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94111-50-9

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94111-50-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 94111-50-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,1,1 and 1 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 94111-50:
(7*9)+(6*4)+(5*1)+(4*1)+(3*1)+(2*5)+(1*0)=109
109 % 10 = 9
So 94111-50-9 is a valid CAS Registry Number.

94111-50-9Relevant articles and documents

Synthesis and Characterization of Blocked and Ligand-Appended Hemes Derived from Atropisomeric meso-Diphenylporphyrins

Young, Richard,Chang, C. K.

, p. 898 - 909 (2007/10/02)

The synthesis of a series of sterically blocked and imidazole-appended meso-diphenyletioporphyrins is described.These hybrid porphyrins have good solubility and spectroscopic properties of β-substituted porphyrins as well as the orientation specificity of ortho-position-derivatized tetraphenylporphyrins.The effectiveness of the blocking groups is demonstrated by ferric hemin hydroxide formation in the doubly protected trans-5,15-bis-2,8,12,18-tetraethyl-3,7,13,17-tetramethylporphine, characterized by UV-visible, 1H NMR, and IR spectra and cyclic voltammetry.The advantage of the m-benzyl linkage in enforcing imidazole coordination to ferric hemes is demonstrated by 1H NMR studies on various type of imidazole-appended heme complexes.Several potential binucleating systems have also been prepared by incorporating nonheme chelating ligands to the hybrid porphyrins.

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