Embonate

Embonic acid (Pamoic acid, 4,4 -methylene bis[3-hydroxy-2-naphthalenecarboxylic acid])... 

Regardless of the hydrogen generation technique used, tlie unpurified syii gas contains the oxides of carbon, which deactivate tlie aimnonia syntliesis catalyst and must be removed. In tlie sliift converters, embon monoxide is calaljlically converted to carbon dioxide, wliich is removed more easily Ilian... 

The resultant embonate (530 g) was filtered off, washed twice with a solution of acetone (75 ml) in water (425 ml), and dried at 100°C to give an amorphous yellow powder, MP 290°C to 291 °C (with decomp.). 588 g of the embonate was dissolved in boiling water (4 liters). 

Hydrobromic acid 50% w/w (325 g) diluted with water (2 liters) was added slowly at the boil and the precipitated embonic acid removed by filtering hot and washing twice with hot water (1 liter). The filtrate and washings were evaporated to dryness in a steam pan and the residue recrystallized from ethyl alcohol (1,200 ml), to yield the dibromide (320 g). 

Common Name Pyrvinium embonate viprynium embonate Structural Formula ... 

Spiramycin is a macrolide-antibiotic complex produced by Streptomyces ambofaciens. It is used for the treatment and control of a number of bacterial and mycoplasmal infections in a variety of food-producing animals. Like tylosin, spiramycin has been used in many countries as a feed additive at low inclusion rates. It is available as spiramycin embonate for use in animal feed, and as the adipate for administration by parenteral routes. 

Methylene bis[3-hydroxy-2-naphthalenecarboxylic acid see embonic acid. 

Dicoumarol (dicumarol) Diiodohydroxyquinoline (iodoquinol) Embonic acid (pamoic acid)... 

Durenol, tl 16 Embonic acid, m235 Epoxy ethane, el 29... 

The solid formed was removed by filtration and washed with acetone (150 ml). Filtrate and washings were diluted with water to 4 liters and heated to 60°C under reflux. To this was added a solution prepared from embonic acid (388 g), sodium hydroxide (80 g) and water (5 liters), the whole refluxed for 10 minutes and thereafter allowed to cool overnight. 

Common Name Pyrvinium embonate Viprynium embonate... 

V. Haikala, Rapid high-performance liquid chromatographic determination of noscapine hydrogen embonate, J. Chromatogr., 389 293 (1987). 

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