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88454-84-6

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88454-84-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 88454-84-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,8,4,5 and 4 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 88454-84:
(7*8)+(6*8)+(5*4)+(4*5)+(3*4)+(2*8)+(1*4)=176
176 % 10 = 6
So 88454-84-6 is a valid CAS Registry Number.

88454-84-6Downstream Products

88454-84-6Relevant articles and documents

Synthesis of Lipophilic 18-Crown-6 Diacids for the Membrane Transport of Alkaline-Earth Cations

Fyles, Thomas M.,McGavin, Cynthia A.,Whitfield, Dennis M.

, p. 753 - 761 (2007/10/02)

The synthesis of three different types of lipophilic 18-crown-6 diacids is described.A didecyl crown ether 2,3-diacid (1) was prepared as a minor product from a diiodide precursor (12) and threo-11,12-docosanediol by thallous ethoxide cyclization.The major nonpolymeric products resulted from elimination followed by cyclization to give 15-crown-5-derivatives.A crown ether 11,12-diamide 2,3-diacid (4) was prepared by a similar route involving cyclization of a benzyl protected precursor (26) and N,N,N',N'-tetramethyltartaramide (9).Isomeric syn and anti 2,11(12)-diamide 3,12(11)-diacid derivatives 6 and 7 were prepared from the known crown ether bisanhydride 8 and alkylamines.The product mixture was separated by chromatography, and the isomers were identified by comparison of acidity and stability constants for complexation with those of closely related syn/anti crown ether acids.

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