Surrogate Standard Back Catalog number: 92974 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92469 Surrogate Standard Price on request 15422.4-100MG Butyric-d7 acid, 100mg Price on request 2758.10-1ML n-Butyrophenone, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 495-40-9 Price on request