EPA Method 8260B Internal Standard

(8S,9R,10R,11R)-rel-8,9,10,11-Tetrahydro-benz[a]anthracene-8,9,10,11-tetrol, , Solvent-, Unit , # of units-, Cas.no. 53760-22-8 (Unspecified stereochemistry)

(2RS)-2-(4-Ethylphenyl)propanoic acid, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 3585-52-2

Ethyl 4-hydroxybenzoate, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 120-47-8