Monomethyl phthalate
Based on 1 Customer Validation
Monomethyl phthalate is an orally active metabolite of phthalic acid. Monomethyl phthalate, as a urine biomarker after exposure to phthalate, can be used as a detection indicator for thyroid cancer and benign nodules. Monomethyl phthalate reduces the survival rate of young frogs. Monomethyl phthalate induces oxidative damage to red blood cells in rats.
For research use only. We do not sell to patients.
- Purity: 99.41%
- CAS No.: 4376-18-5
- Formula: C9H8O4
- Molecular Weight:180.16
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 6 months , -20°C, 1 month
All Endogenous Metabolite Isoforms
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Biological Activity
Monomethyl phthalate (2.5-100μg/mL, 3 h) increases the erythrocyte hemolysis rate[3].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:erythrocytes
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Concentration:2.5. 25, 100 μg/mL
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Incubation Time:3 h
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Result:Resulted in an increase in the erythrocyte hemolysis rate.
Monomethyl phthalate (5-250 mg/kg, p.o., daily for 21 day) causes damage to erythrocytes after entering the organism[3].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:male Sprague-Dawley (SD) rats (8 weeks, 200 g)[3]
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Dosage:5, 50, 250 mg/kg
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Administration:Oral gavage (p.o.), daily for 21 day
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Result:Reduced the number of erythrocytes, caused erythrocyte hemolysis, altered the hemoglobin content, and affected the content of methemoglobin and the amount of hemoglobin iron released.
Inhibited the activity of antioxidant enzymes and led to oxidative stress in a dose-dependent manner.
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Animal Model:Western clawed frog (Silurana tropicalis) embryos[2]
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Dosage:1.3, 12.3, and 128.7 mg/L
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Administration:in water
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Result:Decreased survival, hastened metamorphosis, and biased the sex ratio toward males (2M:1F) at the juvenile stage.
Did not alter the expression of a subset of thyroid hormone-, sex steroid-, cellular stress- or transcription regulation-related genes in the juvenile frog livers.
Did not have significant adverse health effects, except that females had larger interocular distance and the expression of the heat shock protein 70 was decreased by 60% in the adult liver in adult stage.
Chemical Information
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CAS No. 4376-18-5
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Appearance Solid
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Molecular Weight 180.16
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Formula C9H8O4
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Color White to off-white
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SMILES
O=C(C1=CC=CC=C1C(O)=O)OC
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Synonyms
2-(Methoxycarbonyl)benzoic acid
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Structure Classification
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Initial Source
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Solvent & Solubility
DMSO : ≥ 100 mg/mL (555.06 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
* "≥" means soluble, but saturation unknown.
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. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
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. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.5 mg/mL (13.88 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 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.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 2.5 mg/mL (13.88 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 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.
Please enter the basic information of animal experiments:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL.
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
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Data Sheet (281 KB)
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SDS (396 KB)
- English - EN (396 KB)
- Français - FR (396 KB)
- Deutsch - DE (396 KB)
- Norwegian - NO (396 KB)
- Español - ES (396 KB)
- Swedish - SV (396 KB)
- Italian - IT (396 KB)
- Korean - KR (396 KB)
- Portuguese - PT (396 KB)
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Handling Instructions (2659 KB)
References
[1]. Chong Liu, et al. Urinary biomarkers of phthalates exposure and risks of thyroid cancer and benign nodule. J Hazard Mater. 2020 Feb 5;383:121189. [Content Brief]
[2]. Mathieu-Denoncourt J, et al. Chronic exposures to monomethyl phthalate in Western clawed frogs. Gen Comp Endocrinol. 2015 Aug 1;219:53-63. [Content Brief]
[3]. Zhang X, et al. Metabolite Monomethyl Phthalate (MMP) Induces Oxidative Damage in Rat Erythrocytes: Role of Vitamins C and E. Toxics. 2025 May 7;13(5):379. [Content Brief]
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. 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 | 1 mM | 5.5506 mL | 27.7531 mL | 55.5062 mL | 138.7655 mL |
| 5 mM | 1.1101 mL | 5.5506 mL | 11.1012 mL | 27.7531 mL | |
| 10 mM | 0.5551 mL | 2.7753 mL | 5.5506 mL | 13.8766 mL | |
| 15 mM | 0.3700 mL | 1.8502 mL | 3.7004 mL | 9.2510 mL | |
| 20 mM | 0.2775 mL | 1.3877 mL | 2.7753 mL | 6.9383 mL | |
| 25 mM | 0.2220 mL | 1.1101 mL | 2.2202 mL | 5.5506 mL | |
| 30 mM | 0.1850 mL | 0.9251 mL | 1.8502 mL | 4.6255 mL | |
| 40 mM | 0.1388 mL | 0.6938 mL | 1.3877 mL | 3.4691 mL | |
| 50 mM | 0.1110 mL | 0.5551 mL | 1.1101 mL | 2.7753 mL | |
| 60 mM | 0.0925 mL | 0.4626 mL | 0.9251 mL | 2.3128 mL | |
| 80 mM | 0.0694 mL | 0.3469 mL | 0.6938 mL | 1.7346 mL | |
| 100 mM | 0.0555 mL | 0.2775 mL | 0.5551 mL | 1.3877 mL |