• Skip to primary navigation
  • Skip to main content
  • Skip to footer

LKT Labs

Biochemicals for Life Science Research

  • Products
    • New Products
    • Cancer Biology
    • Cardiovascular
    • Endocrine Signaling and Immunology
    • Metabolic and GI Pathology
    • Microbiology
    • Natural Products
    • Neuroscience
    • Peptides
    • Pharmaceutical Impurities and Derivatives
    • Stem Cell Modulators
  • Services
    • Custom Synthesis
    • Natural Product Isolation
    • Analytical Services
  • Int’l Distributors
  • Support
    • About LKT Labs
    • General Inquiry
    • Bulk Quote Request
    • Document Request
    • Technical Support
    • Catalog Request
    • Product Flyers
  • Contact Us
  • Cart
  • Login / Register
Phentolamine Hydrochloride

Phentolamine Hydrochloride

Product ID P2817
Cas No. 73-05-2
Purity ≥98%
Product Unit SizeCostQuantityStock
50 mg $87.00 In stock
100 mg $130.00 In stock
500 mg $501.00 In stock
Bulk Quote

Quicklinks

  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Custom Order

Description

Phentolamine is a nonselective α-adrenergic receptor antagonist that exhibits vasodilatory and antihypertensive activities. Phentolamine is occasionally used to treat erectile dysfunction. In vivo, phentolamine inhibits fructose-induced increases in blood pressure and activates ATP-sensitive K+ channels, altering Ca2+ signaling.

Product Info

Cas No.

73-05-2

Purity

≥98%

Formula

C17H19N3O • HCl

Formula Wt.

317.81

Chemical Name

3-[[(4,5-Dihydro-1H-imidazol-2-yl)methyl](4-methyl- phenyl)amino]phenol hydrochloride

IUPAC Name

3-[N-(4, 5-dihydro-1H-imidazol-2-ylmethyl)-4-methylanilino]phenol;hydrochloride

Melting Point

239-240°C

Solubility

Soluble in water (1g/50mL) and alcohol (1g/70mL). Slightly soluble in chloroform. Practically insoluble in acetone and ethyl acetate.

Appearance

Brown Crystalline Powder

Shipping and Storage

Store Temp

Ambient

Ship Temp

Ambient

Downloads

MSDS

P2817 MSDS PDF

Info Sheet

P2817 Info Sheet PDF

References

Zhou K, Kumar U, Yuen VG, et al. The effects of phentolamine on fructose-fed rats. Can J Physiol Pharmacol. 2012 Aug;90(8):1075-85. PMID: 22783820.

Ahn SW, Kim SH, Kim JH, et al. Phentolamine inhibits the pacemaker activity of mouse interstitial cells of Cajal by activating ATP-sensitive K+ channels. Arch Pharm Res. 2010 Mar;33(3):479-89. PMID: 20361315.

Dinsmore WW, Wyllie MG. Vasoactive intestinal polypeptide/phentolamine for intracavernosal injection in erectile dysfunction. BJU Int. 2008 Sep;102(8):933-7. PMID: 18485029.

Custom Order

  • Size of single unit expressed as number (e.g. '500' in the case of 500 mg)
  • Total quantity of unit size desired (e.g. '10' in the case of 10 x 500 mg). If only one unit is desired, you may leave this blank.
  • This field is for validation purposes and should be left unchanged.

Related Products

  • C0247

    Calcineurin Autoinhibitory Peptide

    Peptide; calcineurin inhibitor.

    ≥95%
  • C4758

    Closantel Sodium

    Protonophore; chitinase OvCHT1 inhibitor.

    ≥98%
  • C2946

    Chlorambucil

    Nitrogen mustard, DNA alkylator.

    ≥99%
  • C0169

    Carbenoxolone Disodium

    Synthetic derivative of glycyrrhizin; connexin ...

    ≥97%
  • M4100

    MK-0524

    DP1 antagonist.

    ≥99%
  • A9814

    AZD-4547

    FGFR inhibitor.

    ≥98%
  • X4400

    XL-228

    Abl (T315I) inhibitor.

    ≥98%
  • R1626

    Regorafenib Monohydrate

    VEGFR1/2/3, TIE2, PDGFRβ, FGFR1, c-Kit, RET, B...

    ≥99%
  • E6825

    Ergosterol

    Sterol cell membrane component found in yeast a...

    ≥96%
  • M3368

    Mirtazapine

    Piperazine; 5-HT1 agonist, 5-HT2/3 and α2-adre...

    ≥98%
  • D5898

    Doxycycline Monohydrate

    Tetracycline; protein translation inhibitor, MM...

    ≥97%
  • C3576

    Citreoviridin A

    Mycotoxin; F1F0 ATP synthase inhibitor.

    ≥95%
  • P6857

    Protocatechuic Acid

    Polyphenol found in many plants and foods.

    ≥97%
  • N4974

    NMS-E628

    ALK and Ros1 inhibitor, Trk antagonist.

    ≥98%
  • E5217

    β-Endorphin, human

    Endogenous opioid peptide; μOR agonist.

    ≥95%
  • V9200

    VX-950

    NS3/4A serine protease inhibitor.

    ≥98%
  • E7578

    Estramustine

    Nitrogen mustard and estradiol derivative; micr...

    ≥97%
  • C0155

    10-Hydroxycamptothecin

    Camptothecin derivative; topoisomerase I inhibi...

    ≥98%
  • A9602

    Azacitidine

    Nucleoside (cytidine) analog; DNMT inhibitor, p...

    ≥98%
  • A5283

    [Sar1]-Angiotensin II

    Peptide, derivative of AT II, involved in vasoc...

    ≥95%

Footer

  • Contact Us
  • About Us
  • Site Map
  • Terms and Conditions
LKT Laboratories, Inc.
545 Phalen Blvd.
St. Paul MN, 55130

Ph: (888)-558-5227
Fax: (888)-558-7329

©2026 LKT Laboratories, All Rights Reserved - Products for research use only