Phentolamine hydrochloride
Phentolamine hydrochloride (CAS: 73-05-2), with the molecular formula C17H19N3O · HCl and a molecular weight of 317.81 g/mol, is a fine chemical supplied by Tech Serve Solutions. This white to off-white powder functions as an alpha-adrenergic antagonist. It is primarily utilised in research settings for its pharmacological properties, particularly in studies related to cardiovascular function and receptor interactions.
- IUPAC
- 2-[N-(3-Hydroxyphenyl)-p-toluidinomethyl]-2-imidazolidine hydrochloride

Pharmacological Research
Utilised as a research tool in pharmacology to investigate alpha-adrenergic receptor activity and its effects on physiological systems. Its antagonist properties make it valuable for studying receptor blockade.
Cardiovascular Studies
Applied in research focused on cardiovascular physiology and pathology, where its ability to influence blood pressure and vascular tone can be explored.
Neuroscience Research
May be used in neuroscience research to study neurotransmission and the role of adrenergic receptors in the central nervous system.
| Molecular weight | 317.81 |
|---|---|
| Empirical formula | C17H19N3O · HCl |
| Assay | ≥98% (TLC) |
| Form | powder |
| Colour | white to off-white |
| Solubility | ethanol: soluble14 mg/mLH2O: soluble20 mg/mLH2O: unstable (prepare immediately prior to use) |

Hazard statements
- H302Harmful if swallowed
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22 |
| Safety statements (S) | 22-24/25 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Phentolamine hydrochloride used for?
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Phentolamine hydrochloride is used in research settings for pharmacological studies, particularly investigating alpha-adrenergic receptor activity, cardiovascular function, and neurotransmission.
What are the CAS number and formula for Phentolamine hydrochloride?
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The CAS number for Phentolamine hydrochloride is 73-05-2, and its empirical formula is C17H19N3O · HCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Phentolamine hydrochloride with an assay of ≥98% (TLC). We do not represent this product as USP, BP, or EP grade.
How should Phentolamine hydrochloride be handled safely?
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Phentolamine hydrochloride is classified as harmful if swallowed (H302). Handle with appropriate personal protective equipment, including a dust mask (N95), eyeshields, and gloves. Avoid dust formation and inhalation.
How is Phentolamine hydrochloride packed and shipped?
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Phentolamine hydrochloride is available as a powder. Specific packaging and shipping details are confirmed upon order placement, adhering to all relevant regulations for export.
How can I request a sample or quote for Phentolamine hydrochloride?
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Please contact our sales team via the website or directly by phone to request a sample or a quotation for Phentolamine hydrochloride.
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