Melatonin,1000 µg/mL,MeOH,1mL, Back Catalog number: 11319.13-K-ME Manufacturer: CHIRON AS Availability: In the manufacturer's stock Price on request - + Recommended 30055 EPA Method 552 Internal Standard Price on request 10299.16-K-ME Tetra-n-butyltin-d36,1000 µg/mL,MeOH,1mL, Price on request 680900 Fluoxetine hydrochloride, 100µg/ml in MeOH, 1ml Price on request