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925900-28-3

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925900-28-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 925900-28-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,2,5,9,0 and 0 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 925900-28:
(8*9)+(7*2)+(6*5)+(5*9)+(4*0)+(3*0)+(2*2)+(1*8)=173
173 % 10 = 3
So 925900-28-3 is a valid CAS Registry Number.

925900-28-3Relevant articles and documents

Straightforward Syntheses That Avoid Scrambling of meso-Substituted [28]Hexaphyrins

Plamont, Rémi,Balaban, Teodor Silviu,Canard, Gabriel

, p. 593 - 599 (2017)

A two-step synthesis of meso-substituted [28]hexaphyrins in an aqueous medium was developed and optimized, and scrambling processes are avoided despite the use of a high acid concentration. The efficiency of this procedure relies on the nature of the star

Synthesis of meso-substituted corroles and porphyrins using iodine as a catalyst

Chauhan, Shive M S,Dandia, Anshu

, (2020/10/02)

Abstract: Different types of corroles and porphyrins are synthesized from substituted aldehydes and pyrrole. The current synthetic method involves iodine as catalyst and proceeds at room temperature itself. By varying the amounts of reactants (i.e., pyrrole and aldehydes), the corrole and porphyrins were obtained in good to excellent yields. These products were characterized by 1H-NMR, UV-visible, and HRMS techniques. The reaction approach utilizes the readily available pyrrole and substituted aldehydes as starting materials and makes this reaction highly attractive in diversity-oriented synthesis. Graphic abstract: Different types of porphyrins and corroles are synthesized from substituted aldehydes and pyrrole using iodine as a catalyst and the reaction proceeds at room temperature itself. By varying the amount of reactants (i.e. pyrrole and aldehydes), the porphyrins and corroles are obtained in good to excellent yields.[Figure not available: see fulltext.]

Control of oligomerization and oxidation steps in the synthesis of tris(pentafluorophenyl)corrole

Blumenfeld, Carl,Fisher, Katherine J.,Henling, Lawrence M.,Grubbs, Robert H.,Gray, Harry B.,Virgil, Scott C.

supporting information, p. 3022 - 3025 (2015/05/13)

The mechanistic features of oligomerization and oxidative cyclization steps in the synthesis of tris(pentafluorophenyl)corrole (1) have been thoroughly studied. Separation of the intermediates by preparative HPLC and analysis by NMR spectroscopy and high

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