17-alpha-Estradiol Back Catalog number: 72741 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4359-10-5AC ISO 17495 Internal Standard Stock Solution 2 Internal standards, each 10µg/mL in acetone; unit: 1x5mL 2061.6 2,4-Dibromophenol [615-58-7] 2060.6 2,4,6-Tribromophenol [118-79-6] The following compounds are suggested as alternative I Price on request 674044 Celiprolol, 50mg Price on request C15085000 Methylcyclohexane, certified, 1ml Price on request