cell culture | mammalian: suitable
≤0.0005% Phosphorus (P)
≤0.1% Insoluble matter
white to off-white
1.0-2.5 (25 °C, 176 g/L in water)
190-194 °C (dec.)
H2O: 0.5 M, clear, colorless
sulfate (SO42-): ≤0.05%
human ... SLC23A2(9962)
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If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
Yes, L-ascorbic acid is a synonym for vitamin C.
Aqueous solutions are stable only in the absence of oxygen. Aqueous solutions are most stable at pH 5-6, very unstable at alkaline pH. (Data for Biochemical Research, 3rd ed., Dawson, R. M. C., et al., Oxford University Press (New York, NY: 1986), p. 116) Degradation is markedly increased in the presence of transition metal ions, especially Cu(II) and Fe(III). The first stage of oxidation of L-ascorbic acid to dehydroascorbic acid is reversible and the biological activity is retained. Further oxidation to 2,3-diketogulonic acid is not reversible and the activity is lost. (Omura, H., and Yamafuji, K., in Methodicum Chimicum, 11(2), Korte, F., and Goto, M., eds., Academic Press (New York, NY: 1977), p. 115).
The pKa values for L-ascorbic acid (from the chemicals encyclopedia published by the Royal Society of Chemistry) are 4.17 and 11.57.
According to the Data for Biochemical Research, 3rd ed., Dawson, R. M. C., et al., Oxford University Press (New York, NY 1986), p. 116, the L-ascorbic acid extinction coefficient: EmM = 7.0 (265 nm, water), 7.5 (245 nm, acid).
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