Notes: 25B-NBOH (hydrochloride) (Item No. 18328) is an analytical reference material that is structurally categorized as a phenethylamine. It displays high affinity for the serotonin (5-HT) receptors 5-HT2A and 5-HT2C (pKis = 8.3 and 9.4, respectively).{26036} This product is intended for research and forensic applications.