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640844-34-4

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640844-34-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 640844-34-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,0,8,4 and 4 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 640844-34:
(8*6)+(7*4)+(6*0)+(5*8)+(4*4)+(3*4)+(2*3)+(1*4)=154
154 % 10 = 4
So 640844-34-4 is a valid CAS Registry Number.

640844-34-4Downstream Products

640844-34-4Relevant academic research and scientific papers

Globular Polymer Grafts Require a Critical Size for Efficient Molecular Sieving of Enzyme Substrates

McNelles, Stuart A.,Marando, Victoria M.,Adronov, Alex

supporting information, p. 8448 - 8453 (2019/04/30)

A series of 2,2-bis(hydroxymethyl)propionic acid dendrons of generation 2 through 8 having a strained cyclooctyne at the core and hydroxy groups at the periphery were prepared by a divergent method and used to functionalize azide-decorated α-chymotrypsin.

Synthesis and Self-Assembly of Supramolecular Dendritic "Bow-Ties": Effect of Peripheral Functionality on Association Constants

Gillies, Elizabeth R.,Frechet, Jean M. J.

, p. 46 - 53 (2007/10/03)

Self-assembled polyester dendritic bow-ties with various peripheral groups were prepared, and their association constants were measured by 1H NMR in CDCl3. The two complementary dendrons were prepared by attachment of either a bis(ad

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