Supplier: Thermo Fisher Scientific

5,5'-Dithiobis(2-nitrobenzoic acid) (Ellmans reagent, DTNB) 99%

Supplier: Apollo Scientific

1,9-Diazaspiro[5.5]undec-3-en-2-one hydrochloride 95+%

Supplier: Apollo Scientific

5,5'-(Hexafluoropropane-2,2-diyl)bis(2-(allyloxy)aniline) ≥95%

Supplier: Thermo Fisher Scientific

3,3',5,5'-Tetra-tert-butyl-4,4'-diphenoquinone ≥98%

Supplier: Thermo Fisher Scientific

5,5',6,6'-Tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane 97%

Supplier: LGC Standards PROMOCHEM

3,3',5,5'-Tetrachlorobiphenyl (PCB No. 80)

Supplier: LGC Standards PROMOCHEM

2,2',5,5'-Tetrachlorobiphenyl (PCB No. 52)

Supplier: LGC Standards PROMOCHEM

2,3',4',5,5'-Pentachlorobiphenyl (PCB No. 124)

Supplier: Apollo Scientific

5,5-Dimethyl-2-[(phenylamino)methylidene]cyclohexane-1,3-dione, tech

Supplier: Apollo Scientific

2-{[(3-Methoxyphenyl)amino]methylidene}-5,5-dimethylcyclohexane-1,3-dione, tech

Supplier: MP Biomedicals

3,3',5,5'-Tetramethylbenzidine is suitable as peroxidase substrate for use in ELISA procedures. The substrate produces a soluble end product that is pale blue in color and can be read spectrophotometrically at 370 or 620 to 650 nm. The TMB reaction may be stopped with 2 M H₂SO₄ (resulting in a yellow color), and read at 450 nm. A sensitive and specific reagent for the detection of blood, assay of hemoglobin, assay of peroxidases. It is useful in gel staining procedure for low levels of home-associated peroxidases and for enzyme immunoassay of horseradish peroxidase.

Supplier: Apollo Scientific

3,3-Dimethyl-1,5-dioxaspiro[5.5]undecan-9-one 98%

Supplier: Apollo Scientific

tert-Butyl 9-cyano-3-azaspiro[5.5]undecane-3-carboxylate, tech

Supplier: Thermo Fisher Scientific

3,3',5,5'-Tetramethylbenzidine dihydrochloride hydrate 99+%

Supplier: TCI

3,3',5,5'-Tetra-tert-butyl-4,4'-diphenoquinone ≥98.0% (by HPLC)

Supplier: TCI

3,3,3',3'-Tetramethyl-5,5',6,6'-tetrapropoxy-1,1'-spirobiindane ≥98.0% (by HPLC)

Supplier: TCI

3,3',5,5'-Tetra-tert-butyl-2,2'-dihydroxybiphenyl ≥98.0% (by GC)

Supplier: Thermo Fisher Scientific

5,5-Dibromopyrimidine-2,4,6(1H,3H,5H)-trione 97%

Supplier: Apollo Scientific

Ethyl-1-benzyl-5,5-difluoro-4-oxo-piperidine-3-carboxylate 95+%

Supplier: TCI

6,6,7,7,8,8,8-Heptafluoro-5,5-bis(trifluoromethyl)-1,3-octadiene ≥98.0% (by GC)

Supplier: TCI

4,4'-Dibromo-2,2'-bis(triisopropylsilyl)-5,5'-bithiazole ≥98.0% (by HPLC)

Supplier: TCI

3,3-Dimethyl-1,5-dioxaspiro[5.5]undecan-9-one ≥98.0% (by GC)

Supplier: TCI

3,3'-Dibromo-5,5'-bis(trimethylsilyl)-2,2'-bithiophene ≥98.0% (by GC)

Supplier: TCI

3,3',5,5'-Tetra-tert-butyl-4,4'-stilbenequinone ≥95.0% (by HPLC)

Supplier: Apollo Scientific

2-Amino-5,5-dimethyl-5,6-dihydro-4H-benzothiazol-7-one

Supplier: TCI

3,9-Bis(2-cyanoethyl)-2,4,8,10-tetraoxaspiro[5.5]undecane ≥98.0% (by GC)

Supplier: Apollo Scientific

1-tert-Butyl-3-ethyl-5,5-difluoro-4-oxopiperidine-1,3-dicarboxylate

Supplier: Thermo Fisher Scientific

3,3',5,5'-Tetramethylbenzidine (TMB) solution, standard sensitivity ready-to-use, precipitating

Supplier: Biotium

Dimethyl BAPTA AM ester is a membrane permeable form of Dimethyl BAPTA that can be loaded into cells by incubation. Dimethyl BAPTA AM ester itself does not bind calcium, but once inside the cell is converted into Dimethyl BAPTA by cytoplasmic esterases.

Supplier: Biotium

BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations. By injecting the chelators into cells or by incubating cells with the AM ester form of the chelators, one can control the cytosolic calcium concentration, an important means to study the roles of calcium.