The acidities of ascorbic and sialic acids | 合法藥品大搜索

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Vitamin C (ascorbic acid) is a water soluble vitamin found in citrus fruits and green vegetables and deficiency of which is the cause of scurvy. There is no evidence ... Read More

, originally called hexuronic acid. It is a white solid, but impure samples can appear yellowish. It dissolves well in water to give mildly acidic solutions. It is a mild ... Read More

2018年12月5日 — l-Ascorbic acid is freely soluble in water (300 g/L at 20°C), difficult in alcohol (20 g/L at 20°C) and insoluble in chloroform, ether and benzene. It ... Read More

Ascorbic acid has pKa values of 4.2 and 11.6. Ascorbic acid has a melting temperature of 190°C with decomposition (Moffat, 1986). A solution of ascorbic acid in ... Read More

Vitamin C is now commonly referred to as ascorbic acid because of its acidic character and its effectiveness in the treatment and prevention of scorbutus (​scurvy). Read More

由 CD Hurd 著作 · 1970 · 被引用 19 次 — The former is vitamin C. The latter, among ... This note concerningthe pKa's of ascorbic and sialic acids is ... Ascorbic acid (I) is the gamma lactone of the enol. Read More

2010年4月8日 — L-ascorbic acid, sodium salt, biospider. Monosodium ascorbate ... Sodium ascorbic acid, Generator ... pKa (Strongest Acidic), 4.36, ChemAxon. Read More

2011年9月21日 — Monodehydro-L-ascorbic acid is an extremely weak basic (essentially neutral) compound (based on its pKa). CAS Number, 6730-29-6. Read More