white to slight yellow
ethanol: 50 mg/mL, clear, colorless
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Aquatic Chronic 1 - Carc. 2 - Lact. - Muta. 2 - Repr. 1A
6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
The storage conditions that a Sigma-Aldrich catalog and label recommend for products are deliberately conservative. For many products, long-term storage at low temperatures will increase the time during which they are expected to remain in specification and therefore are labeled accordingly. Where short-term storage, shipping time frame, or exposure to conditions other than those recommended for long-term storage will not affect product quality, Sigma-Aldrich will ship at ambient temperature. The products sensitive to short-term exposure to conditions other than their recommended long-term storage are shipped on wet or dry ice. Ambient temperature shipping helps to control shipping costs for our customers. At any time, our customers can request wet- or dry-ice shipment, but the special handling is at customer expense if our product history indicates that the product is stable for regular shipment. See Shipping and Storage for more information.
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This chemical is soluble in ethanol at 50 mg/mL with heating, and in DMSO at 27 mg/mL. Use of freshly prepared solutions is recommended.
α-Estradiol has been reported as being less feminizing than β-Estradiol while still having significant biological properties. See Moos, W.H., et al, "17α-Estradiol:a less-feminizing estrogen", Drug Development Research, 69(4), 177-184 (2008).
No specific suitability tests for cell culture applications have been performed by Sigma. The product is not sterile and has not been tested for endotoxins.
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Separation of Estriol 3-(β-D-glucuronide) sodium salt; β-Estradiol 3-(β-D-glucuronide) 17-sulfate dipotassium salt; Estriol 3-sulfate sodium salt; β-Estradiol 3,17-disulfate dipotassium salt, ≥95%; β-Estradiol 17-(β-D-glucuronide) sodium salt; β-Estradiol 3-(β-D-glucuronide) sodium salt; Estrone 3-(β-D-glucuronide) sodium salt; β-Estradiol 3-sulfate sodium salt, ≥93%; Estriol, ≥97%; Estrone 3-sulfate sodium salt, contains ~35% Tris as stabilizer; β-Estradiol, ≥98%; α-Estradiol, powder, ≥98% (TLC); Estrone, ≥99%
The Titan C18 column provided efficient and rapid resolution of thirteen related estrogenic compounds. Ultra Ultra high purity solvents provided robust operation.