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156216-70-5

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156216-70-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156216-70-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,2,1 and 6 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 156216-70:
(8*1)+(7*5)+(6*6)+(5*2)+(4*1)+(3*6)+(2*7)+(1*0)=125
125 % 10 = 5
So 156216-70-5 is a valid CAS Registry Number.

156216-70-5Downstream Products

156216-70-5Relevant articles and documents

New method of synthesis of 1,5-benzodiazepin-2-ones from 4-hydroxycoumarin

Hamdi,Grech,Sakellariou,Speziale

, p. 509 - 511 (1994)

A new method of synthesis of 1,5-benzodiazepine-2-ones, from 4-hydroxycoumarin and substituted 1,2-phenylenediamines by heating in xylene or acetic acid-ethanol, is reported.

Solution and solid-state fluorescence of 2-(2′-hydroxyphenyl)-1,5-benzodiazepin-2-one (HBD) borate complexes

Mtiraoui, Hasan,Gharbi, Rafik,Msaddek, Moncef,Bretonnière, Yann,Andraud, Chantal,Renard, Pierre-Yves,Sabot, Cyrille

, p. 86352 - 86360 (2016/10/19)

A new family of fluorescent 1,5-benzodiazepin-2-one (HBD) borate complexes was prepared in good yields, and fully characterized by means of MS, NMR and IR spectroscopy, as well as X-ray crystal structure analysis for compound 13. Unlike their uncomplexed congeners, most of these cyclic boranils were emissive both in solution and the solid state, with maxima in the range of 426-596 nm. A systematic study of substituent effects revealed that the presence of a halogen atom specifically at position 8 of the fused-aromatic ring system led to an increase in fluorescence intensity in solution while electron rich substituents tended to extinguish the photoluminescence. Finally, a proof-of-concept study highlighted that the amide moiety of the benzodiazepinone framework could be functionalized with a chemical handle useful for subsequent specific modifications.

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