74649-90-4 Usage
General Description
2,2-dimethyl-1,4,7,10,13-pentaoxacyclopentadecane, also known as crown ether, is a chemical compound with a cyclic structure containing five oxygen atoms. It is a type of macrocyclic polyether that has a high affinity for metal cations. Crown ethers are widely used in various chemical processes, including as complexing agents in coordination chemistry, as phase transfer catalysts in organic synthesis, and as ion-selective electrodes in analytical chemistry. The unique structure of 2,2-dimethyl-1,4,7,10,13-pentaoxacyclopentadecane gives it the ability to selectively bind certain metal ions, making it valuable in a range of industrial and research applications.
Check Digit Verification of cas no
The CAS Registry Mumber 74649-90-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,6,4 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 74649-90:
(7*7)+(6*4)+(5*6)+(4*4)+(3*9)+(2*9)+(1*0)=164
164 % 10 = 4
So 74649-90-4 is a valid CAS Registry Number.
InChI:InChI=1/C12H24O5/c1-12(2)11-16-8-7-14-4-3-13-5-6-15-9-10-17-12/h3-11H2,1-2H3
74649-90-4Relevant articles and documents
The Synthesis and Cation-complexing Ability of Alkyl Crown Ethers
Mizuno, Tadashi,Nakatsuji, Yohji,Yanagida, Shozo,Okahara, Mitsuo
, p. 481 - 484 (2007/10/02)
Alkyl-15-crown-5 and alkyl-12-crown-4 were prepared via polyethylene glycol β-haloalkyl ethers in two steps from terminal olefins, and their complexing ability with cations of alkali and alkaline earth metals was measured by using 1H NMR; it was found to be almost identified with that of the corresponding unsubstituted crown ether.A new type of alkyl crown ether with a chloro substituent could also be synthesized according to this method.
