MTT tetrazolium, 99%+

Name: MTT tetrazolium, 99%+
Brand: Vaqora Chemicals
SKU: VQ-000637

About MTT tetrazolium, 99%+

MTT tetrazolium is a biological stain (AR grade) carrying the CAS registry number 298-93-1 at a purity of ≥99%. Formula C18H16BrN5S, molecular weight 414.3 g/mol. Systematically, it is named 2-(3,5-diphenyltetrazol-2-ium-2-yl)-4,5-dimethyl-1,3-thiazole bromide. It is also known as Thiazolyl blue tetrazolium bromide or MTT.

The material typically appears as a yellow powder. Literature values give a melting point of 195 °C (dec.). Recommended storage is at 2–8 °C, with the container kept tightly sealed. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

It is commonly used for histology and cytology staining, microscopy, clinical laboratories and pharmaceutical synthesis. Our customers for this product work in academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Available in 100 mg, 250 mg, 500 mg and 1 g packs, MTT tetrazolium is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Pharmaceutical synthesis

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	MTT tetrazolium, 99%+
Catalogue No.	VQ-000637
CAS Number	298-93-1
IUPAC name	2-(3,5-diphenyltetrazol-2-ium-2-yl)-4,5-dimethyl-1,3-thiazole bromide
Molecular formula	C₁₈H₁₆BrN₅S
Molecular weight	414.3 g/mol
Exact mass	413.031
Grade	AR
Purity / assay	≥99%
HSN code	32049000
InChIKey	AZKSAVLVSZKNRD-UHFFFAOYSA-M
SMILES	CC1=C(SC(=N1)[N+]2=NC(=NN2C3=CC=CC=C3)C4=CC=CC=C4)C.[Br-]
PubChem CID	64965

Physical properties
Physical form	Powder
Appearance	Yellow powder
Melting point	195 °C (dec.)
H-bond donors / acceptors	0 / 5
TPSA	75.7 Å²
Storage	2–8 °C
Synonyms	Thiazolyl blue tetrazolium bromide, 3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide, MTT, Methylthiazolyldiphenyl-tetrazolium bromide, Thiazolyl blue, MMT Tetrazolium, Thiazolyl Blue Monotetrazolium, 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide, 3-(4,5-Dimethylthiazolyl)-2,5-diphenyltetrazolium bromide, 3-(4,5-Dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide, 3-(4,5-dimethyl-1,3-thiazol-2-yl)-2,5-diphenyl-2H-tetrazol-3-ium bromide, 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H341Suspected of causing genetic defects

Precautionary statements: P203, P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P318, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 298-93-1

MTT tetrazolium

CAS: 298-93-1
Formula: C₁₈H₁₆BrN₅S
MW: 414.3 g/mol

VQ-045628

Molecular Biology

MTT tetrazolium, for molecular biology

CAS: 298-93-1
Formula: C₁₈H₁₆BrN₅S
MW: 414.3 g/mol

VQ-046139

Cell Culture

MTT tetrazolium, suitable for cell culture, 99%+

CAS: 298-93-1
Formula: C₁₈H₁₆BrN₅S
MW: 414.3 g/mol

VQ-000638

Frequently asked questions

What is the CAS number of MTT tetrazolium, 99%+?

The CAS Registry Number of MTT tetrazolium, 99%+ is 298-93-1. It is also known as Thiazolyl blue tetrazolium bromide, 3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide, MTT.

What is the molecular formula and molecular weight of MTT tetrazolium, 99%+?

MTT tetrazolium, 99%+ has the molecular formula C18H16BrN5S and a molecular weight of 414.3 g/mol. Its IUPAC name is 2-(3,5-diphenyltetrazol-2-ium-2-yl)-4,5-dimethyl-1,3-thiazole bromide.

Which grade and pack sizes of MTT tetrazolium, 99%+ can I order?

We supply MTT tetrazolium, 99%+ in AR (≥99%) grade, in 100 mg, 250 mg, 500 mg, 1 g, 5 g, 25 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with MTT tetrazolium, 99%+?

Yes. Every lot of MTT tetrazolium, 99%+ is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can MTT tetrazolium, 99%+ be shipped internationally?

Yes. MTT tetrazolium, 99%+ is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.

How should MTT tetrazolium, 99%+ be stored?

2–8 °C. Keep the container tightly closed and refer to the SDS for full handling guidance.