Product Name

  • Name

    Azelastine hydrochloride

  • EINECS 200-306-6
  • CAS No. 79307-93-0
  • Article Data4
  • CAS DataBase
  • Density 1.25 g/cm3
  • Solubility 13 g/L at 20 °C (insoluble in ethanol, ether)
  • Melting Point 225-229 °C
  • Formula C22H24ClN3O.HCl
  • Boiling Point 533.9 °C at 760 mmHg
  • Molecular Weight 418.366
  • Flash Point 276.7 °C
  • Transport Information
  • Appearance white crystalline powder
  • Safety
  • Risk Codes 22
  • Molecular Structure Molecular Structure of 79307-93-0 (Azelastine hydrochloride)
  • Hazard Symbols Xn
  • Synonyms 1(2H)-Phthalazinone,4-[(4-chlorophenyl)methyl]-2-(hexahydro-1-methyl-1H-azepin-4-yl)-,monohydrochloride (9CI);A 5610;Allergodil;Astelin;Astepro;Azeptin;E 0659;Optivar;Rhinolast;W 2979M;
  • PSA 38.13000
  • LogP 5.03740

Synthetic route

2-(2-methylphenyl)pyridine
10273-89-9

2-(2-methylphenyl)pyridine

azelastine hydrochloride
79307-93-0

azelastine hydrochloride

C34H34N4O

C34H34N4O

Conditions
ConditionsYield
With C17H24N5Ru(1+)*F6P(1-); potassium acetate; potassium carbonate In 1-methyl-pyrrolidin-2-one at 35℃; for 72h; Inert atmosphere; Glovebox;90%
azelastine hydrochloride
79307-93-0

azelastine hydrochloride

A

7-oxo-azelastine

7-oxo-azelastine

B

2-oxo-azelastine

2-oxo-azelastine

Conditions
ConditionsYield
With water; iodine; sodium hydrogencarbonate In tetrahydrofuran at 20℃; for 4h; chemoselective reaction;A 37%
B 6%
azelastine hydrochloride
79307-93-0

azelastine hydrochloride

azelastine
58581-89-8

azelastine

Conditions
ConditionsYield
With sodium hydroxide In water pH=10; Inert atmosphere;
azelastine hydrochloride
79307-93-0

azelastine hydrochloride

2-(1-benzylazepan-4-yl)-4-(4-chlorobenzyl)phthalazin-1(2H)-one
103541-65-7

2-(1-benzylazepan-4-yl)-4-(4-chlorobenzyl)phthalazin-1(2H)-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: sodium hydroxide / water / pH 10 / Inert atmosphere
2.1: tri(4-tolyl)aminium hexafluorophosphate; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / -5 °C / Inert atmosphere
2.2: 0 °C / Inert atmosphere
View Scheme

Azelastine hydrochloride Chemical Properties

Product Name: Azelastine hydrochloride (CAS NO: 79307-93-0)
IUPAC Name: 4-[(4-chlorophenyl)methyl]-2-(1-methylazepan-4-yl)phthalazin-1-onehydrochloride

Molecular formula: C22H25Cl2N3
Formula weight: 418.36
Melting point: 225-229°C
Flash Point: 276.7 °C 
Enthalpy of Vaporization: 81 kJ/mol 
Boiling Point: 533.9 °C at 760 mmHg 
Vapour Pressure: 1.77E-11 mmHg at 25°C
Chemical synonyms: a5610 ; azeptin;e-0659 ; w-2979m ; 4-[(4-chlorophenyl)methyl]-2-(1-methylazepan-4-yl)-phthalazin-1-one hydrochloride ; 4-[(4-Chlorophenyl)methyl]-2-(hexahydro-1-methyl-1H-azepin-4-yl)-1(2H)-phthalazinone Hydrochloride

Azelastine hydrochloride Toxicity Data With Reference

1.    

orl-rat LD50:580 mg/kg

    KSRNAM    Kiso to Rinsho. Clinical Report. 20 (1986),5231.
2.    

ivn-rat LD50:24,600 µg/kg

    KSRNAM    Kiso to Rinsho. Clinical Report. 20 (1986),5231.
3.    

orl-mus LD50:143 mg/kg

    KSRNAM    Kiso to Rinsho. Clinical Report. 20 (1986),5231.
4.    

ivn-mus LD50:25,400 µg/kg

    KSRNAM    Kiso to Rinsho. Clinical Report. 20 (1986),5231.
5.    

orl-dog LD50:107 mg/kg

    KSRNAM    Kiso to Rinsho. Clinical Report. 20 (1986),5235.

Azelastine hydrochloride Safety Profile

Poison by ingestion and intravenous routes. An experimental teratogen. Other experimental reproductive effects. When heated to decomposition it emits toxic fumes of NOx and HCl.

Azelastine hydrochloride Specification

Side effects of azelastine nasal spray vary somewhat depending on the condition being treated. The most common side effects include bitter taste, headache, rhinitis, nose bleed, and somnolence. Adults being treated for vasomotor rhinitis may also experience dysesthesia and sinusitis. Additional side effects experienced by adults being treated for seasonal allergies include nasal burning, pharyngitis, dry mouth, paroxysmal sneezing, nausea, fatigue, dizziness, and weight gain. Additional side effect can include a slight mind alertness.

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