8260Matrix Spike Back Catalog number: 97031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended Y23145700CY Chloroparaffin C14-C17 57% Cl, 1000µg/mL in Cyclohexane, 10ml Price on request 685315 Homovanillic acid, 25mg Price on request 9530.19-25MG Clomipramine hydrochloride Price on request