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Ansamitocin P-3 (Antibiotic C 15003P3′; Maytansinol butyrate)

This product is for research use only, not for human use. We do not sell to patients.

Ansamitocin P-3 (Antibiotic C 15003P3′; Maytansinol butyrate)
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Size Price Stock
250mg$950Check With Us
500mg$1450Check With Us
1g$2175Check With Us

Cat #: V29720 CAS #: 66584-72-3 Purity ≥ 99%

Description: Ansamitocin P-3 (Maytansinol isobutyrate; NSC-292222; Antibiotic C 15003P3) is a potent microtubule/antimitotic inhibitor used as an warhead of ADC (antibody drug conjugate).

References: Venghateri JB, et al. Ansamitocin P3 depolymerizes microtubules and induces apoptosis by binding to tubulin at thevinblastine site. PLoS One. 2013 Oct 4;8( 10):e75182.

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Molecular Weight (MW)635.14
Molecular FormulaC32H43ClN2O9
CAS No.66584-72-3
ProtocolIn VitroAnsamitocin P-3 (Antibiotic C 15003P3) potently inhibits the proliferation of MCF-7, HeLa, EMT-6/AR1, and MDA-MB-231 cells in cultures at half-maximum inhibitory concentrations of 20±3, 50±0.5, 140±17, and 150±1.1 pM, respectively. In addition, Ansamitocin P3 was found to bind to purified tubulin in vitro, with a dissociation constant (Kd) is 1.3±0.7 μM. Binding of Ansamitocin P3 induces conformational changes in tubulin. Ansamitocin P3 inhibits the proliferation of MCF-7, HeLa, EMT-6/AR1, and MDA-MB-231 cells in cultures in a concentration-dependent manner. Flow cytometry analysis of PI-stained cells showed that Ansamitocin P3 inhibits cell cycle progression in G2/M phase MCF-7 cells. For example, in the absence and presence of 50 and 100 pM Ansamitocin P3, 26%, 50%, and 70% of cells are in the G2/M phase, respectively
These protocols are for reference only. InvivoChem does not independently validate these methods.
Preparing Stock Solutions
Solvent volume to be added Mass (the weight of a compound)
Mother liquor concentration 1mg5mg10mg20mg
1mM1.5745 mL7.8723 mL15.7446 mL31.4891 mL
5mM0.3149 mL1.5745 mL3.1489 mL6.2978 mL
10mM0.1574 mL0.7872 mL1.5745 mL3.1489 mL
20mM0.0787 mL0.3936 mL0.7872 mL1.5745 mL
The molarity calculator equation
Mass(g) = Concentration(mol/L) × Volume(L) × Molecular Weight(g/mol)
Mass
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Concentration
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Volume
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Molecular Weight*
The dilution calculator equation
Concentration(start) × Volume(start) = Concentration(final) × Volume(final)

This equation is commonly abbreviated as: C1 V1 = C2 V2

Concentration(start)
C1
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Volume(start)
V1
=
Concentration(final)
C2
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Volume(final)
V2
Step One: Enter information below
Dosage mg/kg Average weight of animals g Dosing volume per animal µL Number of animals
Step Two: Enter the in vivo formulation
%DMSO + % + %Tween 80 + %ddH2O

Calculation Results:
Working concentration: mg/ml;
Method for preparing DMSO master liquid: mg drug pre-dissolved in µL DMSO(Master liquid concentration mg/mL) ,Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation: Take µL DMSO master liquid, next add µL PEG300, mix and clarify, next add µL Tween 80,mix and clarify, next add µL ddH2O,mix and clarify.
Note:
  • (1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
  • (2) Be sure to add the solvent(s) in order.