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175844-48-1

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175844-48-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 175844-48-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,5,8,4 and 4 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 175844-48:
(8*1)+(7*7)+(6*5)+(5*8)+(4*4)+(3*4)+(2*4)+(1*8)=171
171 % 10 = 1
So 175844-48-1 is a valid CAS Registry Number.

175844-48-1Downstream Products

175844-48-1Relevant articles and documents

Synthesis of linear oligo(catechol) ligands for the metal directed self-assembling of helicates

Albrecht, Markus

, p. 230 - 236 (2007/10/03)

The synthesis of the oligo(catechol) systems 1-4 with different substituents, length of the connecting spacer, and number of catechol units is achieved by the use of various coupling reactions (e.g. Wurtz, Glaser-Eglinton, Stephens-Castro). In order to do this methods of preparing the building blocks, 2,3-dimethoxybenzyl bromides 5, 2,3-dimethoxyphenylacetylene (17), or 1,4-dibromo-2,3-dimethoxybenzene (23) have been developed starting with simple catechol (benzene-1,2-diol) derivatives.

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