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Screening compounds

Antazoline phosphate

Also known as Antazoline phosphate (USP), N-Benzyl-4,5-dihydro-N-phenyl-1H-imidazole-2-methylamine monophosphate, 1H-Imidazole-2-methanamine, 4,5-dihydro-N-phenyl-N-(phenylmethyl)-, phosphate (1:1)

CAS 154-68-7Formula C17H22N3O4PMolar mass 363.35 g/molEC 205-831-4
GHS signal word: Warning. Pictograms: Harmful or irritant 12 suppliers listed
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Antazoline phosphate chemical structure, C17H22N3O4P, CAS 154-68-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
154-68-7
Formula
C17H22N3O4P
Molar mass
363.35 g/mol
EC number
205-831-4
HS code
293329
Category
Screening compounds

What is Antazoline phosphate?

Plain description, key identifiers and synonyms

Antazoline Phosphate is the phosphate salt of antazoline, an ethylenediamine derivative with histamine H1 antagonistic and sedative properties. Antazoline antagonizes histamine H1 receptor and prevents the typical allergic symptoms caused by histamine activities on capillaries, skin, mucous membranes, gastrointestinal and bronchial smooth muscles. These histamine activities include vasodilation, bronchoconstriction, increased vascular permeability, pain, itching, and spasmodic contractions of gastrointestinal smooth muscles. Antazoline is used to provide symptomatic relieve of allergic symptoms.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
N-benzyl-N-(4,5-dihydro-1H-imidazol-2-ylmethyl)aniline, phosphoric acid
CAS number
154-68-7 CAS number cross-checked
EC number
205-831-4
Molecular formula
C17H22N3O4P
UNII
VPR5FPH326
MDL number
MFCD00054317
InChIKey
DUIGUKRYYAGJAF-UHFFFAOYSA-N
InChI
InChI=1S/C17H19N3.H3O4P/c1-3-7-15(8-4-1)13-20(14-17-18-11-12-19-17)16-9-5-2-6-10-16;1-5(2,3)4/h1-10H,11-14H2,(H,18,19);(H3,1,2,3,4)
SMILES (canonical and isomeric)
C1CN=C(N1)CN(CC2=CC=CC=C2)C3=CC=CC=C3.OP(=O)(O)O

Synonyms

  • Antazoline phosphate (USP)
  • N-Benzyl-4,5-dihydro-N-phenyl-1H-imidazole-2-methylamine monophosphate
  • 1H-Imidazole-2-methanamine, 4,5-dihydro-N-phenyl-N-(phenylmethyl)-, phosphate (1:1)
  • 2-((N-Benzylanilino)methyl)-2-imidazoline phosphate (1:1)
  • Vasocon-a component antazoline phosphate
  • Antazoline phosphate (mart.)
  • Antazoline phosphate (usp-rs)
  • Antazoline phosphate (usp monograph)
  • 2-[(N-Benzylanilino)methyl]-2-imidazoline phosphate (1:1)
  • Phosphate, Antazoline
  • Antazoline phosphate component of vasocon-a
  • 2-((N-Benzylanilino)methyl)-2-imidazoline Phosphate(1:1)
  • 1H-Imidazole-2-methanamine, 4,5-Dihydro-N-phenyl-N-(phenylmethyl)-, Phosphate(1:1)
  • Antazoline HPO
  • Antazoline (phosphate)
  • N-benzyl-N-(4,5-dihydro-1H-imidazol-2-ylmethyl)aniline, phosphoric acid
  • Benzyl-(4,5-dihydro-1H-imidazol-2-ylmethyl)-phenyl-amine . HPO
  • Antazoline HO
  • N-benzyl-N-(4,5-dihydro-1H-imidazol-2-ylmethyl)aniline,phosphoric acid
  • (2-imidazolin-2-ylmethyl)phenylbenzylamine, phosphoric acid
  • Benzyl-(4,5-dihydro-1H-imidazol-2-ylmethyl)-phenyl-amine HO
  • Antazoline phosphate salt, analytical standard, for drug analysis
  • N-Benzyl-N-((4,5-dihydro-1H-imidazol-2-yl)methyl)aniline phosphate
  • Antazoline phosphate, United States Pharmacopeia (USP) Reference Standard
  • 1H-Imidazole-2-methanamine, 4,5-dihydro-N-phenyl-N-(phenylmethyl)-,phosphate (1:1)
Show all 26 synonyms
  • Phosphoric acid--N-benzyl-N-[(4,5-dihydro-1H-imidazol-2-yl)methyl]aniline (1/1)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
363.35 g/molcalc.
Exact mass
363.1348 Dacalc.
LogP (octanol/water)
1.77calc.
Topological polar surface area
105.4 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
5calc.
Heavy atoms
25calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.24calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccc(CN(CC2=NCCN2)c2ccccc2)cc1

c1ccc(CN(CC2=NCCN2)c2ccccc2)cc1

3 rings, 20 atoms, the Antazoline ring system.

11 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H332Harmful if inhaled.
  • H335May cause respiratory irritation.
Precautionary statements (20)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • 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 and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Antazoline phosphate suppliers

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All 12 suppliers
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Where suppliers are based

12 suppliers in 6 countries

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Antazoline phosphate price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Antazoline phosphate is traded under.

HS 2933.29Indicative HS code

Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the…

World exports in 2024
$1.43B
−7.6% vs 2023, imports $1.47B
2019 to 2024
Top exporters
  1. China28.1%
  2. France * partner reported12.7%
  3. India * partner reported10.3%
Top importers
  1. United Kingdom13.0%
  2. United States7.9%
  3. China6.5%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Antazoline phosphate is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Antazoline phosphate, based on the data on this page

What is Antazoline phosphate?

Antazoline Phosphate is the phosphate salt of antazoline, an ethylenediamine derivative with histamine H1 antagonistic and sedative properties.

What is the CAS number of Antazoline phosphate?

The CAS registry number of Antazoline phosphate is 154-68-7.

What is the molecular formula and weight of Antazoline phosphate?

The molecular formula of Antazoline phosphate is C17H22N3O4P and its molar mass is 363.35 g/mol.

What is Antazoline phosphate used for?

Known uses and roles of Antazoline phosphate include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Antazoline phosphate hazardous?

Antazoline phosphate carries the GHS signal word "Warning". Main hazards: harmful if swallowed, harmful in contact with skin, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Antazoline phosphate?

Antazoline phosphate is usually classified under HS code 293329 (Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Antazoline phosphate?

CompoundList lists 12 suppliers of Antazoline phosphate in China, India, United States, Australia and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Antazoline phosphate in India?

2 suppliers in India list Antazoline phosphate on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Antazoline phosphate?

Suppliers quote Antazoline phosphate on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Antazoline phosphate

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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