delta-Valerolactam Back Catalog number: 73544 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673291 Fenthion, 100 µg/ml, Acetonitrile, 5ml Price on request 674874 Difloxacin hydrochloride, 100mg Price on request S-4073-05-10ME Sulfur Standard 2 Unit: 10mL screw cap bottle Chiron No. Matrix: Methanol Compound Concentration S-4073 Di-n-propyl sulfide 0.5 ppm (w/w) Di-n-butyl sulfide 0.5 ppm (w/w) Price on request