525 Internal Standard Back Catalog number: 94212 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11195.18-K-ME Triflupromazine hydrochloride,1000 µg base/mL,MeOH,1mL, Price on request 674584 Cyproheptadine hydrochloride sesquihydrate, 100mg Price on request 11347.18-100MG Hydroxychloroquine sulfate,neat,neat,100mg, Price on request