GUANABENZ Property

Melting point:

227-229° (dec)

Boiling point:

353.9±52.0 °C(Predicted)

Density 

1.49±0.1 g/cm3(Predicted)

storage temp. 

Store at -20°C

solubility 

DMSO: 12 mg/mL (51.93 mM);Ethanol: 15 mg/mL (64.91 mM)

pka

pKa 8.1 (Uncertain)

Water Solubility 

Water: Insoluble

Safety

Hazard Codes 

Xn

Risk Statements 

20/21/22-62

Safety Statements 

22-36/37/39

RIDADR 

3249

WGK Germany 

3

HazardClass 

6.1(b)

PackingGroup 

III

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H312Harmful in contact with skin

H332Harmful if inhaled

H361Suspected of damaging fertility or the unborn child

Precautionary statements

P201Obtain special instructions before use.

P202Do not handle until all safety precautions have been read and understood.

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

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

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

P281Use personal protective equipment as required.

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.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P308+P313IF exposed or concerned: Get medical advice/attention.

P312Call a POISON CENTER or doctor/physician if you feel unwell.

P322Specific measures (see …on this label).

P330Rinse mouth.

P363Wash contaminated clothing before reuse.

P405Store locked up.

P501Dispose of contents/container to..…

GUANABENZ Chemical Properties,Usage,Production

Description

Guanabenz is an α2-adrenergic agonist that exhibits pronounced hypotensive action, and that is associated with a reduction of overall peripheral vascular resistance, decline in frequency of cardiac contractions, and reduced cardiac output.

Originator

Wytensin,Wyeth,US,1982

Uses

alpha agonists

Uses

It is used both independently and in combination with oral diuretics for treating various degrees of hypertension.

Definition

ChEBI: Guanabenz is a dichlorobenzene.

Manufacturing Process

A mixture of 14.0 g of 2,6-dichlorobenzaldehyde, 10.8 g of aminoguanidine bicarbonate and 100 ml of pyridine was refluxed for 3 hours. The reaction mixture was poured into water and the crystalline precipitate filtered off; MP 225°C to 227°C.

Therapeutic Function

Antihypertensive

Synthesis

Guanabenz, [(2,6-dichlorobenzyliden) amino] guanidine (22.3.1), is synthesized in one step by reacting 2,6-dichlorobenzaldehyde with amino guanidine.

Purification Methods

Crystallise the guanidine from MeCN and store it in a CO2–free atmosphere. The monoHCl [23256-5-0] has m 178o(dec) [solubility w% at 25o is 1.1(H2O), 5(EtOH), 0.1(EtOAc), 0.06(CHCl3)]. It is an antihypertensive drug. [Holmes et al. Drugs 26 212 1983.]