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Aromatic organic compounds that contain a hydroxyl functional group (R-OH, where each R is a benzene ring) with no substituents in the fourth carbon, or the fourth position, in the benzene ring.
This certified reference material (CRM) is produced and certified in accordance with ISO/IEC 17025 and ISO 17034. This CRM is traceable to the SI through a primary reference material from a NMI. Certified content incl. uncertainty and expiry date are stated on the enclosed certificate.