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N-Carbamylglutamate
Also known as: 1188-38-1, N-carbamyl-l-glutamic acid, (s)-2-ureidopentanedioic acid, Carbaglu, N-carbamylglutamate, N-carbamoyl-l-glutamic acid
Molecular Formula
C6H10N2O5
Molecular Weight
190.15  g/mol
InChI Key
LCQLHJZYVOQKHU-VKHMYHEASA-N
FDA UNII
5L0HB4V1EW

Carglumic Acid is an orally active, synthetic structural analogue of N-acetylglutamate (NAG) and carbamoyl phosphate synthetase 1 (CPS 1) activator, with ammonia lowering activity. NAG, which is formed by the hepatic enzyme N-acetylglutamate synthase (NAGS), is an essential allosteric activator of the enzyme carbamoyl phosphate synthetase 1 (CPS 1). CPS 1 plays an essential role in the urea cycle and converts ammonia into urea. Upon oral administration, carglumic acid can replace NAG in NAGS deficient patients and activates CPS 1, which prevents hyperammonaemia.
Carglumic acid is a Carbamoyl Phosphate Synthetase 1 Activator. The mechanism of action of carglumic acid is as a Carbamoyl Phosphate Synthetase 1 Activator.
1 2D Structure

N-Carbamylglutamate

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
(2S)-2-(carbamoylamino)pentanedioic acid
2.1.2 InChI
InChI=1S/C6H10N2O5/c7-6(13)8-3(5(11)12)1-2-4(9)10/h3H,1-2H2,(H,9,10)(H,11,12)(H3,7,8,13)/t3-/m0/s1
2.1.3 InChI Key
LCQLHJZYVOQKHU-VKHMYHEASA-N
2.1.4 Canonical SMILES
C(CC(=O)O)C(C(=O)O)NC(=O)N
2.1.5 Isomeric SMILES
C(CC(=O)O)[C@@H](C(=O)O)NC(=O)N
2.2 Other Identifiers
2.2.1 UNII
5L0HB4V1EW
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Carbamylglutamate

2. N-carbamoyl-l-glutamate

3. N-carbamoylglutamate

4. N-carbamylglutamate

2.3.2 Depositor-Supplied Synonyms

1. 1188-38-1

2. N-carbamyl-l-glutamic Acid

3. (s)-2-ureidopentanedioic Acid

4. Carbaglu

5. N-carbamylglutamate

6. N-carbamoyl-l-glutamic Acid

7. Ureidoglutaric Acid

8. Carbamylglutamic Acid

9. Carbamino-l-glutamic Acid

10. (2s)-2-(carbamoylamino)pentanedioic Acid

11. L-n-carbamoylglutamic Acid

12. N-carbamyl-l-glutamate

13. N-carbamyl-glutamic Acid

14. L-glutamic Acid, N-(aminocarbonyl)-

15. Oe-312

16. 5l0hb4v1ew

17. N-carbamoyl-l-glutamate

18. Chebi:71028

19. N-carbamoylglutamate

20. Oe 312

21. Nsc-760124

22. Oe 312 (laboratory Code Designation)

23. Dsstox_cid_26706

24. Dsstox_rid_81839

25. Dsstox_gsid_46706

26. Carglumic Acid [inn]

27. Carbamylglutamate

28. Carbaglu (tn)

29. Cas-1188-38-1

30. N-(aminocarbonyl)-l-glutamic Acid(carglumic Acid)

31. Unii-5l0hb4v1ew

32. Carglumic Acid [usan:inn]

33. Carglumic-acid

34. Acido Carglumico

35. Acide Carglumique

36. Acidum Carglumicum

37. Glutamic Acid, N-carbamoyl-, L-

38. Ncgc00167549-01

39. Carglumic Acid [mi]

40. Carglumic Acid [jan]

41. Carglumic Acid [usan]

42. Schembl373546

43. Carglumic Acid [vandf]

44. Gtpl7458

45. Carbamyl-l-glutamic Acid

46. Carglumic Acid [mart.]

47. Carglumic Acid [usp-rs]

48. Carglumic Acid [who-dd]

49. Chembl1201780

50. Dtxsid7046706

51. Carglumic Acid (jan/usan/inn)

52. Carglumic Acid [ema Epar]

53. Oe312

54. Bcp16753

55. Hy-b0711

56. Zinc1530283

57. Tox21_112544

58. Carglumic Acid [orange Book]

59. Mfcd00047874

60. S5301

61. Akos010384789

62. N-carbamyl-l-glutamic Acid Crystalline

63. Tox21_112544_1

64. Cs-8208

65. Db06775

66. Nsc 760124

67. Ncgc00274073-01

68. Ds-17934

69. C-1805

70. C05829

71. D07130

72. A804117

73. Q822884

74. J-507608

75. Z1551429737

76. Carglumic Acid, United States Pharmacopeia (usp) Reference Standard

2.4 Create Date
2005-06-24
3 Chemical and Physical Properties
Molecular Weight 190.15 g/mol
Molecular Formula C6H10N2O5
XLogP3-2.4
Hydrogen Bond Donor Count4
Hydrogen Bond Acceptor Count5
Rotatable Bond Count5
Exact Mass190.05897142 g/mol
Monoisotopic Mass190.05897142 g/mol
Topological Polar Surface Area130 Ų
Heavy Atom Count13
Formal Charge0
Complexity227
Isotope Atom Count0
Defined Atom Stereocenter Count1
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Drug Information
1 of 2  
Drug NameCarbaglu
PubMed HealthCarglumic acid (By mouth)
Drug ClassesHyperammonemia Agent
Active IngredientCarglumic acid
Dosage FormTablet
RouteOral
Strength200mg
Market StatusPrescription
CompanyOrphan Europe

2 of 2  
Drug NameCarbaglu
PubMed HealthCarglumic acid (By mouth)
Drug ClassesHyperammonemia Agent
Active IngredientCarglumic acid
Dosage FormTablet
RouteOral
Strength200mg
Market StatusPrescription
CompanyOrphan Europe

4.2 Drug Indication

For the treatment of acute and chronic hyperammonaemia in patients with N-acetylglutamate synthase (NAGS) deficiency. This enzyme is an important component of the urea cycle to prevent build up of neurotoxic ammonium in the blood.


FDA Label


Carbaglu is indicated in treatment of:

- hyperammonaemia due to N-acetylglutamate-synthase primary deficiency;

- hyperammonaemia due to isovaleric acidaemia;

- hyperammonaemia due to methymalonic acidaemia;

- hyperammonaemia due to propionic acidaemia.


5 Pharmacology and Biochemistry
5.1 Pharmacology

The median Tmax of Carbaglu was 3 hours (range: 2-4). The daily dose of carglumic acid ranges from 100 to 250 mg/kg and this does are normally adjusted to maintain normal plasma levels of ammonia.


5.2 FDA Pharmacological Classification
5.2.1 Active Moiety
CARGLUMIC ACID
5.2.2 FDA UNII
5L0HB4V1EW
5.2.3 Pharmacological Classes
Carbamoyl Phosphate Synthetase 1 Activators [MoA]; Carbamoyl Phosphate Synthetase 1 Activator [EPC]
5.3 ATC Code

A16AA05


A - Alimentary tract and metabolism

A16 - Other alimentary tract and metabolism products

A16A - Other alimentary tract and metabolism products

A16AA - Amino acids and derivatives

A16AA05 - Carglumic acid


5.4 Absorption, Distribution and Excretion

Absorption

30% bioavailability; Cmax, mean, 100 mg/kg dose = 2.6 g/mL (range of 1.9 - 4.8) Carglumic acid is not subject to to intracellular degradation.


Route of Elimination

Following administration of a single radiolabeled oral dose of 100 mg/kg of body weight, 9% of the dose was excreted unchanged in the urine and up to 60% of the dose was excreted unchanged in the feces.


Volume of Distribution

The apparent volume of distribution was 2657 L (range: 1616-5797).


Clearance

The apparent total clearance was 5.7 L/min (range 3.0-9.7), the renal clearance was 290 mL/min (range 204-445), and the 24-hour urinary excretion was 4.5 % of the dose (range 3.5-7.5).


5.5 Metabolism/Metabolites

A proportion of carglumic acid may be metabolized by the intestinal bacterial flora. The likely end product of carglumic acid metabolism is carbon dioxide, eliminated through the lungs.


5.6 Biological Half-Life

Median values for the terminal half-life was 5.6 hours (range 4.3-9.5).


5.7 Mechanism of Action

Carglumic acid is a synthetic structural analogue of N-acetylglutamate (NAG), which is an essential allosteric activator of the liver enzyme carbamoyl phosphate synthetase 1 (CPS1). CPS1 is found in the mitochondria and is the first enzyme of the urea cycle, which converts ammonia into urea. Carglumic acid acts as a replacement for NAG in NAGS deficiency patients by activating CPS1 but it does not help to regulate the urea cycle.


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