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309956-59-0

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309956-59-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 309956-59-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,9,9,5 and 6 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 309956-59:
(8*3)+(7*0)+(6*9)+(5*9)+(4*5)+(3*6)+(2*5)+(1*9)=180
180 % 10 = 0
So 309956-59-0 is a valid CAS Registry Number.

309956-59-0Downstream Products

309956-59-0Relevant articles and documents

Thermal oxidative degradation of the functionally substituted 2,2′-dipyrrolylmethenes hydrobromides and difluoroborates

Yutanova,Berezin,Semeikin,Antina,Guseva,V'Yugin

, p. 545 - 551 (2013/08/23)

Thermal oxidative decomposition of samples of crystalline hydrobromide and borofluoride complexes (BODIPY) of a series of 2,2′-dipyrrolylmethenes (HL) was studied by means of thermogravimetry in an atmosphere of air oxygen. An increase in the degree and symmetry of substitution, aromaticity, and the length of the substituents in 4,4′-positions of the pyrrole ligand rings increases stability of the BODIPY-dyes to oxidative degradation. A comparative analysis of the influence of structural factors on the thermolability of hydrobromdes (HL·HBr), d-metal (ML2) and boron(III) complexes with 2,2′-dipyrrolylmethenes was carried out.

Synthesis and physicochemical properties of hydrobromides of alkyl-substituted dipyrrolylmethenes

Berezin,Semeikin,Antina,Pashanova,Lehedeva,Bukushina

, p. 1949 - 1955 (2007/10/03)

Hydrobromides of [(alkylpyrrol-2(1H)-ylidenio)methyl]pyrroles (α,α-dipyrrolylmethenes) and of their α,β and β,β isomers were prepared, and their resistance to oxidative thermal degradation was studied. The solvation properties of these compounds in various organic solvents were examined spectrophotometrically and calorimetrically.

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