• 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 Methanesulfonate

Phentolamine Methanesulfonate

Product ID P2818
Cas No. 65-28-1
Purity ≥98%
Product Unit SizeCostQuantityStock
50 mg $61.00 In stock
100 mg $102.00 In stock
500 mg $306.00 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.

65-28-1

Purity

≥98%

Formula

C17H19N3O • CH3SO3H

Formula Wt.

377.46

Chemical Name

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

IUPAC Name

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

Synonym

Phentolamine mesylate, Regitine, Rogitine

Melting Point

177-181°C

Solubility

Soluble in water, alcohol and chloroform.

Appearance

White Crystal Powder

Shipping and Storage

Store Temp

Ambient

Ship Temp

Ambient

Downloads

MSDS

P2818 MSDS PDF

Info Sheet

P2818 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

  • S7769

    Streptomycin Sulfate

    Aminoglycoside; protein translation inhibitor, ...

    ≥98%
  • A7071

    Atriopeptin II, rat/rabbit/mouse

    ANP analog, cardiomodulatory peptide; NPR-A ago...

    ≥95%
  • T0104

    Taxol Side Chain Methyl Ester

    Side chain attached to various taxanes.

    ≥96%
  • R5611

    Rocuronium Bromide

    Non-depolarizing NMJ blocker; nAChR and M2/3 mA...

    ≥98%
  • T342710

    Tirzepatide

    GLP-1/GIP receptor co-agonist

    ≥98%
  • T165133

    Tedizolid Phosphate

    Effective against gram-positive pathogens

    ≥98%
  • H1662

    HER2/neu (654-662) GP2

    Peptide fragment of HER2/neu/erbB2 receptor.

    ≥95%
  • B3278

    Biotin

    Water-soluble coenzyme, vitamin (B7) found in v...

    ≥98%
  • H3278

    HIV Reverse Transcriptase A2.1 Peptide

    Peptide, HIV-1 RT A2.1 epitope.

    ≥95%
  • B5870

    Borrelidin

    Macrolide; threonyl-tRNA synthetase/ligase inhi...

    ≥99%
  • N1977

    Neurokinin A (4-10)

    Endogenous neuropeptide, also known as substanc...

    ≥95%
  • C0824

    CCG1423

    Serum response factor inhibitor and MRTF-A bind...

    ≥98%
  • E4785

    Elvitegravir

    Integrase inhibitor.

    ≥98%
  • G1650

    Geniposide

    Iridoid glycoside found in Gardenia.

    ≥98%
  • N0160

    NAP Peptide

    Octapeptide derived from activity-dependent neu...

    ≥95%
  • T6833

    Triacetyl Aloe-emodin (Impurity A)

    Derivative of aloe-emodin, anthraquinone found ...

    ≥98%
  • B8276

    Butyric Acid Sodium

    HDAC inhibitor, RNA splicing modulator.

    ≥98%
  • D5992

    Doxapram Hydrochloride Hydrate

    K+ channel blocker, catecholamine release stimu...

    ≥98%
  • T3461

    Tiplaxtinin

    PAI-1 inhibitor.

    ≥98%
  • D1693

    Dexamethasone

    Glucocorticoid agonist.

    ≥99%

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