75507-26-5 Usage
Uses
Different sources of media describe the Uses of 75507-26-5 differently. You can refer to the following data:
1. Ethylene oxide is important or critical to the production of detergents, thickeners, solvents, plastics, and various organic chemicals such as ethylene glycol, ethanolamines, simple and complex glycols, polyglycol ethers and other compounds.
2. 2-Hydroxymethyl-12-crown-4 can be used:To prepare an ester of lasalocid with crown ether to study its complex formation with monovalent cations.To prepare hydrogel adsorbents for potential usage in the recovery of lithium-ions from seawater.As a starting material in the synthesis of metal-free phthalocyanines and metallophthalocyanines.
Purification Methods
Purify it by chromatography on Al2O3 with EtOAc as eluent to give a hygroscopic colourless oil, which is distilled under high vacuum and is distilled in vacuo. It has IR: 3418 (OH) and 1103 (COC) cm-1, NMR: max 3.70s. [Kimura et al. J Chem Soc, Chem Commun 492 1983, Pugia et al. J Org Chem 52 2617 1987.] S -(-)-5-Hydroxymethyl -2(5 H )-furanone [78508-96 -0] M 114.1, 39 -42o, 40 -44o , b 1 3 0o/0.3mm, [ ] 546 -180o, [ ] D -148o (c 1.4, H2O). It is purified by chromatography on Silica gel using hexane/EtOAc (1:1) to give a colourless oil which is distilled using a Kügelrohr apparatus, and the distillate crystallises on cooling. It has RF 0.51 on Whatman No 1 paper using pentan-1-ol and 85% formic acid (1:1) and developing with ammoniacal AgNO3. [Boll Acta Chem Scand 22 3245 1968, NMR: Oppolzer et al. Helv Chim Acta 68 2100 1985, Beilstein 18 III/IV 56, 18/1 V 54.]
Check Digit Verification of cas no
The CAS Registry Mumber 75507-26-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,5,0 and 7 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 75507-26:
(7*7)+(6*5)+(5*5)+(4*0)+(3*7)+(2*2)+(1*6)=135
135 % 10 = 5
So 75507-26-5 is a valid CAS Registry Number.
InChI:InChI=1/C9H18O5/c10-7-9-8-13-4-3-11-1-2-12-5-6-14-9/h9-10H,1-8H2
75507-26-5Relevant articles and documents
Facile Synthesis of Hydroxymethylcrown Ethers
Ikeda, Isao,Emura, Hiroshi,Okahara, Mitsuo
, p. 73 - 74 (2007/10/02)
-
Synthesis of Substituted Crown Ethers from Oligoethylene Glycols
Ikeda, Isao,Yamamura, Shingo,Nakatsuji, Yohji,Okahara, Mitsuo
, p. 5355 - 5358 (2007/10/02)
A convenient synthetic method for preparing 12-crown-4, 15-crown-5, 18-crown-6, and 21-crown-7 bearing various substituents by intramolecular cyclization of the corresponding substituted oligoethylene glycols in high yields is described.Substituents include modifiable pendent groups such as phenyl and hydroxymethyl, as well as various alkyl groups.Stability constants for the new substituted crown ethers with sodium and potassium ions in methanol were determined by potentiometric titration.The absolute effect of pendent groups on stability constants was insignificant.
