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  3. Macropa-NH2 hydrochloride

Macropa-NH2 hydrochloride is the precursor of Macropa-NCS. Macropa-NCS is conjugated to Anti-Human HER2 (HY-P9907) as well as to the prostate-specific membrane antigen-targeting compound RPS-070 and is a promising therapeutic radionuclide applied in the treatment of soft-tissue metastases.

For research use only. We do not sell to patients.

Macropa-NH2 hydrochloride Chemical Structure

Macropa-NH2 hydrochloride Chemical Structure

CAS No. : 2443966-86-5

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Based on 3 publication(s) in Google Scholar

Other Forms of Macropa-NH2 hydrochloride:

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  • Purity & Documentation

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Description

Macropa-NH2 hydrochloride is the precursor of Macropa-NCS. Macropa-NCS is conjugated to Anti-Human HER2 (HY-P9907) as well as to the prostate-specific membrane antigen-targeting compound RPS-070 and is a promising therapeutic radionuclide applied in the treatment of soft-tissue metastases[1].

In Vitro

A white suspension of 11•4TFA (0.1598 g, 0.16 mmol) and Na2CO3 (0.2540 g, 2.4 mmol) was heated at reflux in acetone (10 mL) for 30 min before the slow addition of CSCl2 (305 µL of CSCl2, 85%, Acros Organics). The resulting orange suspension was heated at reflux for 3 h and then concentrated at 30 °C under reduced pressure to a pale-orange solid. The solid was dissolved portionwise in 10% ACN/H2O containing 0.2% TFA (8 mL total), filtered, and immediately purified by preparative HPLC using Method C. Pure fractions were combined, concentrated at RT under reduced pressure to remove the organic solvent, and then lyophilized. Fractions that were not able to be concentrated immediately were frozen at -80 °C. Isothiocyanate 12 was obtained as a mixture of white and pale-yellow solid (0.0547 g) and was stored at –80 °C in a jar of Drierite. A stock solution containing 4.4 mg/mL of macropa-NCS was prepared in 0.1 M pH 9.1 NaHCO3 buffer containing 0.154 M NaCl and was stored at -80 °C. To a portion of Tmab in saline (74 μL) were added macropa-NCS (52 μL) and NaHCO3 buffer (266 μL), so that the final concentrations of Tmab and macropa-NCS were 5.1 mg/mL and 0.59 mg/mL, respectively. Macropa-NCS was estimated to be in 16-fold molar excess to Tmab based on a molecular weight of 1045.76 g/mol for macropa-NCS (tetra-TFA salt)[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight

584.06

Formula

C26H38ClN5O8

CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O=C(O)C1=NC(CN2CCOCCOCCN(CC3=NC(C(O)=O)=CC=C3)CCOCCOCC2)=CC(N)=C1.[H]Cl

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

4°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Solvent & Solubility
In Vitro: 

H2O : ≥ 100 mg/mL (171.22 mM)

DMSO : 83.33 mg/mL (142.67 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 1.7122 mL 8.5608 mL 17.1215 mL
5 mM 0.3424 mL 1.7122 mL 3.4243 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • Molarity Calculator

  • Dilution Calculator

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 *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

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Volume (start)

V1

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Concentration (final)

C2

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Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.08 mg/mL (3.56 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.08 mg/mL (3.56 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Calculation results:
Working solution concentration: mg/mL
This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only.If necessary, please contact MedChemExpress (MCE).
Purity & Documentation

Purity: 99.51%

References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO / H2O 1 mM 1.7122 mL 8.5608 mL 17.1215 mL 42.8038 mL
5 mM 0.3424 mL 1.7122 mL 3.4243 mL 8.5608 mL
10 mM 0.1712 mL 0.8561 mL 1.7122 mL 4.2804 mL
15 mM 0.1141 mL 0.5707 mL 1.1414 mL 2.8536 mL
20 mM 0.0856 mL 0.4280 mL 0.8561 mL 2.1402 mL
25 mM 0.0685 mL 0.3424 mL 0.6849 mL 1.7122 mL
30 mM 0.0571 mL 0.2854 mL 0.5707 mL 1.4268 mL
40 mM 0.0428 mL 0.2140 mL 0.4280 mL 1.0701 mL
50 mM 0.0342 mL 0.1712 mL 0.3424 mL 0.8561 mL
60 mM 0.0285 mL 0.1427 mL 0.2854 mL 0.7134 mL
80 mM 0.0214 mL 0.1070 mL 0.2140 mL 0.5350 mL
100 mM 0.0171 mL 0.0856 mL 0.1712 mL 0.4280 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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Macropa-NH2 hydrochloride Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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Macropa-NH2 hydrochloride
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