11585029001

NBT

crystals, pkg of 5 g

• Synonym(s): Nitrotetrazolium Blue chloride, 2,2′-bis(4-Nitrophenyl)-5,5′-diphenyl-3,3′-(3,3′-dimethoxy-4,4′-diphenylene)ditetrazolium chloride, 3,3′-(3,3′-Dimethoxy-4,4′-biphenylene)bis[2-(4-nitrophenyl)-5-phenyl-2H-tetrazolium chloride], p-Nitro-Blue tetrazolium chloride, p-Nitrotetrazolium blue, NBT, Nitro BT
• Linear Formula: C₄₀H₃₀N₁₀O₆ · 2Cl
• CAS Number: 298-83-9
• Molecular Weight: 817.64
• Beilstein/REAXYS Number: 4115923
• MDL number: MFCD00012159
• UNSPSC Code: 41116100
• PubChem Substance ID: 329749491

Properties

• description: 4-Nitro blue tetrazolium chloride, crystals
• Quality Level: 100
• form: crystals
• packaging: pkg of 5 g
• manufacturer/tradename: Roche
• storage temp.: 2-8°C
• SMILES string: [Cl-].[Cl-].COc1cc(ccc1-[n+]2nc(nn2-c3ccc(cc3)[N+]([O-])=O)-c4ccccc4)-c5ccc(c(OC)c5)-[n+]6nc(nn6-c7ccc(cc7)[N+]([O-])=O)-c8ccccc8
• InChI: 1S/C40H30N10O6.2ClH/c1-55-37-25-29(13-23-35(37)47-43-39(27-9-5-3-6-10-27)41-45(47)31-15-19-33(20-16-31)49(51)52)30-14-24-36(38(26-30)56-2)48-44-40(28-11-7-4-8-12-28)42-46(48)32-17-21-34(22-18-32)50(53)54;;/h3-26H,1-2H3;2*1H/q+2;;/p-2
• InChI key: FSVCQIDHPKZJSO-UHFFFAOYSA-L

Description

General description

NBT is soluble in water, aqueous buffers, and dimethylformamide.

Tetrazolium salts are useful in determining the metabolic activity of cells from many origins. The quaternary tetrazole ring core containing four nitrogen atoms, with a net positive charge induces cellular uptake through plasma membrane potential. This drives its use in cell biology. In immunolabeling technique, 4-Nitro blue tetrazolium (NBT) serves as an oxidant. The hydrolysis of 5-bromo-4-chloro-3-indolyl phosphate (BCIP) by alkaline phosphatase gives rise to leucoindigo, which is then being reduced by NBT to form an insoluble blue BCI. Certain cells reduce NBT, which is a colorless/yellow dye to blue or black formazan crystals. Due to this property, NBT is prefered in redox histochemistry and in biochemical applications. It is formerly used to distinguish between nonbacterial and bacterial diseases, the latter causing neutrophils to reduce the dye; used to confirm diagnosis of chronic granulomatous disease.

Application

• Colony and plaque hybridization
• Immunohistocytochemistry
• In situ hybridization
• Northern blot
• Southern blot
• Western blot

NBT has been used in in situ hybridization.

Quality

Performance-controlled in the LDH assay.

Preparation Note

Working solution: Solubility: soluble in water, aqueous buffers, and dimethylformamide. Can be dissolved in methanol. A clear solution is achieved at 20 mg/ml.

Analysis Note

Absorption: NBT has its maximum absorption at 260 nm [in water],
and the final product formazan has its maximum absorption at 605 nm [in nitrobenzole].

Other Notes

For life science research only. Not for use in diagnostic procedures.

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H302,H315,H319,H335
• pcodes: P261 - P264 - P280 - P304 + P340 + P312 - P337 + P313 - P403 + P233
• Hazard Classifications: Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 2
• flash_point_f: does not flash
• flash_point_c: does not flash