Internal Standard Back Catalog number: 95592 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1383.13-200-T 2-Methylcarbazole, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 3652-91-3 Price on request 93207 8151A Mix B Price on request 9538.9-100-ME Etirazetam-d6, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request