81201-90-3 L-4-Hydroxyphenyl-4-13C-alanine L-Tyrosine-(phenyl-4-13C) CAS 81201-90-3

Description

Compared with other compounds in its class, the molecular weight of 187.22 g/mol gives 81201-90-3 L-4-Hydroxyphenyl-4-13C-alanine L-Tyrosine-(phenyl-4-13C) distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

81201-90-3 L-4-Hydroxyphenyl-4-13C-alanine L-Tyrosine-(phenyl-4-13C) (CAS 81201-90-3), molecular formula C8[13C]H16NO3 and molecular weight 187.22 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 81201-90-3 L-4-Hydroxyphenyl-4-13C-alanine L-Tyrosine-(phenyl-4-13C) (C8[13C]H16NO3) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

As a certified reference material (CRM), 81201-90-3 L-4-Hydroxyphenyl-4-13C-alanine L-Tyrosine-(phenyl-4-13C) meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

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