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Benzaldehyde, 6-hydroxy-2-iodo-3-nitro- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

139277-45-5

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139277-45-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139277-45-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,7 and 7 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 139277-45:
(8*1)+(7*3)+(6*9)+(5*2)+(4*7)+(3*7)+(2*4)+(1*5)=155
155 % 10 = 5
So 139277-45-5 is a valid CAS Registry Number.

139277-45-5Relevant academic research and scientific papers

Transmission of Recognition Information to Other Sites in a Molecule: Proximity of Two Remote Sites in the Spirobenzopyran by Recognition of Alkali-Metal Cations

Inouye, Masahiko,Ueno, Masaru,Kitao, Teijiro

, p. 1639 - 1641 (1992)

A new spirobenzopyran was synthesized, in which recognition of alkali-metal cations induced a structural change in the molecule accompanying coloration that resulted in a proximity of two remote sites in the molecule.

New crown spirobenzopyrans as light- and ion-responsive dual-mode signal transducers

Inouye, Masahiko,Akamatsu, Kaori,Nakazumi, Hiroyuki

, p. 9160 - 9165 (2007/10/03)

A new class of crown spirobenzopyrans were designed and synthesized. The crown spirobenzopyrans showed thermally irreversible photochromism only in the presence of alkali-metal cations accompanying cation-selective coloring efficiency. Thus, the new crown

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