m-Cresol Purple

CAS: 2303-01-7

Ref. 02-B24338

Product Information

• Name: m-Cresol Purple
• Synonyms: 3,3-bis(4-hydroxy-2-methylphenyl)-2,1λ⁶-benzoxathiole-1,1-dione, 2-[(Z)-(4-hydroxy-2-methylphenyl)(2-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonic acid, 3,3-Bis(4-hydroxy-2-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide, 3,3-bis(4-hydroxy-2-methylphenyl)-2-benzofuran-1(3H)-one, 3H-2,1-Benzoxathiole, phenol deriv., 4,4'-(1,1-Dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(3-methylphenol), 4,4′-(1,1-Dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[3-methylphenol], Cresol purple, Metacresol Purple, NSC 9607, Phenol, 4,4′-(3H-2,1-benzoxathiol-3-ylidene)bis[3-methyl-, S,S-dioxide, m-Cresol, 4,4′-(3H-2,1-benzoxathiol-3-ylidene)di-, S,S-dioxide, m-Cresolsulfonephthalein, o-Toluenesulfonic acid, α-hydroxy-α,α-bis(4-hydroxy-o-tolyl)-, γ-sultone, phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[3-methyl-

Description

m-Cresol Purple acts as a pH indicator dye. It plays an important role in spectrophotometric pH measurements. It operates in the pH ranges 1.2 - 2.8 (red to yellow) and 7.4 - 9.0 (yellow to violet). Further, it is employed to stain epithelial cells and proteins. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

• Brand: Alfa Aesar By Thermo Fisher Scientific

Chemical properties

• Molecular weight: 382.43
• Formula: C₂₁H₁₈O₅S
• Color/Form: Powder, Green to dark green
• InChI key: OLQIKGSZDTXODA-UHFFFAOYSA-N