Molekula
MTT (Thiazolyl blue tetrazolium bromide)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
MTT (Thiazolyl blue tetrazolium bromide) is a yellow tetrazolium dye widely used in cell viability assays to assess metabolic activity via formazan crystal formation. It converts to a purple insoluble formazan product in live cells, enabling quantitative colorimetric analysis in research and drug discovery. CAS 298-93-1, molecular formula C18H16BrN5S, molecular weight 414.32 g/mol. Store at 2–8 °C. Signal word: Warning. Molekula supplies MTT from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 mg — £25.00 per pack ex VAT · £30.00 inc. VAT
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1 g — £40.40 per pack ex VAT · £48.48 inc. VAT
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5 g — £124.50 per pack ex VAT · £149.40 inc. VAT
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10 g — £210.10 per pack ex VAT · £252.12 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Yellow or Orange Powder |
| Water | ≤1.0% |
| Assay (HPLC) | ≥98.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
For research use only. Not for human use.
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Yellow powder |
| Melting Point | 195 °C (decomposes) |
| Vapour Pressure | 5.11 × 10⁻¹¹ mmHg at 25 °C (Estimated) |
| log P (octanol/water) | -2.32 |
Source: PubChem CID 64965 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 14706101 |
| CAS Number | 298-93-1 |
| IUPAC Name | 2-(3,5-diphenyltetrazol-2-ium-2-yl)-4,5-dimethyl-1,3-thiazole bromide |
| EC Number | 206-069-5 |
| Molecular Formula | C18H16BrN5S |
| Molecular Weight | 414.32 |
| Exact Mass | 413.031 |
| SMILES | CC1=C(SC(=N1)[N+]2=NC(=NN2C3=CC=CC=C3)C4=CC=CC=C4)C.[Br-] |
| InChIKey | AZKSAVLVSZKNRD-UHFFFAOYSA-M |
| InChI | InChI=1S/C18H16N5S.BrH/c1-13-14(2)24-18(19-13)23-21-17(15-9-5-3-6-10-15)20-22(23)16-11-7-4-8-12-16;/h3-12H,1-2H3;1H/q+1;/p-1 |
| PubChem CID | 64965 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2927.00.18.00 |
| Tariff Code | 2933998090 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H341 Suspected of causing genetic defects
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P263 Avoid contact during pregnancy/while nursing
- P281 Use personal protective equipment as required
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 2-(4,5-Dimethyl-2-thiazolyl)-3,5-diphenyl-2H-tetrazolium bromide
- 3-(4,5-dimethyl-1,3-thiazol-2-yl)-2,5-diphenyl-2H-tetrazol-3-ium bromide
- 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
- 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide
- 3-(4,5-Dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide
- 3-(4,5-Dimethylthiazolyl)-2,5-diphenyltetrazolium bromide
- MMT Tetrazolium
- Thiazolyl blue
- Thiazolyl Blue Monotetrazolium
- Thiazolyl blue tetrazolium bromide
Frequently asked questions
What is MTT (Thiazolyl blue tetrazolium bromide) commonly used for?
MTT is primarily used in cell viability assays to assess the metabolic activity of living cells, often in drug testing and cytotoxicity studies.
What is the chemical formula and molecular weight of MTT?
The chemical formula is **C18H16BrN5S** and the molecular weight is **414.32 g/mol**.
How should MTT be stored?
Store MTT at **2–8 °C** in a dry, well-ventilated area, protected from light and moisture.
What grade of MTT does Molekula supply?
Molekula supplies **analytical grade MTT**, suitable for high-precision biological assays.
Can Molekula supply MTT in bulk quantities?
Yes, we offer MTT in bulk for research and industrial applications—contact us for custom packaging options.
What documentation comes with an MTT order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.