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223449-74-9

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223449-74-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223449-74-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,4,4 and 9 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 223449-74:
(8*2)+(7*2)+(6*3)+(5*4)+(4*4)+(3*9)+(2*7)+(1*4)=129
129 % 10 = 9
So 223449-74-9 is a valid CAS Registry Number.

223449-74-9Downstream Products

223449-74-9Relevant articles and documents

Synthesis of 3,5-bis(phosphonomethyl)benzoic acid and its application as a metal oxide surface bivalent anchor

Nakhle, Bassam M.,Trammell, Scott A.,Sigel, Keith M.,Meyer, Thomas J.,Erickson, Bruce W.

, p. 2835 - 2846 (2007/10/03)

A protected form of 3,5-bis(phosphonomethyl)benzoic acid (Bpb-OH), a metal oxide surface bivalent anchor, has been synthesized, coupled to an amine functionality, deprotected, and shown to bind to metal oxide surfaces. The protected anchor, 3,5-bis(dimethoxyphosphinylmethyl)benzoic acid (Me4Bpb-OH) was synthesized in 23% yield over four steps, coupled to a proline-chromophore, deprotected with a solution of iodotrimethylsilane (TMSI) in acetonitrile and adsorbed to Tin(IV)-doped indium oxide and nanocrystalline TiO2 electrodes at surface coverages of 1.5 x 10-10 mol cm-2 and 4.9 x 10-11 mol cm-2, respectively. Finally, Me4Bpb-OH was converted to an amino derivative by attaching a diamino butane linker.

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