25-Hydroxyvitamin D2-[d3], 50μg/ml, 1ml Back Catalog number: S4176-0.05 Availability: In the manufacturer's stock Price on request - + Recommended S-4359-10-ACX5 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 52041A Interference Standard 4 Price on request 82472 Vinyl acetate Price on request