Phenoxybenzamine hydrochloride
- CAS No.
- 63-92-3
- Chemical Name:
- Phenoxybenzamine hydrochloride
- Synonyms
- PHENOXYBENZAMINE;dibenzyline;PHENOXYBENZAMINE HCL;688A;Bensylyt;benzylyt;SKF-688A;dibenylin;NSC 37448;nci-c01661
- CBNumber:
- CB8172020
- Molecular Formula:
- C18H22ClNO.ClH
- Molecular Weight:
- 340.29
- MDL Number:
- MFCD00055152
- MOL File:
- 63-92-3.mol
- MSDS File:
- SDS
| Product description | Number | Pack Size | Price |
| Phenoxybenzamine hydrochloride European Pharmacopoeia (EP) Reference Standard | Y0002282 | 80 mg | $118 |
| Phenoxybenzamine hydrochloride ≥97%, powder | B019 | 250mg | $127 |
| Phenoxybenzamine hydrochloride United States Pharmacopeia (USP) Reference Standard | 1526007 | 250mg | $421 |
| Phenoxybenzamine Hydrochloride >98.0%(T) | D0158 | 1g | $48 |
| Phenoxybenzamine Hydrochloride >98.0%(T) | D0158 | 25g | $419 |
| More product size | |||
| Melting point | 137.5°C |
|---|---|
| storage temp. | 15-25°C |
| solubility | soluble in organic solvents such as ethanol, DMSO, and dimethyl formamide (DMF). |
| pka | pKa 4.4 (Uncertain) |
| form | powder |
| color | white |
| Water Solubility | <0.01 g/100 mL at 18.5 ºC |
| Merck | 14,7256 |
| Stability | Stable for 2 years as supplied. Solutions in DMSO or distilled water may be stored at -20°C for up to 3 months. |
| InChI | 1S/C18H22ClNO.ClH/c1-16(15-21-18-10-6-3-7-11-18)20(13-12-19)14-17-8-4-2-5-9-17;/h2-11,16H,12-15H2,1H3;1H |
| InChIKey | VBCPVIWPDJVHAN-UHFFFAOYSA-N |
| SMILES | Cl[H].CC(COc1ccccc1)N(CCCl)Cc2ccccc2 |
| Toxicology and Carcinogenesis | Bioassay of Phenoxybenzamine Hydrochloride for Possible Carcinogenicity (CASRN 63-92-3) |
| CAS DataBase Reference | 63-92-3(CAS DataBase Reference) |
| FDA UNII | X1IEG24OHL |
| NCI Drug Dictionary | Dibenzyline |
| Proposition 65 List | Phenoxybenzamine |
| Proposition 65 List | Phenoxybenzamine Hydrochloride |
| ATC code | C04AX02 |
| IARC | 2B (Vol. 24, Sup 7) 1987 |
| EPA Substance Registry System | N-(2-Chloroethyl)-N-(1-methyl-2-phenoxyethyl)benzylamine hydrochloride (63-92-3) |
| UNSPSC Code | 41116107 |
| NACRES | NA.77 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS07,GHS08 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H302-H351 | |||||||||
| Precautionary statements | P201-P301+P312+P330-P308+P313 | |||||||||
| PPE | Eyeshields, Gloves, type P3 (EN 143) respirator cartridges | |||||||||
| Hazard Codes | Xn | |||||||||
| Risk Statements | 22-40 | |||||||||
| Safety Statements | 22-36/37/39-45 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | DP3750000 | |||||||||
| HS Code | 2922299000 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Acute Tox. 4 Oral Carc. 2 |
|||||||||
| NFPA 704 |
|
Phenoxybenzamine hydrochloride price More Price(30)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | Y0002282 | Phenoxybenzamine hydrochloride European Pharmacopoeia (EP) Reference Standard | 63-92-3 | 80 mg | $118 | 2025-07-31 | Buy |
| Sigma-Aldrich | B019 | Phenoxybenzamine hydrochloride ≥97%, powder | 63-92-3 | 250mg | $127 | 2025-07-31 | Buy |
| Sigma-Aldrich | 1526007 | Phenoxybenzamine hydrochloride United States Pharmacopeia (USP) Reference Standard | 63-92-3 | 250mg | $421 | 2025-07-31 | Buy |
| TCI Chemical | D0158 | Phenoxybenzamine Hydrochloride >98.0%(T) | 63-92-3 | 1g | $48 | 2025-07-31 | Buy |
| TCI Chemical | D0158 | Phenoxybenzamine Hydrochloride >98.0%(T) | 63-92-3 | 25g | $419 | 2025-07-31 | Buy |
Phenoxybenzamine hydrochloride Chemical Properties,Uses,Production
Description
Phenoxybenzamine hydrochloride (dibenzyline) is an orally effective, long-acting non-selective (alpha1 and alpha2) alpha-adrenoceptor blocking agent. It is used for the control of episodes of hypertension associated withpheochromocytoma. It literally produces a "chemical sympathectomy". It increases blood flow to the skin, mucosa and abdominal viscera, and lowers both supine and erect blood pressures. It has no effect on the parasympathetic system. The initialdose is 10 mg/day, increased by 10 mg every 4 days till the desired response is attained.The usual dosage range is 20-60mg/day.
Chemical Properties
white crystalline solid or powder. Odorless. soluble in ethanol, chloroform, propylene glycol, slightly soluble in benzene, slightly soluble in cold water. The melting point of its free base is 38-40 ° C, and it is soluble in benzene.
Originator
Dibenzyline, SKF, US ,1953
Uses
Phenoxybenzamine is used in treating pheochromocytoma, swelling of the medullary layer of the adrenal glands, during which a large quantity of epinephrine is produced, which leads to a significant elevation of blood pressure.
Uses
Phenoxybenzamine (5.0 to 60.0 mg/day) is used in order to control episodes of hypertension and sweating, it has a relatively slow onset and prolonged effect when compared to alternative α-blockers. If tachycardia is excessive, it may also be necessary to use a betablocker concomitantly. In addition, phenoxybenzamine has been tested for its efficacy in micturition disorders resulting from neurogenic bladder, functional outlet obstruction, and partial prostatic obstruction.
Definition
ChEBI: Phenoxybenzamine hydrochloride is an organic molecular entity.
brand name
Dibenzyline (WellSpring).
General Description
Phenoxybenzamine hydrochloride is a white crystalline powder. Melting point 137.5-140°C. Used as an antihypertensive drug.
Air & Water Reactions
Light sensitive and may be sensitive to exposure to air . Insoluble in water.
Mechanism of action
Phenoxybenzamine hydrochloride is a noncompetitive alpha-adrenergicreceptor blocker, and its action cannot be nullified by increasing the amount of agonist, or agonists. It causes epinephrine reversal in that the administration of epinephrine after pretreatment with phenoxybenzamine elicits vasodilation, and, conversely, phenoxybenzamine reverses epinephrine-mediated vasoconstriction to vasodilation. It may inhibit neuronal and extraneuronal uptake mechanisms of norepinephrine. At higher concentrations, it inhibits responses to 5-HT, histamine and acetylcholine.
Clinical Use
Oral phenoxybenzamine is used for the preoperativemanagement of patients with pheochromocytoma and in thechronic management of patients whose tumors are notamenable to surgery. Only about 20% to 30% of an oraldose is absorbed.
Side effects
The adverse effects of phenoxybenzamine include nasal congestion, miosis, postural hypotension, tachycardia, and inhibition of ejaculation.
Safety Profile
Confumed carcinogen with experimental carcinogenic and teratogenic data. Poison by intraperitoneal,intravenous, and subcutaneous routes. Human systemic effects by ingestion: changes in tubules, including acute renal failure, acute tubular necrosis. Moderately toxic by ingestion. Other experimental reproductive effects. Mutation data reported. A long-acting adrenergic blocker. When heated to decomposition it emits very toxic fumes of NOx and Cl-.
Synthesis
Phenoxybenzamine, N-(2-chloroethyl)-N-(1-methyl-2-phenoxyethyl) benzylamine (12.2.5), is synthesized by reacting phenol with propylenoxide, which forms 1-phenoxy-2-propanol (12.2.1), the chlorination of which with thionyl chloride gives 1-phenoxy-2-propylchloride (12.2.2). Reacting this with 2-aminoethanol leads to formation of 1-phenoxy-2-(2-hydroxyethyl)aminopropane (12.2.3). Alkylation of the secondary amino group gives N-(2-hydroxyethyl)-N-(1-methyl-2-phenoxyethyl)benzylamine (12.2.4), the hydroxyl group of which is chlorinated using thionyl chloride, giving phenoxybenzamine (12.2.5) [31].
Veterinary Drugs and Treatments
Phenoxybenzamine is used in small animals primarily for its effect
in reducing internal urethral sphincter tone in dogs and cats when
urethral sphincter hypertonus is present. It can also be used to treat
the hypertension associated with pheochromocytoma prior to surgery
or as adjunctive therapy in endotoxicosis.
In horses, phenoxybenzamine has been used for preventing or
treating laminitis in its early stages and to treat secretory diarrheas.
Drug interactions
Dibenzyline (phenoxybenzamine hydrochloride) may interact with compounds that stimulate both alpha- and beta-adrenergic receptors (i.e., epinephrine) to produce an exaggerated hypotensive response and tachycardia.
Carcinogenicity
Phenoxybenzamine hydrochloride is reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in experimental animals.
Metabolism
Metabolised in the liver and excreted in the urine and bile, but small amounts remain in the body for several days.
Dosage
Initially, 10 mg of Dibenzyline (phenoxybenzamine hydrochloride) twice a day. Dosage should be increased every other day, usually to 20 to 40 mg 2 or 3 times a day, until an optimal dosage is obtained, as judged by blood pressure control.
References
[1] Patent: WO2018/130942, 2018, A1. Location in patent: Page/Page column 10; 12
Phenoxybenzamine hydrochloride Preparation Products And Raw materials
Raw materials
1of2
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Chuanghai Biotechnology Co., Ltd | +8615350571055 | Sibel@chuanghaibio.com | China | 8753 | 58 |
| INNOBIO PHARM CO.,LTD | +8615600141006 | cindyyb@126.com | China | 279 | 58 |
| Shandong Xuhuang New material CoLTD | +86-15095020839 +86-17660422208 | China | 726 | 58 | |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29833 | 58 |
| HubeiwidelychemicaltechnologyCo.,Ltd | 18627774460 | faith@widelychemical.com | CHINA | 742 | 58 |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | sales@conier.com | China | 49977 | 58 |
| SIMAGCHEM CORP | +86-5922680277 +86-13806087780 | sale@simagchem.com | China | 17346 | 58 |
| TargetMol Chemicals Inc. | +1-781-999-5354; +17819995354 | marketing@targetmol.com | United States | 32470 | 58 |
| Hubei Ipure Biology Co., Ltd | +8613367258412 | ada@ipurechemical.com | China | 10236 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 | sales@tnjchem.com | China | 34563 | 58 |
View Lastest Price from Phenoxybenzamine hydrochloride manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-01-30 | Phenoxybenzamine hydrochloride
63-92-3
|
US $0.00-0.00 / Kg/Drum | 1KG | 98%min | 500kg | WUHAN FORTUNA CHEMICAL CO., LTD | |
 |
2026-01-30 | Phenoxybenzamine hydrochloride
63-92-3
|
US $10.00 / KG | 1KG | 99% | 10 mt | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2026-01-20 | Phenoxybenzamine hydrochloride
63-92-3
|
US $29.00 / mg | 98.04% | 10g | TargetMol Chemicals Inc. |
-
- Phenoxybenzamine hydrochloride
63-92-3
- US $0.00-0.00 / Kg/Drum
- 98%min
- WUHAN FORTUNA CHEMICAL CO., LTD
-
- Phenoxybenzamine hydrochloride
63-92-3
- US $10.00 / KG
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- Phenoxybenzamine hydrochloride
63-92-3
- US $29.00 / mg
- 98.04%
- TargetMol Chemicals Inc.
