Last updated
Clinical data
Other names(3S)-3-[[(2S)-6-amino-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]hexanoyl]amino]-4-[[(2S)-1-[[(2S)-1-hydroxy-3-(4-hydroxyphenyl)-1-oxopropan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-4-oxobutanoic acid
ATC code
  • L-arginyl-L-lysyl-L-α-aspartyl-L-valyl-L-tyrosine
CAS Number
PubChem CID
CompTox Dashboard (EPA)
ECHA InfoCard 100.242.320 OOjs UI icon edit-ltr-progressive.svg
Chemical and physical data
Formula C30H49N9O9
Molar mass 679.776 g·mol−1
3D model (JSmol)
  • O=C(N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)O)Cc1ccc(O)cc1)C(C)C)CC(=O)O)CCCCN)[C@@H](N)CCC/N=C(\N)N
  • InChI=1S/C30H49N9O9/c1-16(2)24(28(46)38-22(29(47)48)14-17-8-10-18(40)11-9-17)39-27(45)21(15-23(41)42)37-26(44)20(7-3-4-12-31)36-25(43)19(32)6-5-13-35-30(33)34/h8-11,16,19-22,24,40H,3-7,12-15,31-32H2,1-2H3,(H,36,43)(H,37,44)(H,38,46)(H,39,45)(H,41,42)(H,47,48)(H4,33,34,35)/t19-,20-,21-,22-,24-/m0/s1 Yes check.svgY

Thymopentin is an immunostimulant. As such, it has been used in several clinical studies in the early years of the AIDS pandemic (from 1983 to 1985). Thymopentin helped to improve immunological condition in several patients for a brief time under specific treatments. [1] [2] [3]

It interacts with T cells. [4]

It is a thymic polypeptide. [5]

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  1. Mascart-Lemone F, Huygen K, Clumeck N, Brenez D, Bolla K, Duchateau J (1983). "Stimulation of cellular function by thymopentin (TP-5) in three AIDS patients". Lancet. 322 (8352): 735–736. doi:10.1016/S0140-6736(83)92271-7. PMID   6193382. S2CID   519367.
  2. Clumeck N, Van de Perre P, Mascart-Lemone F, Cran S, Bolla K, Duchateau J (1984). "Preliminary results on clinical and immunological effects of thymopentin in AIDS". Int J Clin Pharmacol Res. 4 (6): 459–463. PMID   6398315.
  3. Clumeck N, Cran S, Van de Perre P, Mascart-Lemone F, Duchateau J, Bolla K (1985). "Thymopentin treatment in AIDS and pre-AIDS patients". Surv Immunol Res. 4 (1): supp1 58–62. doi:10.1007/BF02919057 (inactive 31 May 2021). PMID   3898293.CS1 maint: DOI inactive as of May 2021 (link)
  4. Liu Z, Zheng X, Wang J, Wang E (2007). Egli M (ed.). "Molecular analysis of thymopentin binding to HLA-DR molecules". PLOS ONE. 2 (12): e1348. Bibcode:2007PLoSO...2.1348L. doi:10.1371/journal.pone.0001348. PMC   2137936 . PMID   18159232. Open Access logo PLoS transparent.svg
  5. Peng Y, Chen Z, Yu W, et al. (July 2008). "Effects of thymic polypeptides on the thymopoiesis of mouse embryonic stem cells". Cell Biology International. 32 (10): 1265–71. doi:10.1016/j.cellbi.2008.07.011. PMID   18692582. S2CID   24144448.