WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 317551

CAS#: 2030-63-9 (free base)

Description: Clofazimine is a fat-soluble riminophenazine dye used for the treatment of leprosy. It has been used investigationally in combination with other antimycobacterial drugs to treat Mycobacterium avium infections in AIDS patients. Clofazimine also has a marked anti-inflammatory effect and is given to control the leprosy reaction, erythema nodosum leprosum. Clofazimine works by binding to the guanine bases of bacterial DNA, thereby blocking the template function of the DNA and inhibiting bacterial proliferation.

Chemical Structure

CAS# 2030-63-9 (free base)

Theoretical Analysis

MedKoo Cat#: 317551
Name: Clofazimine
CAS#: 2030-63-9 (free base)
Chemical Formula: C27H22Cl2N4
Exact Mass: 472.12215
Molecular Weight: 473.4
Elemental Analysis: C, 68.50; H, 4.68; Cl, 14.98; N, 11.84

Price and Availability

Size Price Availability Quantity
1.0g USD 250.0 Same day
2.0g USD 450.0 Same day
5.0g USD 650.0 Same day
10.0g USD 950.0 Same day
20.0g USD 1650.0 Same day
Bulk inquiry

Related CAS #: 352464-74-5 (nitrate)   2030-63-9 (free base)    

Synonym: Clofazimine; Chlofazimine; B 663; B 663; B-663; G 30320; Lampren; Lamprene; NSC 141046; NSC-141046;

IUPAC/Chemical Name: N,5-bis(4-chlorophenyl)-3-propan-2-yliminophenazin-2-amine


InChi Code: InChI=1S/C27H22Cl2N4/c1-17(2)30-24-16-27-25(15-23(24)31-20-11-7-18(28)8-12-20)32-22-5-3-4-6-26(22)33(27)21-13-9-19(29)10-14-21/h3-17,31H,1-2H3/b30-24+


Appearance: Reddish-brown solid powder.

Purity: >95% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO (8mg/mL)

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 473.4 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

Molarity Calculator

Calculate the mass, volume, or concentration required for a solution.

*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / CoA (available online).

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Dilution Calculator

Calculate the dilution required to prepare a stock solution.

1: Ferro BE, Meletiadis J, Wattenberg M, de Jong A, van Soolingen D, Mouton JW, van Ingen J. Clofazimine prevents the regrowth of Mycobacterium abscessus and Mycobacterium avium type strains exposed to amikacin and clarithromycin. Antimicrob Agents Chemother. 2015 Dec 7. pii: AAC.02615-15. [Epub ahead of print] PubMed PMID: 26643335.

2: Jarand J, Davis JP, Cowie RL, Field SK, Fisher DA. Long Term Follow Up Of Mycobacterium Avium Complex Lung Disease In Patients Treated With Regimens Including Clofazimine and/or Rifampin. Chest. 2015 Oct 29. doi: 10.1378/chest.15-0543. [Epub ahead of print] PubMed PMID: 26513209.

3: López-Gavín A, Tudó G, Vergara A, Hurtado JC, Gonzalez-Martín J. In vitro activity against Mycobacterium tuberculosis of levofloxacin, moxifloxacin and UB-8902 in combination with clofazimine and pretomanid. Int J Antimicrob Agents. 2015 Nov;46(5):582-5. doi: 10.1016/j.ijantimicag.2015.08.004. Epub 2015 Sep 7. PubMed PMID: 26421981.

4: Officioso A, Alzoubi K, Manna C, Lang F. Clofazimine Induced Suicidal Death of Human Erythrocytes. Cell Physiol Biochem. 2015;37(1):331-41. doi: 10.1159/000430357. Epub 2015 Aug 24. PubMed PMID: 26316080.

5: Faouzi M, Starkus J, Penner R. State-dependent blocking mechanism of Kv 1.3 channels by the antimycobacterial drug clofazimine. Br J Pharmacol. 2015 Nov;172(21):5161-73. doi: 10.1111/bph.13283. Epub 2015 Oct 9. PubMed PMID: 26276903.

6: Baijnath S, Naiker S, Shobo A, Moodley C, Adamson J, Ngcobo B, Bester LA, Singh S, Kruger HG, Naicker T, Govender T. Evidence for the presence of clofazimine and its distribution in the healthy mouse brain. J Mol Histol. 2015 Oct;46(4-5):439-42. doi: 10.1007/s10735-015-9634-3. Epub 2015 Jul 25. PubMed PMID: 26208572.

7: Roy K, Sil A, Das NK, Bandyopadhyay D. Effectiveness and safety of clofazimine and pentoxifylline in type 2 lepra reaction: a double-blind, randomized, controlled study. Int J Dermatol. 2015 Nov;54(11):1325-32. doi: 10.1111/ijd.12793. Epub 2015 Jun 20. PubMed PMID: 26094723.

8: Zhang S, Chen J, Cui P, Shi W, Zhang W, Zhang Y. Identification of novel mutations associated with clofazimine resistance in Mycobacterium tuberculosis. J Antimicrob Chemother. 2015 Sep;70(9):2507-10. doi: 10.1093/jac/dkv150. Epub 2015 Jun 4. PubMed PMID: 26045528; PubMed Central PMCID: PMC4539095.

9: Converse PJ, Tyagi S, Xing Y, Li SY, Kishi Y, Adamson J, Nuermberger EL, Grosset JH. Efficacy of Rifampin Plus Clofazimine in a Murine Model of Mycobacterium ulcerans Disease. PLoS Negl Trop Dis. 2015 Jun 4;9(6):e0003823. doi: 10.1371/journal.pntd.0003823. eCollection 2015 Jun. PubMed PMID: 26042792.

10: Lechartier B, Cole ST. Mode of Action of Clofazimine and Combination Therapy with Benzothiazinones against Mycobacterium tuberculosis. Antimicrob Agents Chemother. 2015 Aug;59(8):4457-63. doi: 10.1128/AAC.00395-15. Epub 2015 May 18. PubMed PMID: 25987624; PubMed Central PMCID: PMC4505229.