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91133-25-4

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91133-25-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91133-25-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,1,3 and 3 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 91133-25:
(7*9)+(6*1)+(5*1)+(4*3)+(3*3)+(2*2)+(1*5)=104
104 % 10 = 4
So 91133-25-4 is a valid CAS Registry Number.

91133-25-4Downstream Products

91133-25-4Relevant articles and documents

Synthesis and Complexation Properties of Suitcase-Shaped Macrotricyclic and Butterfly-Shaped Macrobicyclic Polyether Ligands

An, Haoyun,Bradshaw, Jerald S.,Krakowiak, Krzysztof E.,Zhu, Chengyue,Dalley, N. Kent,Izatt, Reed M.

, p. 4998 - 5005 (2007/10/02)

Ten suitcase-shaped macrotricyclic polyethers (1-10) containing nitrogen and carbon bridgehead atoms have been synthesized.These new cage compounds were prepared by connecting together two hydroxymethyl-substituted or two secondary amine-containing butterfly-shaped macrobicyclic polyethers by means of linear bifunctional connecting groups.Intermediate bis(hydroxymethyl)-substituted butterfly-shaped macrobicyclic polyether 14 was prepared by treating N,N'-bis(2-hydroxyethyl)ethylenediaamine with 5-methylene-3,7-dioxane-1,9-diyl ditosylate to give bislariat 1,4-diaza-13-crown-4 (11) which was cyclized with 3-chloro-2-(chloromethyl)-1-propene followed by hydroboration.Intermediate bissecondary amine-containing butterfly-shaped macrobicyclic polyethers 18 and 19 were prepared by treating N,N'-bis(2-hydroxyethyl)ethylenediamine with 6-tosyl-3,9-dioxa-6-aza-1,11-undecanediyl ditosylate (33) to give N-tosyl-N',N"-bis(2-Hydroxyethyl)triaza-15-crown-5 (12).Lariat crown ether 12 was cyclized with 33 followed by reduction with LiAlH4 to give 18, or with 4-tosyl-4-aza-1,7-heptanediyl ditosylate (36 to give 19.Some of the suitcase-shaped macrotricycles interacted with various cations.One was selective for Pb(2+) ions and another interacted strongly with Hg(2+).A crystal structure for the 13-NaClO4 complex also is reported.

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