1. 3,5,6-Trichloro-2-pyridinol

3,5,6-Trichloro-2-pyridinol  (Synonyms: TCPy)

Cat. No.: HY-W018171 Purity: 99.85%
Data Sheet Handling Instructions Technical Support

3,5,6-Trichloro-2-pyridinol (TCPy) is the main degradation product of the herbicide Triclopyr and the insecticides Chlorpyrifos and Chlorpyrifos-methyl.

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

3,5,6-Trichloro-2-pyridinol Chemical Structure

3,5,6-Trichloro-2-pyridinol Chemical Structure

CAS No. : 6515-38-4

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Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
USD 31 In-stock
Solution
10 mM * 1 mL in DMSO USD 33 In-stock
Solid
500 mg USD 30 In-stock
1 g USD 45 In-stock
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Based on 1 publication(s) in Google Scholar

Other Forms of 3,5,6-Trichloro-2-pyridinol:

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  • Biological Activity

  • Purity & Documentation

  • References

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Description

3,5,6-Trichloro-2-pyridinol (TCPy) is the main degradation product of the herbicide Triclopyr and the insecticides Chlorpyrifos and Chlorpyrifos-methyl[1].

Molecular Weight

198.43

Formula

C5H2Cl3NO

CAS No.
Appearance

Solid

Color

Off-white to gray

SMILES

O=C1C(Cl)=CC(Cl)=C(Cl)N1

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 32.5 mg/mL (163.79 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 5.0396 mL 25.1978 mL 50.3956 mL
5 mM 1.0079 mL 5.0396 mL 10.0791 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. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
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: ≥ 3.25 mg/mL (16.38 mM); Clear solution

    This protocol yields a clear solution of ≥ 3.25 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (32.5 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% Corn Oil

    Solubility: ≥ 3.25 mg/mL (16.38 mM); Clear solution

    This protocol yields a clear solution of ≥ 3.25 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (32.5 mg/mL) to 900 μL Corn oil, and mix evenly.

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.
Please enter your animal formula composition:
%
DMSO +
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, PEG300/PEG400, Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Purity & Documentation

Purity: 99.85%

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. 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 5.0396 mL 25.1978 mL 50.3956 mL 125.9890 mL
5 mM 1.0079 mL 5.0396 mL 10.0791 mL 25.1978 mL
10 mM 0.5040 mL 2.5198 mL 5.0396 mL 12.5989 mL
15 mM 0.3360 mL 1.6799 mL 3.3597 mL 8.3993 mL
20 mM 0.2520 mL 1.2599 mL 2.5198 mL 6.2995 mL
25 mM 0.2016 mL 1.0079 mL 2.0158 mL 5.0396 mL
30 mM 0.1680 mL 0.8399 mL 1.6799 mL 4.1996 mL
40 mM 0.1260 mL 0.6299 mL 1.2599 mL 3.1497 mL
50 mM 0.1008 mL 0.5040 mL 1.0079 mL 2.5198 mL
60 mM 0.0840 mL 0.4200 mL 0.8399 mL 2.0998 mL
80 mM 0.0630 mL 0.3150 mL 0.6299 mL 1.5749 mL
100 mM 0.0504 mL 0.2520 mL 0.5040 mL 1.2599 mL
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Product Name:
3,5,6-Trichloro-2-pyridinol
Cat. No.:
HY-W018171
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