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Ansamitocin P-3
Inhibitor of tublin spiralization,maytansine analog

Catalog No.A3183
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10mM (in 1mL DMSO)
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Sample solution is provided at 25 µL, 10mM.

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Chemical structure

Ansamitocin P-3

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Chemical Properties

Cas No. 66547-09-9 SDF Download SDF
Synonyms Antibiotic C 15003P3;Maytansinol butyrate;C15003P3
Chemical Name N/A
Canonical SMILES CCCC(O[C@@]([C@]1([C@@](O1)([H])[C@]([C@](O2)([H])C[C@](N=C2O)(O)[C@@](OC)([H])/C([H])=C([H])/C([H])=C(CC3=CC(N4C)=C(Cl)C(OC)=C3)\C)([H])C)C)([H])CC4=O)=O
Formula C32H43ClN2O9 M.Wt 635.14
Solubility ≥31.75 mg/mL in DMSO, ≥33.73 mg/mL in EtOH with ultrasonic and warming, <2.54 mg/mL in H2O Storage Store at -20°C
Physical Appearance A solid Shipping Condition Evaluation sample solution : ship with blue ice.All other available size: ship with RT , or blue ice upon request
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.


Ansamitocin P-3, a natural product, is maytansinoid which showed potent cytotoxicity against the human solid tumor cell lines A-549 and HT-29 with ED50 of 4 x 10 -7, 4 x 10 – 7 μg/ml, respectively. [1]
Cytotoxic agents remain an important strategy in chemotherapy. In an activity-directed isolation and identification, ansamitocin P-3 was obtained from the active methanol extracts of two mosses.
Furthermore, the compound showed great cytotoxicity against several tumor cells. [1]
Ansamitocin P-3 is a maytansinoid isolated in very low yield from two members of the moss family Thuidiaceae, Claopodium crispifolium (Hook.) Ren. & Card. and Anomodon attenuatus (Hedw.) Hueb. Further biological evaluation of ansainitocin P-3 showed potent cytotoxicity against the human solid tumor cell line systems A-549 lung carcinoma cells, HT-29 colon adenocarcinoma cells and MCF-7 breast adenocarcinoma cells at ED50 of 4 x 10 -7, 4 x 10 - 7, 2 x 10 -6 μg/ml. respectively. [2]
Ansamitocin P-3 exhibited inhibition of cilia regeneration of partially deciliated Tetrahymena. The regeneration of cilia in Tetrahymena was assayed by observing recovery of motility of the deciliated cells which are nonmotile after being deciliated. After 60 min of incubation, more than 95% of partially deciliated Tetrahymena cells in the recovery buffer were fully motile. Ansamitocin P-3 completely inhibited cilia regeneration of Tetrahymena at 1 μM. Moreover, recovery of motility of partially deciliated cells after release from inhibition by 2 μM ansamitocin P-3. [2]
[1]. Suwanborirux, K., et al. "Ansamitocin P-3, a maytansinoid, fromClaopodium crispifolium andAnomodon attenuatus or associated actinomycetes."Experientia 46.1 (1990): 117-120.
[2]. Tanida, Seiichi, Eiji Higashide, and Masahiko Yoneda. "Inhibition of cilia regeneration of Tetrahymena by ansamitocins, new antitumor antibiotics."Antimicrobial agents and chemotherapy 16.1 (1979): 101.