D-(−)-Isoascorbic acid
Molecular Structure:
MDL:
MFCD00005378
Molecular Formula:
C6H8O6
Molecular Weight:
176.12
Alias:
异抗坏血酸; 赤藻糖酸; 异维生素 C; D-2,3,5,6-四羟基-2-己烯酸-gamma-内酯
Product order:
Name |
Specifications |
Packing |
Price |
Delivery |
D-(−)-Isoascorbic acid |
≥99%, FCC, Kosher |
10kg |
RMB 2054.8 |
Consulting service |
D-(−)-Isoascorbic acid |
≥99%, FCC, Kosher |
1kg |
RMB 314.6 |
Consulting service |
D-(−)-Isoascorbic acid |
分析标准品 |
250mg |
RMB 423.5 |
Consulting service |
D-(−)-Isoascorbic acid |
99% |
500g |
RMB 316.8 |
Consulting service |
D-(−)-Isoascorbic acid |
99% |
100g |
RMB 94.6 |
Consulting service |
Character:
易溶于水(可溶解范围约30%)和醇。还原性强,暴露于光线或加热时逐渐变色(变黑)。干燥状态下稳定性强,但在水溶液中遇空气将很快分解。水溶性1g/10mL,,能溶于水、醇和吡啶,颇溶于丙醇,微溶于甘油,其化学性质与抗坏血酸非常相似,具有同样强的还原作用。
Quality Standard:
外观Appearance 白色至黄色粉末
红外光谱鉴别Infrared spectrometry 和对照匹配
纯度Purity ≥99.0% (碘量滴定)
熔点Melting point 164°C - 172°C
水溶解试验solubility in water 合格
比旋光度Specific rotation [a]20/D -16 ~ -19°(c = 10%, H2O)
Storage:
密封避光保存
用途 异抗坏血酸是维生素C的一种最重要的异构体。
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