Wide Particle Size Range | Scalable from Analytical to Preparative HPLC | Excellent as an L11 Choice
Cogent RP™ Phenyl HPLC columns are MICROSOLV’s most popular phenyl phase for reversed‑phase (RP) HPLC, widely used when C8 or C18 columns do not provide adequate selectivity. These columns are especially effective for aromatic and moderately polar compounds, including peptides, making them a trusted solution for both USP® L11 methods and in‑house applications.
The stationary phase consists of a phenyl ring bonded via a C3 hydrocarbon linker, delivering balanced hydrophobic retention with strong π–π interactions for improved separation of aromatic analytes.
Why Choose Cogent RP™ Phenyl?
Phenyl phases offer selectivity that cannot be achieved with purely alkyl columns. Cogent RP™ Phenyl columns are often selected when:
Aromatic compounds co‑elute on C18
Greater π–π interaction is needed
Improved resolution of structurally similar compounds is required
Peptides or polar analytes show poor peak shape on alkyl phases
This makes Cogent RP™ Phenyl a true workhorse and “go‑to” column in both GMP and research laboratories.
High‑Purity Silica and Proven Bonding Technology
Cogent RP™ Phenyl columns are manufactured using world‑class, high‑purity silica and a bonding technology refined over many years to ensure reproducible performance and long column life.
Key surface features include:
C3‑phenyl bonded phase
Exhaustive double end‑capping
Minimized silanol activity
Reduced peak tailing
Consistent retention and excellent peak symmetry
These characteristics make the column a reliable choice for routine, regulated, and development workflows.
Designed for Reversed‑Phase HPLC and LC‑MS
Cogent RP™ Phenyl columns are packed and ready for reversed‑phase HPLC and are fully compatible with LC‑MS methods. The phenyl selectivity provides an effective alternative to C18 while maintaining method robustness and reproducibility.
Available Formats and Scalability
To support both routine analysis and scale‑up, Cogent RP™ Phenyl columns are available in:
Analytical columns
Guard columns
Preparative columns
A wide range of particle sizes
This allows seamless method transfer from analytical development to preparative purification.
Key Features and Benefits
Designed for USP® L11 phenyl methods
Optimized for reversed‑phase HPLC
Excellent selectivity for aromatic and polar compounds
Effective for peptide separations
C3‑phenyl bonded phase
Double end‑capped for reduced peak tailing
Manufactured with high‑purity silica
Proven performance in GMP and research labs
Scalable from analytical to preparative HPLC
Compatible with HPLC and LC‑MS
Typical Applications
Aromatic pharmaceuticals and intermediates
Polyaromatic and heteroaromatic compounds
Peptides and moderately polar analytes
USP® L11 compliant methods
QC, GMP, and research chromatography
Additional Resources
Column Protection Recommendation
Important: MICROSOLV technical support strongly recommends using the Cogent Column Filter, which is included with each column, whenever possible. Column filters help protect against particulates, extend column lifetime, and maintain consistent chromatographic performance.
👉 Learn more about the Cogent Column Filter for HPLC column protection
