Piperonyl butoxide, 1000µg/ml in MeOH, 1ml Back Catalog number: 71280 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70167 Endosulfan I Price on request 9067.8-K-IP 5,6-Dichlorovanillin , 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 18268-69-4 Price on request A17446000AL-100 Theophylline, 100μg/mL in Acetonitrile, 1ml Price on request