FMN

FLAVIN MONONUCLEOTIDE

Created:	1999-07-08
Last modified:	2024-09-27

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1,884 entries where FMN is found as a standalone ligand77 entries where FMN is covalently linked to polymer or other heterogen groups

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Chemical Details
Formal Charge	0
Atom Count	52
Chiral Atom Count	3
Bond Count	54
Aromatic Bond Count	6

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Chemical Component Summary
Name	FLAVIN MONONUCLEOTIDE
Synonyms	RIBOFLAVIN MONOPHOSPHATE
Systematic Name (OpenEye OEToolkits)	[(2R,3S,4S)-5-[7,8-dimethyl-2,4-bis(oxidanylidene)benzo[g]pteridin-10-yl]-2,3,4-tris(oxidanyl)pentyl] dihydrogen phosphate
Formula	C₁₇ H₂₁ N₄ O₉ P
Molecular Weight	456.344
Type	NON-POLYMER

Chemical Descriptors
Type	Program	Version	Descriptor
SMILES	ACDLabs	12.01	N=2C(=O)NC(=O)C3=Nc1cc(C)c(C)cc1N(C=23)CC(O)C(O)C(O)COP(=O)(O)O
SMILES	CACTVS	3.385	Cc1cc2N=C3C(=O)NC(=O)N=C3N(C[CH](O)[CH](O)[CH](O)CO[P](O)(O)=O)c2cc1C
SMILES	OpenEye OEToolkits	1.7.6	Cc1cc2c(cc1C)N(C3=NC(=O)NC(=O)C3=N2)CC(C(C(COP(=O)(O)O)O)O)O
Canonical SMILES	CACTVS	3.385	Cc1cc2N=C3C(=O)NC(=O)N=C3N(C[C@H](O)[C@H](O)[C@H](O)CO[P](O)(O)=O)c2cc1C
Canonical SMILES	OpenEye OEToolkits	1.7.6	Cc1cc2c(cc1C)N(C3=NC(=O)NC(=O)C3=N2)C[C@@H]([C@@H]([C@@H](COP(=O)(O)O)O)O)O
InChI	InChI	1.03	InChI=1S/C17H21N4O9P/c1-7-3-9-10(4-8(7)2)21(15-13(18-9)16(25)20-17(26)19-15)5-11(22)14(24)12(23)6-30-31(27,28)29/h3-4,11-12,14,22-24H,5-6H2,1-2H3,(H,20,25,26)(H2,27,28,29)/t11-,12+,14-/m0/s1
InChIKey	InChI	1.03	FVTCRASFADXXNN-SCRDCRAPSA-N

Drug Info: DrugBank

DrugBank data are sourced from datasets licensed under a Creative Common's Attribution-NonCommercial 4.0 International License

DrugBank ID	DB03247
Name	Flavin mononucleotide
Groups	investigational approved
Description	Flavin mononucleotide (FMN), also known as riboflavin 5'-phosphate, is one of the two major coenzymes derived from [riboflavin] (vitamin B2) and is one of the principal forms in which dietary riboflavin is found.[A274616,L54226] FMN is composed of an isoalloxazine ring - which serves as the active redox center - attached to a ribityl phosphate chain.[L54241] Alongside [flavin adenine dinucleotide] (FAD), for which it is a direct precursor, FMN plays critical roles in energy production, cellular function, and in the metabolism of fats, drugs, and steroids.[L54226] In addition to its systemic use as a means of riboflavin supplementation, a topical ophthalmic preparation of FMN was approved by the FDA in October 2025 for use as a photoenhancer in epithelium-on corneal collagen cross-linking.[L54281,L54221]
Synonyms	Riboflavin sodium phosphate Riboflavin phosphate riboflavin 5'-phosphate FMN riboflavin 5'-monophosphate Riboflavin monophosphate riboflavine dihydrogen phosphate Riboflavin-5'-phosphate sodium salt dihydrate Riboflavin-5-phosphate Vitamin B2 (riboflavin-5-phosphate) Flavin mononucleotide Vitamin B2 phosphate Riboflavin 5'-phosphate sodium anhydrous riboflavin 5'-(dihydrogen phosphate)
Brand Names	Tonicol Et A-D-C Ampoules/comprimes Photrexa Cross-linking Kit Multi Vitamin Drops with Fluoride and Iron Beminal With C Fortis Pws Vitamin B-Complex M.V.I.-12 Riboflavin Inj 50mg/ml Mvc 9+4 Inj Fortaplex Inj Multivitamin Drops with Fluoride Neo-bex Injectable Multi Vitamin Drops with Fluoride with Iron Multi Vitamin and Fluoride Photrexa Infa Drops Multivitamins Super Vitalex Ampoule Buvable Vitamine 110 Liq Kanga Sport Vitamins B & C Plus Minerals Kanga-B Vitamin B Group + C Foletra Dynam Ampoule Et Tablet Multi-Vitamin Fluoride Nrg Plus Liq Multi-Vit with Fluoride Kanga-kid Multi-vitamin & Mineral Multisol Photrexa Viscous B Virol Vitamin and Mineral Supplement - Liq Soluvit N Vitamin B Complex Vitamin B Complex 100 Multi-Vitamin with Fluoride Toni Com Liq Epioxa Cross-linking Multi-Vitamin Drops with Fluoride and Iron Paramettes Syrup Mvc 9 Plus 3 Inj MultiVitamin, Iron and Fluoride Drops Ultra Enerforce BumP DHA MultiVitamin with Fluoride Drops B-plex 100 Tini-cal Ampoules Pediatric Infuvite Multiple Vitamins Multi-Vit with Fluoride and Iron Supravite 10ml Ampoule Supravite C 1000 M.V.I. 12 Hemarexin Amp M.V.I. Paediatric Poly-Vite Pediatric Oral Solution Gtf Support Caplet Poly-Vite/Iron Oral Solution Alsimine W Vitamins A D M.V.I. Pediatric Multi Vitamin, Iron and Fluoride Somarexin and C 1000 Multi Vitamin Drops with Fluoride Neo Bex Elixir B Complex W C and B12 Inj Dr. AVi MULTIVITAMIN with Zinc, Real Ginger, Lemon and Lemongrass Kenwood Liquid Supplement SoluVita Multivitamin Drops with Fluoride Infuvite Adult Beminal Fortis Elx Multivit Et Fer Ampoules Et Comprimes Adult Infuvite Multiple Vitamins Floriva Plus Hemarexin Liquid and Drinkable Ampoules Infuvite Pediatric M.V.I. Adult Maxi 6 Liq Revitex Ampoules Et Comprimes Cobalefol MultiVitamin Drops with Fluoride and Iron
Indication	Administered systemically, flavin mononucleotide is primarily indicated for the treatment of riboflavin deficiency in a variety of contexts (e.g. anemia).[L54226] It is also used off-label for the prophylaxis of migraine headaches.[L54226] A topical ophthalmic preparation of flavin mononucleotide, Epioxa, is indicated as a photoenhancer for use in epithelium-on corneal collagen cross-linking for the treatment of keratoconus in adults and pediatric patients aged 13 years and older.[L54221]
Categories	Biological Factors Coenzymes Enzymes and Coenzymes Flavins Heterocyclic Compounds, Fused-Ring Micronutrients Nucleic Acids, Nucleotides, and Nucleosides Nucleotides Photoenhancer Pigments, Biological Pteridines Ribonucleotides Vitamin B Complex Vitamins
CAS number	146-17-8

Drug Targets

DrugBank data are sourced from datasets licensed under a Creative Common's Attribution-NonCommercial 4.0 International License

Name	Target Sequence	Pharmacological Action	Actions
Flavin reductase (NADPH)	MAVKKIAIFGATGQTGLTTLAQAVQAGYEVTVLVRDSSRLPSEGPRPAHV...	unknown
2-Hydroxyacid oxidase 1	MLPRLICINDYEQHAKSVLPKSIYDYYRSGANDEETLADNIAAFSRWKLY...	unknown
Pyridoxine-5'-phosphate oxidase	MTCWLRGVTATFGRPAEWPGYLSHLCGRSAAMDLGPMRKSYRGDREAFEE...	unknown
Major NAD(P)H-flavin oxidoreductase	MTHPIIHDLENRYTSKKYDPSKKVSQEDLAVLLEALRLSASSINSQPWKF...	unknown
Riboflavin kinase	MRHLPYFCRGQVVRGFGRGSKQLGIPTANFPEQVVDNLPADISTGIYYGW...	unknown
Oxygen-insensitive NADPH nitroreductase	MTPTIELICGHRSIRHFTDEPISEAQREAIINSARATSSSSFLQCSSIIR...	unknown
Nitric oxide synthase 1	MEDHMFGVQQIQPNVISVRLFKRKVGGLGFLVKERVSKPPVIISDLIRGG...	unknown
Dihydroorotate dehydrogenase (quinone)	MYYPFVRKALFQLDPERAHEFTFQQLRRITGTPFEALVRQKVPAKPVNCM...	unknown
Dihydropyrimidine dehydrogenase [NADP(+)]	MAPVLSKDSADIESILALNPRTQTHATLCSTSAKKLDKKHWKRNPDKNCF...	unknown
Dihydroorotate dehydrogenase (quinone), mitochondrial	MAWRHLKKRAQDAVIILGGGGLLFASYLMATGDERFYAEHLMPTLQGLLD...	unknown
Flavodoxin	MKIVYWSGTGNTEKMAELIAKGIIESGKDVNTINVSDVNIDELLNEDILI...	unknown
Oxygen-insensitive NAD(P)H nitroreductase	MDIISVALKRHSTKAFDASKKLTPEQAEQIKTLLQYSPSSTNSQPWHFIV...	unknown
Chorismate synthase	MRYLTAGESHGPRLTAIIEGIPAGLPLTAEDINEDLRRRQGGYGRGGRMK...	unknown
2,4-dienoyl-CoA reductase [(2E)-enoyl-CoA-producing]	MSYPSLFAPLDLGFTTLKNRVLMGSMHTGLEEYPDGAERLAAFYAERARH...	unknown
Dihydroorotate dehydrogenase A (fumarate)	MLNTTFANAKFANPFMNASGVHCMTIEDLEELKASQAGAYITKSSTLEKR...	unknown
Pyridoxine/pyridoxamine 5'-phosphate oxidase	MSDNDELQQIAHLRREYTKGGLRRRDLPADPLTLFERWLSQACEAKLADP...	unknown
Pentaerythritol tetranitrate reductase	MSAEKLFTPLKVGAVTAPNRVFMAPLTRLRSIEPGDIPTPLMGEYYRQRA...	unknown
FMN-dependent NADH:quinone oxidoreductase	MSKVLVLKSSILAGYSQSGQLTDYFIEQWREKHVADEITVRDLAANPVPV...	unknown
Epidermin decarboxylase	MYGKLLICATASINVININHYIVELKQHFDEVNILFSPSSKNFINTDVLK...	unknown
FMN-dependent NADH:quinone oxidoreductase	MSKVLVLKSSILAGYSQSNQLSDYFVEQWREKHSADEITVRDLAANPIPV...	unknown
Chorismate synthase	MNTLGRFLRLTTFGESHGDVIGGVLDGMPSGIKIDYALLENEMKRRQGGR...	unknown
Flavodoxin	MSKKIGLFYGTQTGKTESVAEIIRDEFGNDVVTLHDVSQAEVTDLNDYQY...	unknown
Flavodoxin	MPKALIVYGSTTGNTEYTAETIARELADAGYEVDSRDAASVEAGGLFEGF...	unknown
Flavodoxin	MAKIGLFYGTQTGVTQTIAESIQQEFGGESIVDLNDIANADASDLNAYDY...	unknown
Nitroreductase domain-containing protein	MSNFLDLQKQRRSIYALGKTVDLSKAELVALIQNAIKQAPSAFNSQTSRA...	unknown
N-acetyl-S-alkylcysteine sulfoxide monooxygenase	MTRADFIQFGAMIHGVGGTTDGWRHPDVDPSASTNIEFYMKKAQTAEKGL...	unknown
tRNA-dihydrouridine synthase	MEVKVGLAPMAGYTDSAFRTLAFEWGADFAFSEMVSAKGFLMNSQKTEEL...	unknown
Protein NrdI	MVQIIFDSKTGNVQRFVNKTGFQQIRKVDEMDHVDTPFVLVTYTTNFGQV...	unknown
Probable UbiX-like flavin prenyltransferase	MKLIVGMTGATGAPLGVALLQALREMPNVETHLVMSKWAKTTIELETPYS...	unknown
(S)-mandelate dehydrogenase	MSQNLFNVEDYRKLRQKRLPKMVYDYLEGGAEDEYGVKHNRDVFQQWRFK...	unknown
FMN-dependent NADPH-azoreductase	MNMLVINGTPRKHGRTRIAASYIAALYHTDLIDLSEFVLPVFNGEAEQSE...	unknown
Flavodoxin	MGKIGIFFGTDSGNAEAIAEKISKAIGNAEVIDVAKASKEQFNGFTKVIL...	unknown
Serine/threonine-protein kinase Sgk1	MTVKTEAAKGTLTYSRMRGMVAILIAFMKQRRMGLNDFIQKIANNSYACK...	unknown
Oxygen-insensitive NAD(P)H nitroreductase	MDIISVALKRHSTKAFDASKKLTAEEAEKIKTLLQYSPSSTNSQPWHFIV...	unknown
Nitric oxide reductase	MSQPVAITDGIYWVGAVDWNIRYFHGPAFSTHRGTTYNAYLIVDDKTALV...	unknown
Isopentenyl-diphosphate delta-isomerase	MNIRERKRKHLEACLEGEVAYQKTTTGLEGFRLRYQALAGLALGEVDLTT...	unknown
Trimethylamine dehydrogenase	MARDPKHDILFEPIQIGPKTLRNRFYQVPHCIGAGSDKPGFQSAHRSVKA...	unknown
Rubredoxin-oxygen oxidoreductase	MQATKIIDGFHLVGAIDWNSRDFHGYTLSPMGTTYNAYLVEDEKTTLFDT...	unknown
Riboflavin biosynthesis protein	MVVSIGVFDGVHIGHQKVLRTMKEIAFFRKDDSLIYTISYPPEYFLPDFP...	unknown
Morphinone reductase	MPDTSFSNPGLFTPLQLGSLSLPNRVIMAPLTRSRTPDSVPGRLQQIYYG...	unknown
NADPH-flavin oxidoreductase	MNNTIETILAHRSIRKFTAVPITDEQRQTIIQAGLAASSSSMLQVVSIVR...	unknown
Ribosomal protein S6 kinase alpha-4	MGDEDDDESCAVELRITEANLTGHEEKVSVENFELLKVLGTGAYGKVFLV...	unknown
Dihydrophenazinedicarboxylate synthase	MNGSIQGKPLLGKGMSESLTGTLDAPFPEYQTLPADPMSVLHNWLERARR...	unknown
2-Hydroxyacid oxidase 2	MSLVCLTDFQAHAREQLSKSTRDFIEGGADDSITRDDNIAAFKRIRLRPR...	unknown
NAD(P)H dehydrogenase (quinone)	MTAPVKLAIVFYSSTGTGYAMAQEAAEAGRAAGAEVRLLKVRETAPQDVI...	unknown
Flavodoxin 1	MAITGIFFGSDTGNTENIAKMIQKQLGKDVADVHDIAKSSKEDLEAYDIL...	unknown
Isopentenyl-diphosphate delta-isomerase	MTRAERKRQHINHALSIGQKRETGLDDITFVHVSLPDLALEQVDISTKIG...	unknown
NADH dehydrogenase	MEATLPVLDAKTAALKRRSIRRYRKDPVPEGLLREILEAALRAPSAWNLQ...	unknown
FMN-binding protein	MLPGTFFEVLKNEGVVAIATQGEDGPHLVNTWNSYLKVLDGNRIVVPVGG...	unknown
Nitroreductase family protein	MSATTTNLKEAIVNRRSIRKVTKNDAITKERIEEVLKTALHAPTSFNMQS...	unknown
NADPH--cytochrome P450 reductase	MGDSHVDTSSTVSEAVAEEVSLFSMTDMILFSLIVGLLTYWFLFRKKKEE...	unknown
Phosphopantothenoylcysteine decarboxylase	MEPKASCPAAAPLMERKFHVLVGVTGSVAALKLPLLVSKLLDIPGLEVAV...	unknown
PhzG	MGVNANISESLTGTIEAPFPEFEAPPANPMEVLRNWLERARRYGVREPRA...	unknown
Ferredoxin-dependent glutamate synthase 2	MSFQYPLLAPMTNSSVATNSNQPFLGQPWLVEERDACGVGFIANLRGKPD...	unknown
FAD synthase	MGWDLGTRLFQRQEQRSRLSRIWLEKTRVFLEGSTRTPALPHCLFWLLQV...	unknown	substrate
NADPH--cytochrome P450 reductase	MGDSHVDTSSTVSEAVAEEVSLFSMTDMILFSLIVGLLTYWFLFRKKKEE...	unknown	ligand
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Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS. Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID:21059682