Surrogate Standard Back Catalog number: 98607 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10940.15-100-ME Tramadol-13C,d3 HCl, 100µg/ml in MeOH, 1ml Price on request 678051 Acetochlor OA, 100 µg/ml, Acetonitrile, 1ml Price on request 72422 2-Aminopyridine Price on request