4-Aminophenyl b-D-galactopyranoside

RT

271, 27

White to off-white powder

4-Aminophenyl β-D-galactopyranoside (PAPG, 4-APG) is used as a substrate for the development of β-galactosidase(s) (GUS)-dependent assay systems via the formation of an electroactive product. It may be used to create affinity matricies for the capture or purification of β-galactosidase(s).[1][2]

CAS No:
5094-33-7

Molecular Formula:
C12H17NO6

Molecular Weight:
271.27

Appearance:
White to off-white powder

Purity:
≥90% (1H-NMR)

Identity (IR):
Conforms to structure

Water:
≤5%

Solubility (1% dH2O):
Water, 50mg/ml. Clear, colorless to yellow.

Turbidity:
≤4.0 NTU

Storage and Stability:
Powder and reconstituted product are stable for 6 months after receipt at -20°C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Hygroscopic and light sensitive. Store in amber vial.