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

MedKoo CAT#: 333052

CAS#: 235114-32-6 (free acid)

Description: Micafungin, also known as FK463, is a polyene antifungal medication used to treat and prevent invasive fungal infections including candidemia, abscesses and esophageal candidiasis. It inhibits the production of beta-1,3-glucan, an essential component of fungal cell walls. It received final approval from the U.S. Food and Drug Administration (FDA) on March 16, 2005. Micafungin works by way of concentration-dependent inhibition of 1,3-beta-D-glucan synthase resulting in reduced formation of 1,3-beta-D-glucan, which is an essential polysaccharide comprising one-third of the majority of Candida spp. cell walls. This decreased glucan production leads to osmotic instability and thus cellular lysis.

Chemical Structure

CAS# 235114-32-6 (free acid)

Theoretical Analysis

MedKoo Cat#: 333052
Name: Micafungin
CAS#: 235114-32-6 (free acid)
Chemical Formula: C56H71N9O23S
Exact Mass: 1269.438
Molecular Weight: 1270.284
Elemental Analysis: C, 52.95; H, 5.63; N, 9.92; O, 28.97; S, 2.52

Price and Availability

Size Price Availability Quantity
25.0mg USD 250.0 2 Weeks
50.0mg USD 450.0 2 Weeks
100.0mg USD 750.0 2 Weeks
200.0mg USD 1250.0 2 Weeks
500.0mg USD 2150.0 2 Weeks
1.0g USD 3250.0 2 Weeks
2.0g USD 5250.0 2 Weeks
5.0g USD 9650.0 2 Weeks
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Related CAS #: 208538-73-2 (sodium)   235114-32-6 (free acid)    

Synonym: Micafungin; Mycamine; FK463; FK-463; FK 463;

IUPAC/Chemical Name: 5-((1S,2S)-2-((2R,6S,9S,11R,12R,14aS,15S,16S,20S,23S,25aS)-20-((R)-3-amino-1-hydroxy-3-oxopropyl)-2,11,12,15-tetrahydroxy-6-((R)-1-hydroxyethyl)-16-methyl-5,8,14,19,22,25-hexaoxo-9-(4-(5-(4-(pentyloxy)phenyl)isoxazol-3-yl)benzamido)tetracosahydro-1H-dipyrrolo[2,1-c:2',1'-l][1,4,7,10,13,16]hexaazacyclohenicosin-23-yl)-1,2-dihydroxyethyl)-2-hydroxyphenyl hydrogen sulfate


InChi Code: InChI=1S/C56H71N9O23S/c1-4-5-6-17-86-32-14-11-28(12-15-32)39-21-33(63-87-39)27-7-9-29(10-8-27)49(75)58-34-20-38(70)52(78)62-54(80)45-46(72)25(2)23-65(45)56(82)43(37(69)22-41(57)71)60-53(79)44(48(74)47(73)30-13-16-36(68)40(18-30)88-89(83,84)85)61-51(77)35-19-31(67)24-64(35)55(81)42(26(3)66)59-50(34)76/h7-16,18,21,25-26,31,34-35,37-38,42-48,52,66-70,72-74,78H,4-6,17,19-20,22-24H2,1-3H3,(H2,57,71)(H,58,75)(H,59,76)(H,60,79)(H,61,77)(H,62,80)(H,83,84,85)/t25-,26+,31+,34-,35-,37+,38+,42-,43-,44-,45-,46-,47-,48-,52+/m0/s1

SMILES Code: CCCCCOC1=CC=C(C2=CC(C3=CC=C(C(N[C@H]4C[C@H]([C@H](NC([C@@H]5[C@H]([C@H](CN5C([C@H]([C@@H](CC(N)=O)O)NC([C@H]([C@@H]([C@H](C6=CC(OS(=O)(O)=O)=C(O)C=C6)O)O)NC([C@@H]7C[C@H](CN7C([C@H]([C@H](O)C)NC4=O)=O)O)=O)=O)=O)C)O)=O)O)O)=O)C=C3)=NO2)C=C1

Appearance: Solid powder

Purity: >98% (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

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 1270.284 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

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1: Spettel K, Galazka S, Kriz R, Camp I, Willinger B. Do Candida albicans Isolates with Borderline Resistant Micafungin MICs Always Harbor FKS1 Hot Spot Mutations? J Fungi (Basel). 2021 Jan 28;7(2):93. doi: 10.3390/jof7020093. PMID: 33525326.

2: Taormina G, Gopinath R, Moore J, Yasinskaya Y, Colangelo P, Reynolds K, Nambiar S. A Regulatory Review Approach for Evaluation of Micafungin for Treatment of Neonatal Candidiasis. Clin Infect Dis. 2021 Jan 18:ciab025. doi: 10.1093/cid/ciab025. Epub ahead of print. PMID: 33458754.

3: Zhong S, Zhu X, Zhao L, Song Y, Yu J, Zheng Z, Zang B. Optimization of Micafungin Dosage for Chinese Patients with Sepsis in the Intensive Care Unit Based on a Population Pharmacokinetic-Pharmacodynamic Analysis. Pharm Res. 2021 Jan 6. doi: 10.1007/s11095-020-02980-z. Epub ahead of print. PMID: 33404989.

4: Wingen-Heimann SM, Cornely OA, J G T Vehreschild M, Wisplinghoff H, Franke B, Schons M, von Bergwelt-Baildon M, Scheid C, Vehreschild JJ. Clinical and pharmacoeconomic evaluation of antifungal prophylaxis with continuous micafungin in patients undergoing allogeneic stem cell transplantation: A six-year cohort analysis. Mycoses. 2020 Dec 22. doi: 10.1111/myc.13232. Epub ahead of print. PMID: 33354800.

5: Alonso-Monge R, Guirao-Abad JP, Sánchez-Fresneda R, Pla J, Yagüe G, Argüelles JC. The Fungicidal Action of Micafungin is Independent on Both Oxidative Stress Generation and HOG Pathway Signaling in Candida albicans. Microorganisms. 2020 Nov 26;8(12):1867. doi: 10.3390/microorganisms8121867. PMID: 33256159; PMCID: PMC7768384.

6: Mullins C, Beaulac K, Sylvia L. Reply: Drug-Induced Liver Injury (DILI) With Micafungin: The Importance of Causality Assessment. Ann Pharmacother. 2020 Nov 15:1060028020973607. doi: 10.1177/1060028020973607. Epub ahead of print. PMID: 33191775.

7: Danjuma M, Elgara M, Al-Hattab F, Abaro R, Elzouki AN. Comment: Drug-Induced Liver Injury (DILI) With Micafungin: The Importance of Causality Assessment. Ann Pharmacother. 2020 Nov 13:1060028020973614. doi: 10.1177/1060028020973614. Epub ahead of print. PMID: 33185108.

8: Arastehfar A, Daneshnia F, Hilmioglu-Polat S, Ilkit M, Yasar M, Polat F, Metin DY, Dokumcu ÜZ, Pan W, Hagen F, Boekhout T, Perlin DS, Lass-Flörl C. Genetically related micafungin-resistant Candida parapsilosis blood isolates harbouring novel mutation R658G in hotspot 1 of Fks1p: a new challenge? J Antimicrob Chemother. 2021 Jan 19;76(2):418-422. doi: 10.1093/jac/dkaa419. PMID: 33175162.

9: Kimura SI, Kanda Y, Iino M, Fukuda T, Sakaida E, Oyake T, Yamaguchi H, Fujiwara SI, Jo Y, Okamoto A, Fujita H, Takamatsu Y, Saburi Y, Matsumura I, Yamanouchi J, Shiratori S, Gotoh M, Nakamura S, Tamura K; Japan Febrile Neutropenia Study Group. Efficacy and safety of micafungin in empiric and D-index-guided early antifungal therapy for febrile neutropenia; A subgroup analysis of the CEDMIC trial. Int J Infect Dis. 2020 Nov;100:292-297. doi: 10.1016/j.ijid.2020.08.081. Epub 2020 Sep 3. PMID: 32891738.

10: Tóth Z, Forgács L, Kardos T, Kovács R, Locke JB, Kardos G, Nagy F, Borman AM, Adnan A, Majoros L. Relative Frequency of Paradoxical Growth and Trailing Effect with Caspofungin, Micafungin, Anidulafungin, and the Novel Echinocandin Rezafungin against Candida Species. J Fungi (Basel). 2020 Aug 17;6(3):136. doi: 10.3390/jof6030136. PMID: 32824464; PMCID: PMC7560028.

11: Kapralos I, Mainas E, Neroutsos E, Apostolidi S, Siopi M, Apostolopoulou O, Dimopoulos G, Sambatakou H, Valsami G, Meletiadis J, Dokoumetzidis A. Population pharmacokinetics of micafungin over repeated doses in critically ill patients: a need for a loading dose? J Pharm Pharmacol. 2020 Dec;72(12):1750-1760. doi: 10.1111/jphp.13353. Epub 2020 Aug 12. PMID: 32789881.

12: Warn P, Thommes P, Sharp A, Sattar A, Undre N, Palacios-Fabrega JA, Karas A. Intermittent micafungin for prophylaxis in a rat model of chronic Candida albicans gut colonization. J Antimicrob Chemother. 2020 Oct 1;75(10):2919-2924. doi: 10.1093/jac/dkaa243. PMID: 32719853.

13: Suh JW, Kim SB, Yoon YK, Sohn JW, Kim MJ, Kim JH. Anidulafungin Versus Micafungin in the Treatment of Candidemia in Adult Patients. Mycopathologia. 2020 Aug;185(4):653-664. doi: 10.1007/s11046-020-00471-8. Epub 2020 Jul 23. PMID: 32705415; PMCID: PMC7377311.

14: López-Sánchez M, Moreno-Puigdollers I, Rubio-López MI, Zarragoikoetxea- Jauregui I, Vicente-Guillén R, Argente-Navarro MP. Pharmacokinetics of micafungin in patients treated with extracorporeal membrane oxygenation: an observational prospective study. Rev Bras Ter Intensiva. 2020 Jun;32(2):277-283. doi: 10.5935/0103-507x.20200044. Epub 2020 Jul 13. PMID: 32667449; PMCID: PMC7405733.

15: Prabhudas-Strycker KK, Butt S, Reddy MT. Candida tropicalis endocarditis successfully treated with AngioVac and micafungin followed by long- term isavuconazole suppression. IDCases. 2020 Jun 26;21:e00889. doi: 10.1016/j.idcr.2020.e00889. PMID: 32642436; PMCID: PMC7332520.

16: Marx J, Welte R, Gasperetti T, Moser P, Beer R, Ortler M, Jeske M, Stern R, Pomaroli A, Joannidis M, Bellmann R. Anidulafungin and Micafungin Concentrations in Cerebrospinal Fluid and in Cerebral Cortex. Antimicrob Agents Chemother. 2020 Jun 23;64(7):e00275-20. doi: 10.1128/AAC.00275-20. PMID: 32340985; PMCID: PMC7318006.

17: van Egmond JC, Hunfeld NGM, Rijnders BJA, Verhaar JAN. Persistent candida arthritis successfully treated with micafungin instillation and surgery. A case report. Med Mycol Case Rep. 2019 Dec 17;27:29-31. doi: 10.1016/j.mmcr.2019.12.011. Erratum in: Med Mycol Case Rep. 2020 Nov 19;30:52. PMID: 32123657; PMCID: PMC7036544.

18: Vena A, Bouza E, Bassetti M, Menichetti F, Merelli M, Grau S, Fortun J, Sánchez MI, Aguado JM, Merino P, Bonache F, Muñoz P. Comparison of the Safety and Tolerance Profile of Micafungin with that of Other Echinocandins and Azoles in Patients with Pre-existing Child-Pugh B or C Liver Disease: A Case-Control Retrospective Study. Infect Dis Ther. 2020 Mar;9(1):151-163. doi: 10.1007/s40121-020-00282-w. Epub 2020 Feb 21. PMID: 32086777; PMCID: PMC7054556.

19: Marena GD, Dos Santos Ramos MA, Bauab TM, Chorilli M. Biological Properties and Analytical Methods for Micafungin: A Critical Review. Crit Rev Anal Chem. 2020 Feb 16:1-17. doi: 10.1080/10408347.2020.1726726. Epub ahead of print. PMID: 32064916.

20: López-Sánchez C, Valcárcel D, Gómez V, López-Jiménez J, Serrano D, Rubio V, Solano C, Vázquez L, Ruiz I; Grupo Español de Trasplante Hematopoyético (GETH). Use of micafungin as antifungal prophylaxis in patients undergoing allogeneic hematopoietic stem cell transplantation (allo-HSCT) in Spain (GETH-MIC). Rev Esp Quimioter. 2020 Apr;33(2):110-115. doi: 10.37201/req/094.2019. Epub 2020 Feb 14. PMID: 32056418; PMCID: PMC7111230.