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77920-58-2

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77920-58-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77920-58-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,2 and 0 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 77920-58:
(7*7)+(6*7)+(5*9)+(4*2)+(3*0)+(2*5)+(1*8)=162
162 % 10 = 2
So 77920-58-2 is a valid CAS Registry Number.

77920-58-2Upstream product

77920-58-2Downstream Products

77920-58-2Relevant articles and documents

Metal-assisted Reactions. Part 17. Ring-opening and Dimerization of Cyclic Ethers by Titanium Halides

Delaney, Paul A.,Johnstone, Robert A. W.,Entwistle, Ian D.

, p. 1855 - 1860 (2007/10/02)

Reaction of TiCl4 or TiBr4 with a variety of cyclic ethers gives, predominantly, products resulting from simple ring-opening or from ring-opening with simultaneous condensation to dimeric species.The variations in yields of these two kinds of products might be correlated qualitatively with an initial formation of the complex TiX4*2E (X = Cl or Br; E = cyclic ether) in which the ethers were held in a cis or trans relationship.Although such a correlation might suggest that TiCl4 but not TiBr4 exerts a template effect on the condensation, stereochemical considerations of the reaction products indicate otherwise.TiCl3 and VCl3 do not give similar results and TiF4 gives no reaction.

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