bistable [2]rotaxane was synthesized and characterized by NMR spectroscopy and MS/MS. Besides an alkylated triazolium ion, the axle contains a secondary amine that acts as a second pH-sensitive binding site for a crown ether. Depending on the protonation state of this amine function, the crown ether reversibly changes its position by moving between two binding sites on the axles.

Nanostructured columnar and cubic liquid-crystalline assemblies consisting of unconventional rigid mesogens based on triphenylmethanes

Hatano, Tsukasa,Kato, Takashi

, p. 8368 - 8380 (2008/12/21)

Liquid-crystalline (LC) molecules of unconventional shapes that form columnar and micellar cubic structures have been synthesized using triarylmethyl moieties as building blocks. The molecules have bowl- and dumbbell-shape. Despite the rigidity and bulkiness of the triarylmethyl moieties, the molecules form columnar and micellar cubic LC phases. The bowl-shaped molecules containing one triarylmethyl moiety show LC phases. The LC temperature ranges of the dumbbell-shaped molecules containing two triarylmethyl moieties connected by rigid rods are wider than those of bowl-shaped molecules containing one triarylmethyl moiety. The UV-vis spectroscopy of the dumbbell-shaped molecules having a terphenyl moiety reveals that the terphenyl moieties aggregate in the mesophase.

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