QC Check Sample Back Catalog number: 59528 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10963.17-K-ME Diphenhydramine hydrochloride ,1000 µg base/mL,MeOH,1mL, Price on request 10448.12-K-IO 4,4'-Diaminobiphenyl-d8 (Rings-d8) Price on request 673800 N-2,4-Dimethylphenyl-N'-methylformamidine HCl, 10m Price on request