EPA Method 524 & 624 - Internal Standard Back Catalog number: 19494 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3607.7-1ML 4-Heptanol, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 589-55-9 Price on request 9406.18-100-ME Clozapine-d4, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 204395-52-8 Price on request 673158 rac 1,2-Bis-palmitoyl-3-chloropropanediol, 25mg Price on request