After stirring for 15 minutes, newly ground anhydrous
K2CO3 (1.87 g, 11.56 mmol) was added to this solution.
One mL sample solution and 1 mL of saturated
K2CO3 were also placed into the outer section of the same cell, and the lid was immediately closed.
The reaction between 2-aminobenzothiazole and anhydrous
K2CO3, ethyl chloroformate, and ethanol provided ethyl (1,3-benzothiazol-2-yl) carbamate through the reaction with hydrazine hydrate and ethanol to produce N-(5-fuorobenzothiazol-2-yl) hydrazine carboxamide.
A mixture of 2-mercaptobenzothiazole (1.0 mmol) in dry acetone (20 ml), anhydrous
K2CO3 (1.1 mmol), and the compound-1 (1.0 mmol) obtained in the previous step was stirred at room temperature for 15-16 h.
Four groups of samples {A (Table 1), B (Table 2), C (Table 3), and D (Table 4)} were stored in four saturated solution conditions (LiCl RH15%, Mg[Cl.sub.2] RH30%,
K2CO3 RH 44%, NaCl RH 75%) for two months.
The clinical evidence indicated that the supplementation of buffering agents, bicarbonates and carbonates including sodium bicarbonate (NaHCO3), magnesium oxide (MgO), potassium bicarbonate (KHCO3) and potassium carbonate (
K2CO3) are of significant value in increasing the ruminal pH of SARA affected animals (Erdman, 1988).
N-(2-Hydroxypropyl)methacrylamide (HPMA) was synthesized as described previously using
K2CO3 [8] as a base.
The sorbent was activated chemically by utilizing 0.1M HCl and 0.1M
K2CO3. A close muffle furnace was used for thermal treatment of the sorbent.
Determination of amino acids in plasma: Plasma (0.5 mL) was deproteinized with 0.5 ml of 1.5 mM HClO4, followed by addition of 0.25 ml of 2 M
K2CO3. The neutralized extract was analyzed for amino acids using high-performance liquid chromatography.
Compound 1 was dissolved in acetone (HPLC grade) and then
K2CO3 was added.The reaction mixture was stirred for 30 minutes and then added tert-butyl bromoacetate.