THE catalytic effect of small amounts of pyridine in the reaction between thionyl chloride and carboxylic acids is well known; Carré and Libermann 1 have shown further that it is of great ...

We found that hydrazinophthalazine can easily react with carboxylic acids derivatives, using reaction agents such as EDC and HOBT. Using our experimental settings, the 4-phenylsemicarbazide reaction, ...

In this study, we report a mild and convenient stereoretentive decarboxylative amidation of α,β-unsaturated carboxylic acids with easily procurable 1,4,2-dioxazol-5-ones, providing a practical ...

Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing ...

A uric acid test measures the amount of a waste product called uric acid (urate) in your blood or urine. Uric acid is a byproduct of the breakdown of chemicals called purines found in foods and drinks ...

Dissolved daptomycin is deduced to be an anion based on the following prescribing information: [10] The only inactive ingredient is sodium hydroxide ... recognize that the carboxylic acid on ...

The Central Board of Secondary Education (CBSE) has released the Chemistry Practical syllabus for Class 12 for the academic ...

Therefore, stock NaOH (pH 10.0) and HCl (pH 1.0) solutions were diluted with distilled water to reach desired basic and acidic pHs, respectively. Maximum swelling (95 g/g) was obtained at pH 8. In ...

(a) Annatto tree (known as “urucuzeiro” in Brazil) and annatto fruit (known as “urucum”), a small capsule with soft spines containing the seeds/dyes; (b) carotenoid formed by isoprene ...