Atrazine-desisopropyl-2-hydroxy Back Catalog number: 73518 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79022 Heptachlor, 1000µg/ml in Hexane, 1ml Price on request 22003 EPA Method 8240A Internal Standard Price on request 72282 L-Tyrosine Price on request