D-(?)-Isoascorbic acid
Molecular Structure:
MDL:
MFCD00005378
Molecular Formula:
C6H8O6
Molecular Weight:
176.12
Alias:
異抗壞血酸; 赤藻糖酸; 異維生素 C; D-2,3,5,6-四羥基-2-己烯酸-gamma-內(nèi)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 |
分析標(biāo)準(zhǔn)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(可溶解范圍約30%)和醇。還原性強(qiáng),暴露于光線或加熱時逐漸變色(變黑)。干燥狀態(tài)下穩(wěn)定性強(qiáng),但在水溶液中遇空氣將很快分解。水溶性1g/10mL,,能溶于水、醇和吡啶,頗溶于丙醇,微溶于甘油,其化學(xué)性質(zhì)與抗壞血酸非常相似,具有同樣強(qiáng)的還原作用。
Quality Standard:
外觀Appearance 白色至黃色粉末
紅外光譜鑒別Infrared spectrometry 和對照匹配
純度Purity ≥99.0% (碘量滴定)
熔點(diǎn)Melting point 164°C - 172°C
水溶解試驗(yàn)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 異抗壞血酸是維生素C的一種最重要的異構(gòu)體。
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