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7677-11-4

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7677-11-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7677-11-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,7 and 7 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 7677-11:
(6*7)+(5*6)+(4*7)+(3*7)+(2*1)+(1*1)=124
124 % 10 = 4
So 7677-11-4 is a valid CAS Registry Number.

7677-11-4Downstream Products

7677-11-4Relevant articles and documents

Preparation, reactions, and spectroscopic investigation of the 1,1,3,3-tetramethylimidazolidinium and 1,1,4,4-tetramethylpiperazonium dications

Creighton, J. Alain,Taylor, Michael J.

, p. 2526 - 2528 (2007/10/02)

The title dictations are prepared in a single step by the reaction of N,N,N',N'-tetramethyl-1,2-diaminoethane (tmen) with the halogenoalkanes CH2X2 (X = Cl, Br, or I) or CH2XCH2X (X = Cl or Br), respectively.These bulky dications are useful for the precipitation of complex ions from solution, and show selectivity for doubly-charged anions.Tmen also reacts with CBr4 to yield a dibromo-imidazolidinium heterocyclic dication, whereas reaction with CHBr2CHBr2 produces the dihydrobromide of tmen.Vibration and nmr spectra are reported, and the protons of the CH2 group between the two quaternary nitrogen atoms of the tetramethylimidazolidinium dication are shown from the nmr data to possess acidic character.

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