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918655-75-1

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918655-75-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 918655-75-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,8,6,5 and 5 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 918655-75:
(8*9)+(7*1)+(6*8)+(5*6)+(4*5)+(3*5)+(2*7)+(1*5)=211
211 % 10 = 1
So 918655-75-1 is a valid CAS Registry Number.

918655-75-1Relevant articles and documents

Synthesis of olefinic crown diamides and their conversion into pyrazolino macrocycles: Promising photoluminescent crown compounds

Malhas, Rana N.,Ibrahim, Yehia A.

, p. 3261 - 3269 (2008/09/17)

Macrocyclic crown diamides with 16- or 24-membered rings containing E- and Z-olefinic double bonds were synthesized either by bisalkylation or by ring-closing metathesis (RCM) techniques. The two methods were evaluated and compared with regard to yield and to product stereochemistry. Isomerization of some Z-olefinic macrocycles to their corresponding E-isomers was achieved using Grubbs' catalyst second generation. Some of the required starting dials, diols and bishalo compounds were prepared by different routes including cross-metathesis (CM). The latter was compared with other investigated methods. Some of the olefinic macrocycles were subjected to cycloaddition reactions with diphenylnitrileimine to give the corresponding pyrazolino macrocycles. The latter showed interesting emission spectra. Georg Thieme Verlag Stuttgart.

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