redi-dri® anhydrous salts

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Alkyl- and arylthiodediazoniations of dry arenediazonium o-benzenedisulfonimides. Efficient and safe modifications of the stadler and ziegler reactions to prepare alkyl aryl and diaryl sulfides

Barbero et al.

The Journal of organic chemistry, 65(18), 5600-5608 (2000-09-02)

The reaction between dry arenediazonium o-benzenedisulfonimides 1 and sodium thiolates in anhydrous methanol represents an efficient and safe procedure, of general validity, for the preparation of unfunctionalized or variously functionalized alkyl aryl and diaryl sulfides. As a rule, the reaction

On the preparation of fluorine-18 labelled XeF(2) and chemical exchange between fluoride ion and XeF(2).

Neil Vasdev et al.

Journal of the American Chemical Society, 124(43), 12863-12868 (2002-10-24)

A recent report claims to have prepared [18F]XeF2 by exchange between a large stoichiometric excess of XeF2 and no-carrier-added 18F-, as salts of the [2,2,2-crypt-M+] (M = K or Cs) cations, in CH2Cl2 or CHCl3 solvents at room temperature. Attempts

A novel trisprotonated beta-dialdiminate cryptand.

Aileen Chin et al.

Dalton transactions (Cambridge, England : 2003), (32)(32), 6315-6326 (2009-08-06)

The beta-dialdiminate cryptand L(4) can be isolated in the tris protonated state, [H(3)L(4)](3+), from the condensation of malonaldehyde (generated in situ from its tetraacetal derivative) with tris-2-aminoethylamine (tren) in [3 + 2] mode. The cryptate cannot be deprotonated under aqueous

Modification of the solid-state nature of sulfathiazole and sulfathiazole sodium by spray drying.

Stefano Bianco et al.

AAPS PharmSciTech, 13(2), 647-660 (2012-05-03)

Solid-state characterisation of a drug following pharmaceutical processing and upon storage is fundamental to successful dosage form development. The aim of the study was to investigate the effects of using different solvents, feed concentrations and spray drier configuration on the

Rapid Multi-Residue Analysis of Pesticides in Pulses by LC-MS/MS.

Keiko Iwakoshi et al.

Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan, 57(5), 150-154 (2016-10-28)

Rapid multi-residue analysis of pesticides in pulses was developed using LC-MS/MS. Pesticide residues in 5 g of homogenized pulses were extracted with 30 mL of acetonitrile and salted out with 4 g of anhydrous magnesium sulfate and 2 g of

Method Development for Selected Bisphenols Analysis in Sweetened Condensed Milk from a Can and Breast Milk Samples by HPLC-DAD and HPLC-QqQ-MS: Comparison of Sorbents (Z-SEP, Z-SEP Plus, PSA, C18, Chitin and EMR-Lipid) for Clean-Up of QuEChERS Extract.

Tomasz Tuzimski et al.

Molecules (Basel, Switzerland), 24(11) (2019-06-05)

Background: Identification and quantitative determination of analytes released from the packaging material is undoubtedly a difficult and tricky task, requiring the chemical analyst to develop an individual approach to obtain reliable analytical information. Unfortunately, it is still challenging for scientists

Calorimetric and diffractometric evidence for the sequential crystallization of buffer components and the consequential pH swing in frozen solutions.

Prakash Sundaramurthi et al.

The journal of physical chemistry. B, 114(14), 4915-4923 (2010-03-23)

Sequential crystallization of succinate buffer components in the frozen solution has been studied by differential scanning calorimetry and X-ray diffractometry (both laboratory and synchrotron sources). The consequential pH shifts were monitored using a low-temperature electrode. When a solution buffered to

Assessment of Test Portion Sizes after Sample Comminution with Liquid Nitrogen in an Improved High-Throughput Method for Analysis of Pesticide Residues in Fruits and Vegetables.

Steven J Lehotay et al.

Journal of agricultural and food chemistry, 68(5), 1468-1479 (2020-01-17)

In this study, sample processing of bulk commodities using an efficient one-step comminution procedure with liquid nitrogen (LN2) was devised and assessed in the analysis of pesticide residues in fruits and vegetables. LN2 was added to the fresh samples from

Comparison of DAD and FLD Detection for Identification of Selected Bisphenols in Human Breast Milk Samples and Their Quantitative Analysis by LC-MS/MS.

Tomasz Tuzimski et al.

Journal of AOAC International, 103(4), 1029-1042 (2020-11-27)

Determination of bisphenols released from packaging material is undoubtedly a difficult and tricky task, requiring the chemical analyst to develop an individual approach to obtain reliable analytical information. QuECHERS (Quick, Easy, Cheap, Effective, Rugged, and Safe)/dispersive solid-phase extraction (d-SPE) technique

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