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2D Structure
Also known as: 154-68-7, Antazoline phosphate [usp], Antazoline phosphate salt, Antazoline hpo, N-benzyl-4,5-dihydro-n-phenyl-1h-imidazole-2-methylamine monophosphate, Nsc-755865
Molecular Formula
C17H22N3O4P
Molecular Weight
363.3  g/mol
InChI Key
DUIGUKRYYAGJAF-UHFFFAOYSA-N
FDA UNII
VPR5FPH326

An antagonist of histamine H1 receptors.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
N-benzyl-N-(4,5-dihydro-1H-imidazol-2-ylmethyl)aniline;phosphoric acid
2.1.2 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)
2.1.3 InChI Key
DUIGUKRYYAGJAF-UHFFFAOYSA-N
2.1.4 Canonical SMILES
C1CN=C(N1)CN(CC2=CC=CC=C2)C3=CC=CC=C3.OP(=O)(O)O
2.2 Other Identifiers
2.2.1 UNII
VPR5FPH326
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Analergine

2. Antasten

3. Antazoline

4. Antazoline Hydrochloride

5. Antazoline Phosphate (1:1)

6. Antistine

7. Arithmin

8. Hydrochloride, Antazoline

9. Imidamine

10. Phenazoline

11. Phosphate, Antazoline

2.3.2 Depositor-Supplied Synonyms

1. 154-68-7

2. Antazoline Phosphate [usp]

3. Antazoline Phosphate Salt

4. Antazoline Hpo

5. N-benzyl-4,5-dihydro-n-phenyl-1h-imidazole-2-methylamine Monophosphate

6. Nsc-755865

7. Antazoline Phosphate (usp)

8. Vpr5fph326

9. Mls000028623

10. 2-((n-benzylanilino)methyl)-2-imidazoline Phosphate (1:1)

11. Smr000058669

12. Benzyl-(4,5-dihydro-1h-imidazol-2-ylmethyl)-phenyl-amine . Hpo

13. N-benzyl-n-(4,5-dihydro-1h-imidazol-2-ylmethyl)aniline;phosphoric Acid

14. 1h-imidazole-2-methanamine, 4,5-dihydro-n-phenyl-n-(phenylmethyl)-, Phosphate (1:1)

15. 1h-imidazole-2-methanamine, 4,5-dihydro-n-phenyl-n-(phenylmethyl)-,phosphate (1:1)

16. Unii-vpr5fph326

17. Antazoline . Hpo

18. Antazoline H3po4

19. Einecs 205-831-4

20. Mfcd00054317

21. Opera_id_1677

22. Schembl23316

23. Mls001148180

24. 2-yl)methyl)aniline Phosphate

25. Spectrum1500126

26. Cid_158798

27. Chembl1200550

28. Hms500e05

29. Antazoline Phosphate [mi]

30. Dtxsid00165507

31. Hms1920e05

32. Hms2091k05

33. Hms2235h13

34. Hms3372h07

35. Pharmakon1600-01500126

36. Antazoline Phosphate [vandf]

37. Antazoline Phosphate [mart.]

38. Ccg-39133

39. Nsc755865

40. Antazoline Phosphate [usp-rs]

41. Antazoline Phosphate [who-dd]

42. Akos015963420

43. N-benzyl-n-(4,5-dihydro-1h-imidazol-2-ylmethyl)aniline,phosphoric Acid

44. Nsc 755865

45. Ncgc00094590-01

46. Ncgc00094590-02

47. Ncgc00094590-03

48. Ac-20134

49. Antazoline Phosphate [orange Book]

50. N-benzyl-n-((4,5-dihydro-1h-imidazol-

51. Antazoline Phosphate [usp Monograph]

52. Db-043231

53. Ft-0766726

54. 3-piperidinecarboxylicacidt-butylesterhcl

55. D02950

56. Vasocon-a Component Antazoline Phosphate

57. Antazoline Phosphate Component Of Vasocon-a

58. J-009133

59. Sr-01000000255-4

60. Q27291961

61. Antazoline Phosphate Salt, Analytical Standard, For Drug Analysis

62. N-benzyl-n-((4,5-dihydro-1h-imidazol-2-yl)methyl)aniline Phosphate

63. Antazoline Phosphate, United States Pharmacopeia (usp) Reference Standard

2.4 Create Date
2005-06-29
3 Chemical and Physical Properties
Molecular Weight 363.3 g/mol
Molecular Formula C17H22N3O4P
Hydrogen Bond Donor Count4
Hydrogen Bond Acceptor Count6
Rotatable Bond Count5
Exact Mass363.13479319 g/mol
Monoisotopic Mass363.13479319 g/mol
Topological Polar Surface Area105 Ų
Heavy Atom Count25
Formal Charge0
Complexity364
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count2
4 Pharmacology and Biochemistry
4.1 MeSH Pharmacological Classification

Anti-Allergic Agents

Agents that are used to treat allergic reactions. Most of these drugs act by preventing the release of inflammatory mediators or inhibiting the actions of released mediators on their target cells. (From AMA Drug Evaluations Annual, 1994, p475) (See all compounds classified as Anti-Allergic Agents.)


Histamine H1 Antagonists

Drugs that selectively bind to but do not activate histamine H1 receptors, thereby blocking the actions of endogenous histamine. Included here are the classical antihistaminics that antagonize or prevent the action of histamine mainly in immediate hypersensitivity. They act in the bronchi, capillaries, and some other smooth muscles, and are used to prevent or allay motion sickness, seasonal rhinitis, and allergic dermatitis and to induce somnolence. The effects of blocking central nervous system H1 receptors are not as well understood. (See all compounds classified as Histamine H1 Antagonists.)