| Version |
2.5 |
| Creation Date |
2005-06-13 13:24:05 |
| Update Date |
2009-10-05 18:30:01 |
| Primary Accession Number |
DB00745 |
| Secondary Accession Number |
|
| Name |
Modafinil |
| Drug Type |
- Approved
- Investigational
- Small Molecule
|
| Description |
Modafinil is a stimulant drug marketed as a 'wakefulness promoting agent' and is one of the stimulants used in the treatment of narcolepsy. Narcolepsy is caused by dysfunction of a family of wakefulness-promoting and sleep-suppressing peptides, the orexins, whose neurons are activated by modafinil. The prexin neuron activation is associated with psychoactivation and euphoria. The exact mechanism of action is unclear, although in vitro studies have shown it to inhibit the reuptake of dopamine by binding to the dopamine reuptake pump, and lead to an increase in extracellular dopamine. Modafinil activates glutamatergic circuits while inhibiting GABA. |
| Synonyms |
- Modafinil [USAN:INN]
- Modafinilo [Spanish]
- Modafinilum [Latin]
- Moderateafinil
|
| Brand Names |
- Modiodal
- Provigil
- Sparlon
|
| Brand Mixtures |
Not Available |
| Chemical IUPAC Name |
2-[di(phenyl)methylsulfinyl]acetamide |
| Chemical Formula |
C15H15NO2S |
| Chemical Structure |
 |
| CAS Registry Number |
68693-11-8 |
| InChI Identifier |
InChI=1/C15H15NO2S/c16-14(17)11-19(18)15(12-7-3-1-4-8-12)13-9-5-2-6-10-13/h1-10,15H,11H2,(H2,16,17)/f/h16H2 |
| InChI Key |
YFGHCGITMMYXAQ-ZHLVXTBQCM |
| KEGG Drug |
D01832  |
| KEGG Compound |
Not Available |
| PubChem Compound |
4236  |
| PubChem Substance |
188735  |
| ChEBI ID |
Not Available |
| PharmGKB ID |
PA450530  |
| HET ID |
Not Available |
| GenBank ID |
Not Available |
| Drug ID Number [DIN] |
02239665  |
| RxList Link |
http://www.rxlist.com/cgi/generic2/modafinil.htm  |
| PDRhealth Link |
http://www.pdrhealth.com/drugs/rx/rx-mono.aspx?contentFileName=pro1544.html&contentName=Provigil&contentId=631  |
| Wikipedia Link |
http://en.wikipedia.org/wiki/Modafinil  |
| FDA Label |
|
| Material Safety Data Sheet (MSDS) |
|
| Synthesis Reference |
L. Lafon, U.S. pat. 4,927,855, (1990) |
| Average Molecular Weight |
273.3500 |
| Monoisotopic Molecular Weight |
273.0823 |
| State |
Solid |
| Melting Point |
164-166 oC |
| Experimental Water Solubility |
Slightly soluble
Source: PhysProp
|
| Predicted Water Solubility |
6.22e-01 mg/mL
Calculated using ALOGPS
|
| Experimental LogP/Hydrophobicity |
0.6
Source: PhysProp
|
| Predicted LogP |
1.75
Calculated using ALOGPS
|
| Experimental LogS |
Not Available |
| Predicted LogS |
-2.64
Calculated using ALOGPS
|
| Experimental Caco2 Permeability |
Not Available |
| pKa/Isoelectric Point |
Not Available |
| Mass Spectrum |
Not Available
|
| MOL File |
Show | Download  |
| SDF File |
Show | Download  |
| PDB File |
Show | Download  |
| 2D Structure |
|
| 3D Structure |
|
| Experimental PDB ID |
Not Available |
| Isomeric SMILES |
NC(=O)C[S@@](=O)C(C1=CC=CC=C1)C1=CC=CC=C1 |
| Canonical SMILES |
NC(=O)CS(=O)C(C1=CC=CC=C1)C1=CC=CC=C1 |
| Drug Category |
- Anorexigenic Agents
- Central Nervous System Agents
- Central Nervous System Stimulants
- Neuroprotective Agents
- Stimulants
|
| ATC Codes |
|
| AHFS Codes |
|
| Indication |
To improve wakefulness in patients with excessive daytime sleepiness (EDS) associated with narcolepsy. |
| Pharmacology |
Modafinil is a stimulant drug marketed as a 'wakefulness promoting agent' and is one of the stimulants used in the treatment of narcolepsy. Narcolepsy is caused by dysfunction of a family of wakefulness-promoting and sleep-suppressing peptides, the orexins, whose neurons are activated by modafinil. The prexin neuron activation is associated with psychoactivation and euphoria. Modafinil is not indicated for complaints of lack of energy or fatigue; but it appears to be very helpful for some patients. Also, it has been used in the treatment of hypersomnia, a disorder in which patients lack the capacity for meaningful sleep and may require ten or more hours per day. Recent studies have have found that modafinil may help recovering cocaine addicts fight their addiction. |
| Mechanism of Action |
The exact mechanism of action is unclear, although in vitro studies have shown it to inhibit the reuptake of dopamine by binding to the dopamine reuptake pump, and lead to an increase in extracellular dopamine. Modafinil activates glutamatergic circuits while inhibiting GABA. Modafinil is thought to have less potential for abuse than other stimulants due to the absence of any significant euphoric or pleasurable effects. It is possible that modafinil acts by a synergistic combination of mechanisms including direct inhibition of dopamine reuptake, indirect inhibition of noradrenalin reuptake in the VLPO and orexin activation. Modafinil has partial alpha 1B-adrenergic agonist effects by directly stimulating the receptors. |
| Absorption |
Rapid following oral administration. |
| Toxicity |
Not Available |
| Protein Binding |
60% |
| Biotransformation |
Hepatic |
| Half Life |
23-215 hours |
| Dosage Forms |
|
| Patient Information |
Show  |
| Contraindications |
Show  |
| Interactions |
Show  |
| Drug Interactions |
| Drug |
Interaction |
| Clozapine |
Modafinil increases the effect and toxicity of clozapine |
| Cyclosporine |
Modafinil decreases the effect of cyclosporine |
| Ethinyl Estradiol |
Modafinil decreases the effect of the contraceptive |
| Mestranol |
Modafinil decreases the effect of the contraceptive |
| Triazolam |
Modafinil decreases the effect of triazolam |
|
| Food Interactions |
- Take without regard to meals.
|
| Pathways |
Not Available
|
| General References |
- Ishizuka T, Sakamoto Y, Sakurai T, Yamatodani A: Modafinil increases histamine release in the anterior hypothalamus of rats. Neurosci Lett. 2003 Mar 20;339(2):143-6. [PubMed
]
- Lindsay SE, Gudelsky GA, Heaton PC: Use of modafinil for the treatment of attention deficit/hyperactivity disorder. Ann Pharmacother. 2006 Oct;40(10):1829-33. Epub 2006 Sep 5. [PubMed
]
- Drugs.com

- Wikipedia

- RxList

- PDRhealth

|
| Organisms Affected |
|
| Phase 1 Metabolizing Enzymes |
- Catechol O-methyltransferase (COMT)
- Cytochrome P450 2C19 (CYP2C19)
- Cytochrome P450 3A4 (CYP3A4)
|
| Targets |
- Alpha-1B adrenergic receptor
- Sodium-dependent dopamine transporter
|
|
Drug Target 1
[top]
|
| Target 1 ID |
632 |
| Target 1 Name |
Alpha-1B adrenergic receptor |
| Target 1 Synonyms |
- Alpha 1B- adrenoreceptor
- Alpha 1B-adrenoceptor
|
| Target 1 Gene Name |
ADRA1B |
| Target 1 Protein Sequence |
>Alpha-1B adrenergic receptor
MNPDLDTGHNTSAPAHWGELKNANFTGPNQTSSNSTLPQLDITRAISVGLVLGAFILFAI
VGNILVILSVACNRHLRTPTNYFIVNLAMADLLLSFTVLPFSAALEVLGYWVLGRIFCDI
WAAVDVLCCTASILSLCAISIDRYIGVRYSLQYPTLVTRRKAILALLSVWVLSTVISIGP
LLGWKEPAPNDDKECGVTEEPFYALFSSLGSFYIPLAVILVMYCRVYIVAKRTTKNLEAG
VMKEMSNSKELTLRIHSKNFHEDTLSSTKAKGHNPRSSIAVKLFKFSREKKAAKTLGIVV
GMFILCWLPFFIALPLGSLFSTLKPPDAVFKVVFWLGYFNSCLNPIIYPCSSKEFKRAFV
RILGCQCRGRGRRRRRRRRRLGGCAYTYRPWTRGGSLERSQSRKDSLDDSGSCLSGSQRT
LPSASPSPGYLGRGAPPPVELCAFPEWKAPGALLSLPAPEPPGRRGRHDSGPLFTFKLLT
EPESPGTDGGASNGGCEAAADVANGQPGFKSNMPLAPGQF
|
| Target 1 Number of Residues |
528 |
| Target 1 Molecular Weight |
56837 |
| Target 1 Theoretical pI |
9.79 |
| Target 1 GO Classification |
|
Function
|
signal transducer activity
receptor activity
transmembrane receptor activity
G-protein coupled receptor activity
rhodopsin-like receptor activity
amine receptor activity
adrenoceptor activity
alpha-adrenergic receptor activity
alpha1-adrenergic receptor activity |
|
Process
|
cellular process
cell communication
signal transduction
cell surface receptor linked signal transduction
G-protein coupled receptor protein signaling pathway |
|
Component
|
cell
membrane
intrinsic to membrane
integral to membrane |
|
| Target 1 General Function |
Involved in alpha1-adrenergic receptor activity |
| Target 1 Specific Function |
This alpha-adrenergic receptor mediates its action by association with G proteins that activate a phosphatidylinositol- calcium second messenger system |
| Target 1 Pathways |
Not Available
|
| Target 1 Reactions |
Not Available |
| Target 1 Pfam Domain Function |
|
| Target 1 Signals |
|
| Target 1 Transmembrane Regions |
- 46-70
- 84-105
- 116-141
- 162-182
- 202-224
- 296-319
- 327-340
|
| Target 1 Essentiality |
Non-Essential |
| Target 1 GenBank ID Protein |
Not Available |
| Target 1 UniProtKB/Swiss-Prot ID |
P35368  |
| Target 1 UniProtKB/Swiss-Prot Entry Name |
ADA1B_HUMAN  |
| Target 1 PDB ID |
Not Available |
| Target 1 Cellular Location |
- Membrane
- multi-pass membrane protein
|
| Target 1 Gene Sequence |
Not Available |
| Target 1 GenBank Gene ID |
|
| Target 1 GeneCard ID |
ADRA1B  |
| Target 1 GenAtlas ID |
ADRA1B  |
| Target 1 HGNC ID |
HGNC:278  |
| Target 1 Chromosome Location |
5 |
| Target 1 Locus |
5q23-q32 |
| Target 1 SNPs |
SNPJam Report  |
| Target 1 General References |
- Ramarao CS, Denker JM, Perez DM, Gaivin RJ, Riek RP, Graham RM: Genomic organization and expression of the human alpha 1B-adrenergic receptor. J Biol Chem. 1992 Oct 25;267(30):21936-45. [PubMed
]
- Schwinn DA, Johnston GI, Page SO, Mosley MJ, Wilson KH, Worman NP, Campbell S, Fidock MD, Furness LM, Parry-Smith DJ, et al.: Cloning and pharmacological characterization of human alpha-1 adrenergic receptors: sequence corrections and direct comparison with other species homologues. J Pharmacol Exp Ther. 1995 Jan;272(1):134-42. [PubMed
]
- Forray C, Bard JA, Wetzel JM, Chiu G, Shapiro E, Tang R, Lepor H, Hartig PR, Weinshank RL, Branchek TA, et al.: The alpha 1-adrenergic receptor that mediates smooth muscle contraction in human prostate has the pharmacological properties of the cloned human alpha 1c subtype. Mol Pharmacol. 1994 Apr;45(4):703-8. [PubMed
]
|
| Target 1 Drug References |
- Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. [PubMed
]
- Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. [PubMed
]
|
|
Drug Target 2
[top]
|
| Target 2 ID |
713 |
| Target 2 Name |
Sodium-dependent dopamine transporter |
| Target 2 Synonyms |
- DA transporter
- DAT
|
| Target 2 Gene Name |
SLC6A3 |
| Target 2 Protein Sequence |
>Sodium-dependent dopamine transporter
MSKSKCSVGLMSSVVAPAKEPNAVGPKEVELILVKEQNGVQLTSSTLTNPRQSPVEAQDR
ETWGKKIDFLLSVIGFAVDLANVWRFPYLCYKNGGGAFLVPYLLFMVIAGMPLFYMELAL
GQFNREGAAGVWKICPILKGVGFTVILISLYVGFFYNVIIAWALHYLFSSFTTELPWIHC
NNSWNSPNCSDAHPGDSSGDSSGLNDTFGTTPAAEYFERGVLHLHQSHGIDDLGPPRWQL
TACLVLVIVLLYFSLWKGVKTSGKVVWITATMPYVVLTALLLRGVTLPGAIDGIRAYLSV
DFYRLCEASVWIDAATQVCFSLGVGFGVLIAFSSYNKFTNNCYRDAIVTTSINSLTSFSS
GFVVFSFLGYMAQKHSVPIGDVAKDGPGLIFIIYPEAIATLPLSSAWAVVFFIMLLTLGI
DSAMGGMESVITGLIDEFQLLHRHRELFTLFIVLATFLLSLFCVTNGGIYVFTLLDHFAA
GTSILFGVLIEAIGVAWFYGVGQFSDDIQQMTGQRPSLYWRLCWKLVSPCFLLFVVVVSI
VTFRPPHYGAYIFPDWANALGWVIATSSMAMVPIYAAYKFCSLPGSFREKLAYAIAPEKD
RELVDRGEVRQFTLRHWLKV
|
| Target 2 Number of Residues |
630 |
| Target 2 Molecular Weight |
68496 |
| Target 2 Theoretical pI |
6.92 |
| Target 2 GO Classification |
|
Function
|
transporter activity
neurotransmitter transporter activity
neurotransmitter:sodium symporter activity
dopamine:sodium symporter activity |
|
Process
|
physiological process
cellular physiological process
transport
neurotransmitter transport |
|
Component
|
cell
membrane
intrinsic to membrane
integral to membrane
integral to plasma membrane |
|
| Target 2 General Function |
Involved in dopamine:sodium symporter activity |
| Target 2 Specific Function |
Amine transporter. Terminates the action of dopamine by its high affinity sodium-dependent reuptake into presynaptic terminals |
| Target 2 Pathways |
Not Available
|
| Target 2 Reactions |
Not Available |
| Target 2 Pfam Domain Function |
|
| Target 2 Signals |
|
| Target 2 Transmembrane Regions |
- 69-89
- 96-116
- 140-160
- 238-256
- 265-282
- 318-335
- 347-368
- 401-420
- 447-465
- 481-501
- 522-541
- 560-578
|
| Target 2 Essentiality |
Non-Essential |
| Target 2 GenBank ID Protein |
553260  |
| Target 2 UniProtKB/Swiss-Prot ID |
Q01959  |
| Target 2 UniProtKB/Swiss-Prot Entry Name |
SC6A3_HUMAN  |
| Target 2 PDB ID |
Not Available |
| Target 2 Cellular Location |
- Membrane
- multi-pass membrane protein
|
| Target 2 Gene Sequence |
>1863 bp
ATGAGTAAGAGCAAATGCTCCGTGGGACTCATGTCTTCCGTGGTGGCCCCGGCTAAGGAG
CCCAATGCCGTGGGCCCGAAGGAGGTGGAGCTCATCCTTGTCAAGGAGCAGAACGGAGTG
CAGCTCACCAGCTCCACCCTCACCAACCCGCGGCAGAGCCCCGTGGAGGCCCAGGATCGG
GAGACCTGGGGCAAGAAGATCGACTTTCTCCTGTCCGTCATTGGCTTTGCTGTGGACCTG
GCCAACGTCTGGCGGTTCCCCTACCTGTGCTACAAAAATGGTGGCGGTGCCTTCCTGGTC
CCCTACCTGCTCTTCATGGTCATTGCTGGGATGCCACTTTTCTACATGGAGCTGGCCCTC
GGCCAGTTCAACAGGGAAGGGGCCGCTGGTGTCTGGAAGATCTGCCCCATACTGAAAGGT
GTGGGCTTCACGGTCATCCTCATCTCACTGTATGTCGGCTTCTTCTACAACGTCATCATC
GCCTGGGCGCTGCACTATCTCTTCTCCTCCTTCACCACGGAGCTCCCCTGGATCCACTGC
AACAACTCCTGGAACAGCCCCAACTGCTCGGATGCCCATCCTGGTGACTCCAGTGGAGAC
AGCTCGGGCCTCAACGACACTTTTGGGACCACACCTGCTGCCGAGTACTTTGAACGTGGC
GTGCTGCACCTCCACCAGAGCCATGGCATCGACGACCTGGGGCCTCCGCGGTGGCAGCTC
ACAGCCTGCCTGGTGCTGGTCATCGTGCTGCTCTACTTCAGCCTCTGGAAGGGCGTGAAG
ACCTCAGGGAAGGTGGTATGGATCACAGCCACCATGCCATACGTGGTCCTCACTGCCCTG
CTCCTGCGTGGGGTCACCCTCCCTGGAGCCATAGACGGCATCAGAGCATACCTGAGCGTT
GACTTCTACCGGCTCTGCGAGGCGTCTGTTTGGATTGACGCGGCCACCCAGGTGTGCTTC
TCCCTGGGCGTGGGGTTCGGGGTGCTGATCGCCTTCTCCAGCTACAACAAGTTCACCAAC
AACTGCTACAGGGACGCGATTGTCACCACCTCCATCAACTCCCTGACGAGCTTCTCCTCC
GGCTTCGTCGTCTTCTCCTTCCTGGGGTACATGGCACAGAAGCACAGTGTGCCCATCGGG
GACGTGGCCAAGGACGGGCCAGGGCTGATCTTCATCATCTACCCGGAAGCCATCGCCACG
CTCCCTCTGTCCTCAGCCTGGGCCGTGGTCTTCTTCATCATGCTGCTCACCCTGGGTATC
GACAGCGCCATGGGTGGTATGGAGTCAGTGATCACCGGGCTCATCGATGAGTTCCAGCTG
CTGCACAGACACCGTGAGCTCTTCACGCTCTTCATCGTCCTGGCGACCTTCCTCCTGTCC
CTGTTCTGCGTCACCAACGGTGGCATCTACGTCTTCACGCTCCTGGACCATTTTGCAGCC
GGCACGTCCATCCTCTTTGGAGTGCTCATCGAAGCCATCGGAGTGGCCTGGTTCTATGGT
GTTGGGCAGTTCAGCGACGACATCCAGCAGATGACCGGGCAGCGGCCCAGCCTGTACTGG
CGGCTGTGCTGGAAGCTGGTCAGCCCCTGCTTTCTCCTGTTCGTGGTCGTGGTCAGCATT
GTGACCTTCAGACCCCCCCACTACGGAGCCTACATCTTCCCCGACTGGGCCAACGCGCTG
GGCTGGGTCATCGCCACATCCTCCATGGCCATGGTGCCCATCTATGCGGCCTACAAGTTC
TGCAGCCTGCCTGGGTCCTTTCGAGAGAAACTGGCCTACGCCATTGCACCCGAGAAGGAC
CGTGAGCTGGTGGACAGAGGGGAGGTGCGCCAGTTCACGCTCCGCCACTGGCTCAAGGTG
TAG
|
| Target 2 GenBank Gene ID |
|
| Target 2 GeneCard ID |
SLC6A3  |
| Target 2 GenAtlas ID |
SLC6A3  |
| Target 2 HGNC ID |
HGNC:11049  |
| Target 2 Chromosome Location |
5 |
| Target 2 Locus |
5p15.3 |
| Target 2 SNPs |
SNPJam Report  |
| Target 2 General References |
- Cargill M, Altshuler D, Ireland J, Sklar P, Ardlie K, Patil N, Shaw N, Lane CR, Lim EP, Kalyanaraman N, Nemesh J, Ziaugra L, Friedland L, Rolfe A, Warrington J, Lipshutz R, Daley GQ, Lander ES: Characterization of single-nucleotide polymorphisms in coding regions of human genes. Nat Genet. 1999 Jul;22(3):231-8. [PubMed
]
- Vandenbergh DJ, Thompson MD, Cook EH, Bendahhou E, Nguyen T, Krasowski MD, Zarrabian D, Comings D, Sellers EM, Tyndale RF, George SR, O'Dowd BF, Uhl GR: Human dopamine transporter gene: coding region conservation among normal, Tourette's disorder, alcohol dependence and attention-deficit hyperactivity disorder populations. Mol Psychiatry. 2000 May;5(3):283-92. [PubMed
]
- Greenwood TA, Alexander M, Keck PE, McElroy S, Sadovnick AD, Remick RA, Kelsoe JR: Evidence for linkage disequilibrium between the dopamine transporter and bipolar disorder. Am J Med Genet. 2001 Mar 8;105(2):145-51. [PubMed
]
- Torres GE, Yao WD, Mohn AR, Quan H, Kim KM, Levey AI, Staudinger J, Caron MG: Functional interaction between monoamine plasma membrane transporters and the synaptic PDZ domain-containing protein PICK1. Neuron. 2001 Apr;30(1):121-34. [PubMed
]
- Bannon MJ, Poosch MS, Xia Y, Goebel DJ, Cassin B, Kapatos G: Dopamine transporter mRNA content in human substantia nigra decreases precipitously with age. Proc Natl Acad Sci U S A. 1992 Aug 1;89(15):7095-9. [PubMed
]
- Vandenbergh DJ, Persico AM, Uhl GR: A human dopamine transporter cDNA predicts reduced glycosylation, displays a novel repetitive element and provides racially-dimorphic TaqI RFLPs. Brain Res Mol Brain Res. 1992 Sep;15(1-2):161-6. [PubMed
]
- Giros B, el Mestikawy S, Godinot N, Zheng K, Han H, Yang-Feng T, Caron MG: Cloning, pharmacological characterization, and chromosome assignment of the human dopamine transporter. Mol Pharmacol. 1992 Sep;42(3):383-90. [PubMed
]
- Donovan DM, Vandenbergh DJ, Perry MP, Bird GS, Ingersoll R, Nanthakumar E, Uhl GR: Human and mouse dopamine transporter genes: conservation of 5'-flanking sequence elements and gene structures. Brain Res Mol Brain Res. 1995 Jun;30(2):327-35. [PubMed
]
- Pristupa ZB, Wilson JM, Hoffman BJ, Kish SJ, Niznik HB: Pharmacological heterogeneity of the cloned and native human dopamine transporter: disassociation of [3H]WIN 35,428 and [3H]GBR 12,935 binding. Mol Pharmacol. 1994 Jan;45(1):125-35. [PubMed
]
- Kawarai T, Kawakami H, Yamamura Y, Nakamura S: Structure and organization of the gene encoding human dopamine transporter. Gene. 1997 Aug 11;195(1):11-8. [PubMed
]
|
| Target 2 Drug References |
- Wisor JP, Nishino S, Sora I, Uhl GH, Mignot E, Edgar DM: Dopaminergic role in stimulant-induced wakefulness. J Neurosci. 2001 Mar 1;21(5):1787-94. [PubMed
]
- Swanson JM: Role of executive function in ADHD. J Clin Psychiatry. 2003;64 Suppl 14:35-9. [PubMed
]
- Zhou J, He R, Johnson KM, Ye Y, Kozikowski AP: Piperidine-based nocaine/modafinil hybrid ligands as highly potent monoamine transporter inhibitors: efficient drug discovery by rational lead hybridization. J Med Chem. 2004 Nov 18;47(24):5821-4. [PubMed
]
- Madras BK, Xie Z, Lin Z, Jassen A, Panas H, Lynch L, Johnson R, Livni E, Spencer TJ, Bonab AA, Miller GM, Fischman AJ: Modafinil occupies dopamine and norepinephrine transporters in vivo and modulates the transporters and trace amine activity in vitro. J Pharmacol Exp Ther. 2006 Nov;319(2):561-9. Epub 2006 Aug 2. [PubMed
]
- Dopheide MM, Morgan RE, Rodvelt KR, Schachtman TR, Miller DK: Modafinil evokes striatal [(3)H]dopamine release and alters the subjective properties of stimulants. Eur J Pharmacol. 2007 Jul 30;568(1-3):112-23. Epub 2007 Apr 5. [PubMed
]
|