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Dehydrothio-p-toluidine (DHPT) 92-36-4

Dehydrothio-p-toluidine (DHPT) 92-36-4

CAS No.: 92-36-4

Dehydrothio-p-toluidine (DHPT) is a chemical intermediate used in dye production. Dehydrothio-p-toluidine displays inhal
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Dehydrothio-p-toluidine (DHPT) is a chemical intermediate used in dye production. Dehydrothio-p-toluidine displays inhalation toxicity in both acute and subchronic conditions.

Physicochemical Properties


Molecular Formula C14H12N2S
Molecular Weight 240.32
Exact Mass 240.072
CAS # 92-36-4
PubChem CID 7087
Appearance Light yellow to green yellow solid powder
Density 1.264 g/cm3
Boiling Point 434°C
Melting Point 191-196°C
Flash Point 217.3ºC
Index of Refraction 1.709
LogP 4.435
Hydrogen Bond Donor Count 1
Hydrogen Bond Acceptor Count 3
Rotatable Bond Count 1
Heavy Atom Count 17
Complexity 263
Defined Atom Stereocenter Count 0
InChi Key XRTJYEIMLZALBD-UHFFFAOYSA-N
InChi Code

InChI=1S/C14H12N2S/c1-9-2-7-12-13(8-9)17-14(16-12)10-3-5-11(15)6-4-10/h2-8H,15H2,1H3
Chemical Name

4-(6-methyl-1,3-benzothiazol-2-yl)aniline
HS Tariff Code 2934.99.9001
Storage

Powder-20°C 3 years

4°C 2 years

In solvent -80°C 6 months

-20°C 1 month

Note: This product requires protection from light (avoid light exposure) during transportation and storage.
Shipping Condition Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity


ln Vivo Under conditions of an average of 0.64 mg DHPT/L, dehydrothio-p-toluidine (4 h) causes mice to salivate, paw and chew, lachrymate, sporadic fasciculations, respire quickly, and lose little on weight[1]. Mice treated with 4 hours with dehydrothio-p-toluidine exhibit average 2.41 mg DHPT/L conditions, which results in intermittent nasal discharge and lethargy[1]. Dehydrothio-p-toluidine (6 h/day for five days, followed by two days off and then five more exposure days; 0.6 mg DHPT/L) causes changes in the liver including hepatocyte hypertrophies, proliferation of bile-duct epithelial cells, induxes thymic necrosis, and lymphocyte depletion after the tenth exposure[1]. It also lowers the erythrocyte count, haemoglobin level, and relative number of lymphocytes compared to the controls. It also produces a larger volume of less-concentrated urine.
References

[1]. Inhalation toxicity of dehydrothio-p-toluidine. Food Chem Toxicol. 1984 Apr;22(4):289-92.

Additional Infomation 2-(4-aminophenyl)-6-methylbenzothiazole appears as light tan or light orange powder. Solutions have a violet-blue fluorescence. (NTP, 1992)

Solubility Data


Solubility (In Vitro) May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
Solubility (In Vivo) Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300 :Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300:Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)

Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders

Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 4.1611 mL 20.8056 mL 41.6112 mL
5 mM 0.8322 mL 4.1611 mL 8.3222 mL
10 mM 0.4161 mL 2.0806 mL 4.1611 mL
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.