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Clinical data
Trade namesNailin
Other namesBMS-379224; BFE-1224; E-1224
ATC code
Legal status
Legal status
  • In general: ℞ (Prescription only)
  • [(2R,3R)-3-[4-(4-Cyanophenyl)-1,3-thiazol-2-yl]-2-(2,4-difluorophenyl)-1-(1,2,4-triazol-1-yl)butan-2-yl]oxymethyl dihydrogen phosphate
CAS Number
PubChem CID
CompTox Dashboard (EPA)
Chemical and physical data
Molar mass547.47 g·mol−1
3D model (JSmol)
  • C[C@@H](c1nc(-c2ccc(C#N)cc2)cs1)[C@@](Cn1cncn1)(OCOP(=O)(O)O)c1ccc(F)cc1F
  • InChI=1S/C23H20F2N5O5PS/c1-15(22-29-21(10-37-22)17-4-2-16(9-26)3-5-17)23(11-30-13-27-12-28-30,34-14-35-36(31,32)33)19-7-6-18(24)8-20(19)25/h2-8,10,12-13,15H,11,14H2,1H3,(H2,31,32,33)/t15-,23+/m0/s1

Fosravuconazole (trade name Nailin) is a triazole antifungal agent.[1][2] In Japan, it is approved for the treatment of onychomycosis, a fungal infection of the nail.[3] It is a prodrug that is converted into ravuconazole.[1]

The Drugs for Neglected Diseases Initiative and the Japanese pharmaceutical company Eisai are studying fosravuconazole as a potential treatment for eumycetoma.[1][4][5]


  1. ^ a b c Yamaguchi H (2016). "Potential of Ravuconazole and its Prodrugs as the New OralTherapeutics for Onychomycosis". Medical Mycology Journal. 57 (4): E93–E110. doi:10.3314/mmj.16-00006. PMID 27904057.
  2. ^ "Fosravuconazole - Seren Pharmaceuticals". Adis Insight. Springer Nature Switzerland AG.
  3. ^ "Oral Antifungal Agent Nailin Capsules 100 mg Approved in Japan" (Press release). Eisai. January 19, 2018.
  4. ^ "Fosravuconazole". Drugs for Neglected Diseases Initiative.
  5. ^ "Drugs for Neglected Diseases initiative and Eisai Co., Ltd. to Test Drug Candidate for Eumycetoma | News Release:2015 | Eisai Co., Ltd". Retrieved 2020-08-14.