Fluorescent brightener OB-1

4,4′-Bis(2-benzoxazolyl)stilbene

Fluorescent brightener OB-1 (CAS 1533-45-5) is a high-purity reference standard produced and distributed by WITEGA Laboratorien Berlin-Adlershof GmbH. It supports LC-MS/MS and GC-MS workflows as an LC-MS/MS calibration standard for optical whitening agents. Laboratories choose it for traceable quantification, robust calibration, and confident confirmatory analysis. Therefore, it fits seamlessly into routine and research environments.

Use this reference standard to build precise calibration curves and to validate methods across matrices. It performs reliably in LC-MS/MS or GC-MS analytical quantification. Moreover, it helps you demonstrate traceability and data integrity during audits. Additionally, it streamlines system suitability testing before sample runs.

• High purity for consistent response in LC-MS/MS and GC-MS.
• Traceability backed by clear batch documentation.
• Stable performance for calibration, verification, and bracketing.
• Supports confirmatory analysis and QA/QC requirements.

Applications span many sectors and tasks:

• Regulated laboratories needing defensible measurements.
• Pharmaceutical research for screening and characterization.
• Residue control in textiles, plastics, and packaging.
• Metabolism and degradation studies in environmental matrices.
• Multi-residue method development with complex extracts.

Prepare solutions gravimetrically to achieve accurate target levels. Then verify response factors and recovery in your matrix. Furthermore, integrate this reference standard into calibration, method validation, and routine confirmatory analysis. For technical support or custom pack sizes, contact WITEGA Laboratorien Berlin-Adlershof GmbH. Importantly, Fluorescent brightener OB-1 (CAS 1533-45-5) remains a dependable choice when you require traceable results and smooth data comparability across studies.

You can download your Safety Data Sheet for OP213

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