Chlorophenol Red-b-D-Galactopyranoside Sodium Salt (CPRG)

RT

607, 39

Yellow to orange powder

Used to detect the presence of coliform bacteria. Chlorophenol red beta-D-galactopyranoside (CPRG) is a substrate that produces a dark red precipitate in the presence of β-galactosidase.

Synonyms:
CPRG, Sodium Salt; CPRG-N; sodium; 2-[(Z)-(3-chloro-4-oxocyclohexa-2, 5-dien-1-ylidene)-[3-chloro-4-[(2S, 3R, 4S, 5R, 6R)-3, 4, 5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyphenyl]methyl] benzenesulfonate

CAS No:
99792-50-4

Molecular Formula:
C25H21Cl2O10S·Na

Molecular Weight:
607.39

Purity (HPLC):
≥96%

Appearance:
Yellow to orange powder

Solubility (Water):
Red to orange

Free Chlorophenol Red:
≤0.1%

Sodium Content:
3-4%

Storage and Stability:
Powder may be stored at -20°C. Stable for 6 months at -20°C after receipt.