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65604-69-5

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65604-69-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 65604-69-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,6,0 and 4 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 65604-69:
(7*6)+(6*5)+(5*6)+(4*0)+(3*4)+(2*6)+(1*9)=135
135 % 10 = 5
So 65604-69-5 is a valid CAS Registry Number.

65604-69-5Relevant articles and documents

The enhancement of the D-A effect of an asymmetric Schiff base by introducing acetyl groups into diaminomaleonitrile: Synthesis, red fluorescence and crystal structure

Wang, Ke,Su, Hao,Wang, Pengfei,Wang, Wenjie,Li, Hui

, p. 14268 - 14275 (2019)

An asymmetrical salen-type organic ligand was designed and synthesized by a new strategy developed using a precursor Ac-DMN, which is a diaminomaleonitrile (DMN) incorporated with an acetyl group. In this study, two types of asymmetrical ligands, namely Ac-DMN-salicylaldehyde (L0) and Ac-DMN-4-N,N-diethyl-salicylaldehyde (L1), and their Zn(ii) coordination complexes were studied. With the electron-pushing substituent, L1 showed interesting photoluminescence behaviour distinct from that of L0. In a THF solution, the maximum fluorescence emission of L1 red-shifted to 90 nm compared with that of L0. Furthermore, in a THF-H2O solution, L1 exhibited aggregation-induced emission (AIE), but L0 exhibited aggregation-caused quenching (ACQ). Upon coordination with Zn(ii), the maximum emission wavelengths in THF for both the ligands were red-shifted to 100 nm and 105 nm, respectively. The crystalline solid-state photoluminescence properties were studied based on the single-crystal structural analysis.

Novel 2H-1,2,3-Triazole sodium complex from N-[2-amino-1,2-dicyanovinyl]alkanamides

AL-Azmi, Amal,George, Paulson,El-Dusouqui, Osman M.E.

, p. 2183 - 2201 (2008/09/17)

Diazotization at 0 °C of N-[2-amino-1,2-dicyanovinyl]ethanamide 2a or propanamide 2b prepared from diaminomaleonitrile (DAMN) 1 using aqueous acetic acid and NaNO2 solution furnished sodium complex 3. The X-ray structure of the complex 3 showed that it is a 1:1 mixture of the neutral 2H-triazole heterocycle 4ii and its anion deprotonated at the central (N) atom of the ring, together with a sodium counter ion and two coordinated water molecules. However, when the diazotization reaction was carried out in the presence of aqueous HCl, the product was 5-cyano-2H-[1,2,3]triazole-4-carboxylic acid amide monohydrate 4ii. Diazotization of DAMN 1 using aqueous HCl furnished 1H-1,2,3-triazole-4,5-dicarbonitrile 5, whereas with acetic acid there was no reaction, and hence no route analogous to that leading to complex 3. The structure of both complex 3 and the triazole monohydrate 4ii were solved using X-ray crystallography, and the compounds under study were fully characterized using spectroscopic techniques.

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