Cryptand 222, Kryptofix 222
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68-71 °C (lit.)

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1 g in glass bottle
250 mg in glass bottle
Cryptand used with potassium mirror to reduce a hindered distannene to a crystalline radical anion.
Bottomless glass bottle. Contents are inside inserted fused cone.

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Kryptofix is a registered trademark of Merck KGaA, Darmstadt, Germany


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dust mask type N95 (US),Eyeshields,Gloves


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Dynamers at the solid-liquid interface: controlling the reversible assembly/reassembly process between two highly ordered supramolecular guanine motifs.
Artur Ciesielski et al.
Angewandte Chemie (International ed. in English), 49(11), 1963-1966 (2010-02-06)
Direct analysis of Kryptofix 2.2.2 in 18FDG by gas chromatography using a nitrogen-selective detector.
R A Ferrieri et al.
Nuclear medicine and biology, 20(3), 367-369 (1993-04-01)
Jeff E Prest et al.
Journal of chromatography. A, 1260, 239-243 (2012-09-20)
This work shows how the inclusion of cryptand 222 as a leading electrolyte additive in isotachophoresis affects the electrophoretic mobilities of alkali metal cations. Using isotachophoresis the separation of alkali metals can be difficult due to the similar electrophoretic mobilities...
D L Alexoff et al.
International journal of radiation applications and instrumentation. Part A, Applied radiation and isotopes, 42(12), 1189-1193 (1991-01-01)
The 2.2.2 cryptand [4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo-(8.8.8)-hexacosane] was trapped efficiently on Dowex AG50W-X8 (100-200 mesh) cation exchange resin. The concentration of the 2.2.2 cryptand in water with 0.1-2% methanol, or in 1 N HCl, was decreased by a factor of > 4000 using...
A Kumar et al.
Clinical chemistry, 34(9), 1709-1712 (1988-09-01)
We report spectrophotometric methods for quantifying sodium and potassium in serum and plasma without sample pretreatment or solvent-extraction steps. The methods are based on novel chromogenic ionophores characterized by molecular structures highly preorganized for binding, which result in exceptionally high...
Related Content
Labeled isotopes used as target materials in imaging have provided insights into the various mechanisms of human physiology and have lead to treatments for diseases. Water-18O is used for the production of 18F radionuclides, such as 18FDG (Fluoro-deoxyglucose). 18FDG used in PET and with other imaging technologies, such as CT/SPECT, has led to the diagnosis and treatment of a wide range of diseases, including lung, liver, and brain tumors, epilepsy, and Alzheimer’s.
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