Date published: 2025-12-18

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Isoniazid (CAS 54-85-3)

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Alternate Names:
INH; Isonicotinic acid hydrazide; Isonicotinic hydrazide
Application:
Isoniazid is an antituberculosis agent and an inhibitor/activator of CYP isoenzymes
CAS Number:
54-85-3
Purity:
≥98%
Molecular Weight:
137.14
Molecular Formula:
C6H7N3O
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Isoniazid is a front-line antituberculosis agent. It generates nitric oxide when activated by KatG. Isoniazid is also a strong inhibitor of DPH metabolism. This compound is both an inhibitor and inducer of various isoforms of cytochrome P450, a family of enzymes extensively involved in the metabolism of xenobiotics. CYP isoforms induced by Isoniazid include CYP2E1. Isoniazid reversibly inhibits CYP2C19 and CYP3A4 and inactivates CYP1A2 and CYP2A6.


Isoniazid (CAS 54-85-3) References

  1. Correlation between isoniazid resistance and superoxide reactivity in mycobacterium tuberculosis KatG.  |  Ghiladi, RA., et al. 2005. J Am Chem Soc. 127: 13428-42. PMID: 16173777
  2. Isoniazid as a substrate and inhibitor of myeloperoxidase: identification of amine adducts and the influence of superoxide dismutase on their formation.  |  Forbes, LV., et al. 2012. Biochem Pharmacol. 84: 949-60. PMID: 22846601
  3. Effects of pyridoxine on the intestinal absorption and pharmacokinetics of isoniazid in rats.  |  Zhou, Y., et al. 2013. Eur J Drug Metab Pharmacokinet. 38: 5-13. PMID: 23090666
  4. Synthesis and bioevaluation of some new isoniazid derivatives.  |  Matei, L., et al. 2013. Bioorg Med Chem. 21: 5355-61. PMID: 23823011
  5. A High Dose of Isoniazid Disturbs Endobiotic Homeostasis in Mouse Liver.  |  Li, F., et al. 2016. Drug Metab Dispos. 44: 1742-1751. PMID: 27531952
  6. Characterization of MymA protein as a flavin-containing monooxygenase and as a target of isoniazid.  |  Saraav, I., et al. 2017. Chem Biol Drug Des. 89: 152-160. PMID: 27539124
  7. Preparation, characterization, and in vitro evaluation of isoniazid and rifampicin-loaded archaeosomes.  |  Attar, A., et al. 2018. Chem Biol Drug Des. 91: 153-161. PMID: 28667670
  8. Discovery of Novel Enhancers of Isoniazid Toxicity in Mycobacterium tuberculosis.  |  Lentz, F., et al. 2018. Molecules. 23: PMID: 29617279
  9. New lipophilic isoniazid derivatives and their 1,3,4-oxadiazole analogues: Synthesis, antimycobacterial activity and investigation of their mechanism of action.  |  Vosátka, R., et al. 2018. Eur J Med Chem. 151: 824-835. PMID: 29679902
  10. Pulmonary Delivery of Isoniazid in Nanogel-Loaded Chitosan Hybrid Microparticles for Inhalation.  |  Omar, SM., et al. 2019. J Aerosol Med Pulm Drug Deliv. 32: 78-87. PMID: 30526251
  11. Simultaneous voltammetric determination of acetaminophen and isoniazid using MXene modified screen-printed electrode.  |  Zhang, Y., et al. 2019. Biosens Bioelectron. 130: 315-321. PMID: 30784985
  12. Vibrational spectra of pyrazinamide and isoniazid studied by terahertz spectroscopy and density functional theory.  |  Liang, J., et al. 2020. Spectrochim Acta A Mol Biomol Spectrosc. 228: 117591. PMID: 31761544
  13. The perceived impact of isoniazid resistance on outcome of first-line rifampicin-throughout regimens is largely due to missed rifampicin resistance.  |  Van Deun, A., et al. 2020. PLoS One. 15: e0233500. PMID: 32421749
  14. A Systematic Review and Meta-analysis of Isoniazid Pharmacokinetics in Healthy Volunteers and Patients with Tuberculosis.  |  Hong, BL., et al. 2020. Clin Ther. 42: e220-e241. PMID: 33032843

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Isoniazid, 5 g

sc-205722
5 g
$25.00

Isoniazid, 50 g

sc-205722A
50 g
$99.00

Isoniazid, 100 g

sc-205722B
100 g
$143.00