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165904-07-4

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165904-07-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 165904-07-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,5,9,0 and 4 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 165904-07:
(8*1)+(7*6)+(6*5)+(5*9)+(4*0)+(3*4)+(2*0)+(1*7)=144
144 % 10 = 4
So 165904-07-4 is a valid CAS Registry Number.

165904-07-4Downstream Products

165904-07-4Relevant articles and documents

Tetramesityldibismuthane, Bis(dimesitylbismuth)- and Bis(dimethylbismuth)chalcogenides

Breunig, Hans Joachim,Ebert, Klaus Heinz,Schulz, Reinhold Ernst,Wieber, Markus,Sauer, Ingbert

, p. 735 - 744 (2007/10/02)

Reduction of Mes2BiBr with Na in liquid NH3 or with Cp2Co in THF or C6D6 gives Mes4Bi2 (1) as a red solid that reversibly becomes pink on cooling with liquid nitrogen.Oxidation of 1 in air, or reaction of Mes2BiBr with NaOH, gives (Mes2Bi)2O (2). (Mes2Bi)2S (3) and (Mes2Bi)2Se (4) are formed by reaction of Mes2BiBr with Na2S in water or with Na2Se in liquid NH3, respectively. (Mes2Bi)2Te (5) is obtained by reaction of 1 with Te or by reaction of Mes2BiBr with Na2Te.Reactions of Me4Bi2 with Se or Te produce (Me2Bi)2Se (6) and (Me2Bi)2Te (7).With equimolar amounts of p-benzoquinone tetramethyldibismuthane yields 1,4-C6H4(OBiMe2)2 (8). 1H NMR data and mass spectra of 1-8, UV-VIS data of 1-4, and the crystal structures of 2*0.5C2H5OH, 3 and 4 are reported. - Keywords: Tetramesityldibismuthane, Bis(diorganylbismuth)chalcogenides, 1,4-Bis(dimethylbismuthoxo)benzene

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