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65613-21-0

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65613-21-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 65613-21-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,6,1 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 65613-21:
(7*6)+(6*5)+(5*6)+(4*1)+(3*3)+(2*2)+(1*1)=120
120 % 10 = 0
So 65613-21-0 is a valid CAS Registry Number.

65613-21-0Downstream Products

65613-21-0Relevant articles and documents

Synthesis and spectral properties of new 3,3'-bis(dipyrrolylmethene) with acetylene spacer

Antina,Guseva,Loginova,Semeikin,V'Yugin

experimental part, p. 2374 - 2381 (2011/04/14)

Bis(2,4,7,9-tetramethyl-8-ethyldipyrrolylmethen-3-yl)acetylene dihydrobromide (H2L·2HBr), new bis(dipyrrolylmethene), in whose molecule dipyrrolylmethene domains were connected through 3,3'-carbon atoms of internal pyrrole nuclei by acetylene spacer, were synthesized by original procedure. The compound was characterized by element analysis, IR, 1H NMR, and electronic spectroscopy. The comparative analysis of spectral properties shows the reduction of the basicity of H2L ligand in comparison with the structural analogs, which contain internal methylene spacer. The quantum-chemical simulation showed that the rigid acetylene spacer gives linear structure to the H2L molecule in contrast to the spiral-shaped geometry of structural analogs with-CH2-spacer. Pleiades Publishing, Ltd., 2010.

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