JWH 250 N-(5-hydroxypentyl) metabolite-d5 (Item No. 11474) is intended for use as an internal standard for the quantification of JWH 250 N-(5-hydroxypentyl) metabolite (Item No. 9000767) by GC- or LC-MS. Cannabimimetic indoles, including certain “JWH” compounds, have been identified in herbal blends.1 Hydroxylated and glucuronidated metabolites of two closely-related compounds, JWH 015 and JWH 018, have been identified from in vitro liver microsomal metabolism and from urine, respectively.2,3,4 JWH 250 is a cannabimimetic indole that is structurally- and functionally-related to JWH 015 and JWH 018. JWH 250 N-(5-hydroxypentyl) metabolite is expected to be a metabolite of JWH 250 that would be detectable both in serum and in urine.WARNING This product is not for human or veterinary use.