• Nov 19, 2025 O Nitrophenyl Beta D Galactopyranoside oside (ONPG) does. This seemingly simple molecule, often overlooked in the bustling world of biochemistry, plays a surprisingly crucial role in understanding and manipulating enzyme activity, particularly that of β-galactosidase. Let's delve into the fascinating world of ONPG and uncover By Gertrude Moen