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189497-34-5

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189497-34-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 189497-34-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,4,9 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 189497-34:
(8*1)+(7*8)+(6*9)+(5*4)+(4*9)+(3*7)+(2*3)+(1*4)=205
205 % 10 = 5
So 189497-34-5 is a valid CAS Registry Number.

189497-34-5Downstream Products

189497-34-5Relevant articles and documents

Novel Iron Sequestering Agents: Synthesis and Iron-Chelating Properties of Hexadentate Ligands Composed of 1-Hydroxy-2(1H)-pyrimidinone, ω-Amino Carboxylic Acid, and Tris(2-aminoethyl)amine

Ohkanda, Junko,Kamitani, Jun,Tokumitsu, Takeshi,Hida, Yoko,Konakahara, Takeo,Katoh, Akira

, p. 3618 - 3624 (2007/10/03)

Novel heterocyclic hexadentate ligands (3HOPYn: n = 5-7), in which three units of 1-hydroxy-2(1H)-pyrimidinone are linked to tris(2-aminoethyl)amine through an amide bond by an alkyl chain, were synthesized, and their iron-chelating properties were investigated. The stability of their iron complexes (25 to 27 in log K) was significantly larger than that of pyrazinone-containing ligands by virtue of higher pKa values. On kinetic evaluation of iron removal from human transferrin, 3HOPY5 showed remarkable efficiency over five times as much as commercially available desferrioxamine B. The conformational analysis of the corresponding Ga(III) complex of Fe(opy5) by 1H NMR and by MM and MD calculations are also discussed.

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