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Chemistry

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Also known as: 29975-16-4, Prosom, Eurodin, Nuctalon, Julodin, Esilgan
Molecular Formula
C16H11ClN4
Molecular Weight
294.74  g/mol
InChI Key
CDCHDCWJMGXXRH-UHFFFAOYSA-N
FDA UNII
36S3EQV54C

Estazolam
A benzodiazepine with anticonvulsant, hypnotic, and muscle relaxant properties. It has been shown in some cases to be more potent than DIAZEPAM or NITRAZEPAM.
Estazolam is a Benzodiazepine.
1 2D Structure

Estazolam

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
8-chloro-6-phenyl-4H-[1,2,4]triazolo[4,3-a][1,4]benzodiazepine
2.1.2 InChI
InChI=1S/C16H11ClN4/c17-12-6-7-14-13(8-12)16(11-4-2-1-3-5-11)18-9-15-20-19-10-21(14)15/h1-8,10H,9H2
2.1.3 InChI Key
CDCHDCWJMGXXRH-UHFFFAOYSA-N
2.1.4 Canonical SMILES
C1C2=NN=CN2C3=C(C=C(C=C3)Cl)C(=N1)C4=CC=CC=C4
2.2 Other Identifiers
2.2.1 UNII
36S3EQV54C
2.3 Synonyms
2.3.1 MeSH Synonyms

1. D-40ta

2. D40ta

3. Nuctalon

4. Prosom

5. Tasedan

2.3.2 Depositor-Supplied Synonyms

1. 29975-16-4

2. Prosom

3. Eurodin

4. Nuctalon

5. Julodin

6. Esilgan

7. D 40ta

8. 8-chloro-6-phenyl-4h-[1,2,4]triazolo[4,3-a][1,4]benzodiazepine

9. Estazolamum

10. D-40ta

11. Abbott-47631

12. 8-chloro-6-phenyl-4h-s-triazolo(4,3-a)(1,4)benzodiazepine

13. Estazolam Civ

14. Nsc 290818

15. U 33737

16. Nsc-290818

17. 36s3eqv54c

18. Chebi:4858

19. 4h-(1,2,4)triazolo(4,3-a)(1,4)benzodiazepine, 8-chloro-6-phenyl-

20. 53180-72-6

21. Ncgc00168250-01

22. 8-chloro-6-phenyl-4h-2,3,5,10b-tetraaza-benzo[e]azulene

23. 8-chloro-6-phenyl-4h-s-triazolo[4,3-a][1,4]benzodiazepine

24. Nemurel

25. Somnatrol

26. Cannoc

27. 4h-s-triazolo(4,3-a)(1,4)benzodiazepine, 8-chloro-6-phenyl-

28. 4h-[1,2,4]triazolo[4,3-a][1,4]benzodiazepine, 8-chloro-6-phenyl-

29. Abbott 47631

30. Estazolamum [inn-latin]

31. Estazolam [usan:inn:jan]

32. Prosom (tn)

33. Ccris 1955

34. Einecs 249-982-4

35. Brn 1220868

36. Unii-36s3eqv54c

37. 8-chloro-6-phenyl-4h-(1,2,4)triazolo(4,3-a)(1,4)benzodiazepine

38. Dea No. 2756

39. 8-chloro-6-phenyl-4h-(1,2,4)triazolo-(4,3-a)(1,4)benzodiazepine

40. 8-chloro-6-phenyl-4h-s-triazolo(4,3-a)(1,4)benzodiazepine (iupac)

41. Estazolam [inn]

42. Estazolam [jan]

43. Estazolam [mi]

44. Estazolam [iarc]

45. Estazolam [usan]

46. Dsstox_cid_572

47. Estazolam [vandf]

48. Estazolam [mart.]

49. Estazolam [who-dd]

50. Dsstox_rid_75665

51. Dsstox_gsid_20572

52. Schembl28766

53. Mls003899222

54. Bidd:gt0481

55. Estazolam (jp17/usp/inn)

56. Chembl285674

57. Gtpl7550

58. Zinc1370

59. Estazolam [orange Book]

60. Estazolam Civ [usp-rs]

61. Dtxsid5020572

62. Cdchdcwjmgxxrh-uhfffaoysa-

63. Estazolam [usp Monograph]

64. Estazolam 0.1 Mg/ml In Methanol

65. Estazolam 1.0 Mg/ml In Methanol

66. Bcp13317

67. Tox21_112609

68. Nsc290818

69. Akos005064373

70. Ab07556

71. Db01215

72. Smr000238168

73. Cas-29975-16-4

74. Wln: T B576 Bn Dnn Hn Ghj Ir& Lg

75. C06981

76. D00311

77. 975e164

78. A820132

79. Q-201071

80. Q3045264

81. 8-chloro-6-phenyl-4h-s-triazolo[4,4]benzodiazepine

82. 4h-s-triazolo[4,4]benzodiazepine, 8-chloro-6-phenyl-

83. Estazolam Solution, Drug Standard, 100 Mug/l In Methanol

84. 8-chloro-6-phenyl-4h-s-triazolo [4,3-a][1,4] Benzodiazepine

85. 8-chloro-6-phenyl-4h-s-triazolo-[4,3-a][1,4]benzodiazepine

86. Estazolam, United States Pharmacopeia (usp) Reference Standard

87. 4h-[1,4]triazolo[4,3-a][1,4]benzodiazepine, 8-chloro-6-phenyl-

88. 8-chloro-6-phenyl-4h-[1,4]triazolo[4,3-a][1,4]benzodiazepine

89. 8-chloro-6-phenyl-4h-benzo[f][1,2,4]triazolo[4,3-a][1,4]diazepine

90. Estazolam Solution, 1.0 Mg/ml In Methanol, Ampule Of 1 Ml, Certified Reference Material

91. 12-chloro-9-phenyl-2,4,5,8-tetraazatricyclo[8.4.0.0?,?]tetradeca-1(14),3,5,8,10,12-hexaene

92. 12-chloro-9-phenyl-2,4,5,8-tetraazatricyclo[8.4.0.0^{2,6}]tetradeca-1(10),3,5,8,11,13-hexaene

2.4 Create Date
2005-03-25
3 Chemical and Physical Properties
Molecular Weight 294.74 g/mol
Molecular Formula C16H11ClN4
XLogP31.7
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count3
Rotatable Bond Count1
Exact Mass294.0672241 g/mol
Monoisotopic Mass294.0672241 g/mol
Topological Polar Surface Area43.1 Ų
Heavy Atom Count21
Formal Charge0
Complexity407
Isotope Atom Count0
Defined Atom Stereocenter Count0
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 NameEstazolam
PubMed HealthEstazolam (By mouth)
Drug ClassesHypnotic
Drug LabelEstazolam, a triazolobenzodiazepine derivative, is an oral hypnotic agent. Estazolam occurs as a fine, white, odorless powder that is soluble in alcohol and practically insoluble in water. The chemical name for estazolam is 8-chloro-6-phenyl-4H-s-tri...
Active IngredientEstazolam
Dosage FormTablet
RouteOral
Strength2mg; 1mg
Market StatusPrescription
CompanyWatson Labs; Teva; Par Pharm

2 of 2  
Drug NameEstazolam
PubMed HealthEstazolam (By mouth)
Drug ClassesHypnotic
Drug LabelEstazolam, a triazolobenzodiazepine derivative, is an oral hypnotic agent. Estazolam occurs as a fine, white, odorless powder that is soluble in alcohol and practically insoluble in water. The chemical name for estazolam is 8-chloro-6-phenyl-4H-s-tri...
Active IngredientEstazolam
Dosage FormTablet
RouteOral
Strength2mg; 1mg
Market StatusPrescription
CompanyWatson Labs; Teva; Par Pharm

4.2 Drug Indication

For the short-term management of insomnia characterized by difficulty in falling asleep, frequent nocturnal awakenings, and/or early morning awakenings.


5 Pharmacology and Biochemistry
5.1 Pharmacology

Estazolam, a triazolobenzodiazepine derivative, is an oral hypnotic agent with anticonvulsant, hypnotic, and muscle relaxant properties. It has been shown in some cases to be more potent than diazepam or nitrazepam.


5.2 MeSH Pharmacological Classification

Anticonvulsants

Drugs used to prevent SEIZURES or reduce their severity. (See all compounds classified as Anticonvulsants.)


Anti-Anxiety Agents

Agents that alleviate ANXIETY, tension, and ANXIETY DISORDERS, promote sedation, and have a calming effect without affecting clarity of consciousness or neurologic conditions. ADRENERGIC BETA-ANTAGONISTS are commonly used in the symptomatic treatment of anxiety but are not included here. (See all compounds classified as Anti-Anxiety Agents.)


GABA Modulators

Substances that do not act as agonists or antagonists but do affect the GAMMA-AMINOBUTYRIC ACID receptor-ionophore complex. GABA-A receptors (RECEPTORS, GABA-A) appear to have at least three allosteric sites at which modulators act: a site at which BENZODIAZEPINES act by increasing the opening frequency of GAMMA-AMINOBUTYRIC ACID-activated chloride channels; a site at which BARBITURATES act to prolong the duration of channel opening; and a site at which some steroids may act. GENERAL ANESTHETICS probably act at least partly by potentiating GABAergic responses, but they are not included here. (See all compounds classified as GABA Modulators.)


5.3 FDA Pharmacological Classification
5.3.1 Active Moiety
ESTAZOLAM
5.3.2 FDA UNII
36S3EQV54C
5.3.3 Pharmacological Classes
Benzodiazepines [CS]; Benzodiazepine [EPC]
5.4 ATC Code

N - Nervous system

N05 - Psycholeptics

N05C - Hypnotics and sedatives

N05CD - Benzodiazepine derivatives

N05CD04 - Estazolam


5.5 Absorption, Distribution and Excretion

Absorption

Tablets have been found to be equivalent in absorption to an orally administered solution of estazolam. In healthy subjects who received up to three times the recommended dose, peak estazolam plasma concentrations occurred within two hours after dosing (range 0.5 to 6.0 hours) and were proportional to the administered dose, suggesting linear pharmacokinetics over the dosage range tested.


Route of Elimination

Estazolam is extensively metabolized. The elimination of the parent drug takes place via hepatic metabolism of estazolam to hydroxylated and other metabolites that are eliminated largely in the urine both free and conjugated. Less than 5% of a 2 mg dose of estazolam was excreted unchanged in the urine, with only 4% of the dose appearing in the feces. Radiolabel mass balance studies indicate that the main route of excretion is via the kidneys. After 5 days, 87% of the administered radioactivity was excreted in human urine. Less than 4% of the dose was excreted unchanged.


5.6 Metabolism/Metabolites

Extensively metabolized in the liver. In vitro studies with human liver microsomes indicate that the biotransformation of estazolam to the major circulating metabolite 4-hydroxy-estazolam is mediated by cytochrome P450 3A (CYP3A).


Estazolam has known human metabolites that include 4-hydroxyestazolam.

S73 | METXBIODB | Metabolite Reaction Database from BioTransformer | DOI:10.5281/zenodo.4056560


5.7 Biological Half-Life

The range of estimates for the mean elimination half-life of estazolam varies from 10 to 24 hours.


5.8 Mechanism of Action

Benzodiazepines bind nonspecifically to benzodiazepine receptors, which affects affects muscle relaxation, anticonvulsant activity, motor coordination, and memory. As benzodiazepine receptors are thought to be coupled to gamma-aminobutyric acid-A (GABAA) receptors, this enhances the effects GABA by increasing GABA affinity for the GABA receptor. Binding of the inhibitory neurotransmitter GABA to the site opens the chloride channel, resulting in a hyperpolarized cell membrane that prevents further excitation of the cell.


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ABOUT THIS PAGE

Esilgan Manufacturers

A Esilgan manufacturer is defined as any person or entity involved in the manufacture, preparation, processing, compounding or propagation of Esilgan, including repackagers and relabelers. The FDA regulates Esilgan manufacturers to ensure that their products comply with relevant laws and regulations and are safe and effective to use. Esilgan API Manufacturers are required to adhere to Good Manufacturing Practices (GMP) to ensure that their products are consistently manufactured to meet established quality criteria.

click here to find a list of Esilgan manufacturers with USDMF, JDMF, KDMF, CEP, GMP, COA and API Price related information on PhamaCompass.

Esilgan Suppliers

A Esilgan supplier is an individual or a company that provides Esilgan active pharmaceutical ingredient (API) or Esilgan finished formulations upon request. The Esilgan suppliers may include Esilgan API manufacturers, exporters, distributors and traders.

click here to find a list of Esilgan suppliers with USDMF, JDMF, KDMF, CEP, GMP, COA and API Price related information on PharmaCompass.

Esilgan USDMF

A Esilgan DMF (Drug Master File) is a document detailing the whole manufacturing process of Esilgan active pharmaceutical ingredient (API) in detail. Different forms of Esilgan DMFs exist exist since differing nations have different regulations, such as Esilgan USDMF, ASMF (EDMF), JDMF, CDMF, etc.

A Esilgan DMF submitted to regulatory agencies in the US is known as a USDMF. Esilgan USDMF includes data on Esilgan's chemical properties, information on the facilities and procedures used, and details about packaging and storage. The Esilgan USDMF is kept confidential to protect the manufacturer’s intellectual property.

click here to find a list of Esilgan suppliers with USDMF on PharmaCompass.

Esilgan JDMF

The Pharmaceuticals and Medical Devices Agency (PMDA) established the Japan Drug Master File (JDMF), also known as the Master File (MF), to permit Japanese and foreign manufacturers of drug substances, intermediates, excipients, raw materials, and packaging materials (‘Products’) to voluntarily register confidential information about the production and management of their products in Japan.

The Esilgan Drug Master File in Japan (Esilgan JDMF) empowers Esilgan API manufacturers to present comprehensive information (e.g., production methods, data, etc.) to the review authority, i.e., PMDA (Pharmaceuticals & Medical Devices Agency).

PMDA reviews the Esilgan JDMF during the approval evaluation for pharmaceutical products. At the time of Esilgan JDMF registration, PMDA checks if the format is accurate, if the necessary items have been included (application), and if data has been attached.

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Esilgan WC

A Esilgan written confirmation (Esilgan WC) is an official document issued by a regulatory agency to a Esilgan manufacturer, verifying that the manufacturing facility of a Esilgan active pharmaceutical ingredient (API) adheres to the Good Manufacturing Practices (GMP) regulations of the importing country. When exporting Esilgan APIs or Esilgan finished pharmaceutical products to another nation, regulatory agencies frequently require a Esilgan WC (written confirmation) as part of the regulatory process.

click here to find a list of Esilgan suppliers with Written Confirmation (WC) on PharmaCompass.

Esilgan NDC

National Drug Code is a comprehensive database maintained by the FDA that contains information on all drugs marketed in the US. This directory includes information about finished drug products, unfinished drug products, and compounded drug products, including those containing Esilgan as an active pharmaceutical ingredient (API).

Finished drug products

The FDA updates the NDC directory daily. The NDC numbers for Esilgan API and other APIs are published in this directory by the FDA.

Unfinished drugs

The NDC unfinished drugs database includes product listing information submitted for all unfinished drugs, such as active pharmaceutical ingredients (APIs), drugs intended for further processing and bulk drug substances for compounding.

Pharmaceutical companies that manufacture Esilgan as an active pharmaceutical ingredient (API) must furnish the FDA with an updated record of all drugs that they produce, prepare, propagate, compound, or process for commercial distribution in the US at their facilities.

Compounded drug products

The NDC directory also contains data on finished compounded human drug products that contain Esilgan and are produced by outsourcing facilities. While these outsourcing facilities are not mandated to assign a Esilgan NDC to their finished compounded human drug products, they may choose to do so.

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Esilgan GMP

Esilgan Active pharmaceutical ingredient (API) is produced in GMP-certified manufacturing facility.

GMP stands for Good Manufacturing Practices, which is a system used in the pharmaceutical industry to make sure that goods are regularly produced and monitored in accordance with quality standards. The FDA’s current Good Manufacturing Practices requirements are referred to as cGMP or current GMP which indicates that the company follows the most recent GMP specifications. The World Health Organization (WHO) has its own set of GMP guidelines, called the WHO GMP. Different countries can also set their own guidelines for GMP like China (Chinese GMP) or the EU (EU GMP).

PharmaCompass offers a list of Esilgan GMP manufacturers, exporters & distributors, which can be sorted by USDMF, JDMF, KDMF, CEP (COS), WC, API price, and more, enabling you to easily find the right Esilgan GMP manufacturer or Esilgan GMP API supplier for your needs.

Esilgan CoA

A Esilgan CoA (Certificate of Analysis) is a formal document that attests to Esilgan's compliance with Esilgan specifications and serves as a tool for batch-level quality control.

Esilgan CoA mostly includes findings from lab analyses of a specific batch. For each Esilgan CoA document that a company creates, the USFDA specifies specific requirements, such as supplier information, material identification, transportation data, evidence of conformity and signature data.

Esilgan may be tested according to a variety of international standards, such as European Pharmacopoeia (Esilgan EP), Esilgan JP (Japanese Pharmacopeia) and the US Pharmacopoeia (Esilgan USP).

Inform the supplier about your product requirements, specifying if you need a product with particular monograph like EP (Ph. Eur.), USP, JP, BP, or any other quality. In addition, clarify whether you need hydrochloride (HCl), anhydricum, base, micronisatum or a specific level of purity. To find reputable suppliers, utilize the filters and select those certified by GMP, FDA, or any other certification as per your requirement.
For your convenience, we have listed synonyms and CAS numbers to help you find the best supplier. The use of synonyms and CAS numbers can be helpful in identifying potential suppliers, but it is crucial to note that they might not always indicate the exact same product. It is important to confirm the product details with the supplier before making a purchase to ensure that it meets your requirements.
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