BETAZOLE HYDROCHLORIDE Property

Melting point:

224-226°

storage temp. 

Store at -20°C

solubility 

DMSO: 37 mg/mL (201.01 mM);Ethanol: 18 mg/mL (97.79 mM)

Water Solubility 

Water: 37 mg/mL (201.01 mM)

Safety

HS Code 

2933199090

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

BETAZOLE HYDROCHLORIDE Chemical Properties,Usage,Production

Originator

Histalog,Lilly,US,1953

Uses

Betazole Hydrochloride is a histamine H2 receptor agonist that is used as a gastric stimulant for the investigation of gastric secretion activity.

Definition

ChEBI: The dihydrochloride salt of betazole.

Manufacturing Process

A solution of 55 grams (1.1 mol) of hydrazine hydrate in 100 ml of methanol was cooled in a water bath and stirred while a solution of 48 grams (0.50 mol) of pure γ-pyrone in 100 ml of methanol was added over a period of about 15 minutes. After the addition was complete, the solution was allowed to stand at room temperature for about 1 hour, and was placed in a 1 liter hydrogenation bomb. 25 ml of liquid ammonia were added cautiously with stirring, followed by about 15 cc of Raney nickel catalyst. The bomb was charged with hydrogen to 1,800 pounds pressure, heated to 90°C and agitated. The quantity of hydrogen required to convert the hydrazone into the desired aminoethylpyrazole was taken up in about 3 hours. The bomb was cooled and opened, and the contents filtered. The filtrate was evaporated under reduced pressure to remove the methanol and the residual liquid was distilled under reduced pressure, whereby there were obtained 44.5 grams (81% yield) of 3-β-aminoethylpyrazole boiling at 118°-123°C at a pressure of 0.5 mm of Hg.

brand name

Histalog (Lilly).

Therapeutic Function

Diagnostic aid (gastric secretion)