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214077-90-4

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214077-90-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 214077-90-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,4,0,7 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 214077-90:
(8*2)+(7*1)+(6*4)+(5*0)+(4*7)+(3*7)+(2*9)+(1*0)=114
114 % 10 = 4
So 214077-90-4 is a valid CAS Registry Number.

214077-90-4Relevant articles and documents

Hexahelicenophanes

Meier, Herbert,Schwertel, Manfred,Kolshorn, Heinz

, p. 2009 - 2019 (2013)

A reaction sequence was studied for the preparation of cyclophanes 12, which contain 2,7-bis(2-phenylethenyl)naphthalene chromophores and polymethylenedioxy chains of different length. The irradiation of 12 in the presence of I2 led then, by ox

Ring-closing metathesis reaction-based synthesis of new classes of polyether macrocyclic systems

Naveen,Babu, Srinivasarao Arulananda

, p. 7758 - 7781 (2015/09/08)

Ring closing metathesis (RCM) reactions of suitable substrates having terminal olefins, which are assembled from various linkers and hydroxy benzaldehydes and syntheses of a wide range of 16-30 membered, new crown ether-type polyether, aza-polyether, bis aza-polyether macrocycles and dilactone moiety embedded polyether macrocycles (macrolides) are reported. After the ring-closure reaction, installation of different functional groups and functional group modification on the periphery of the synthesized polyether/crown ether macrocycles obtained in the RCM reactions are accomplished using the epoxidation, oxidation and catalytic hydrogenation-based synthetic transformations. Along this line, the syntheses of a variety of polyether macrocycles possessing epoxide or α-hydroxy ketone or 1,2-diol functionalities at the periphery have been shown. Furthermore, the synthesized α-hydroxy ketone functionality installed polyether macrocycles were subjected to the allylation and Reformatsky type reactions to obtain homoallyl alcohol moiety-based and lactone ring-appended polyether macrocycles.

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