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CAS RN: 41294-56-8 | 产品编码: A3125
Alfacalcidol
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| 产品编码 | A3125 |
| 纯度/分析方法 | >95.0%(HPLC) |
| 分子式/分子量 | C__2__7H__4__4O__2 = 400.65 |
| 外观与形状（20°C） | 固体 |
| 储存温度 | 冷冻 (-20°C) |
| 储存在惰性气体下 | 存放于惰性气体之中 |
| 应避免的情况 | 空气,加热 |
| 包装和容器 | 10MG-Glass Bottle with Plastic Insert （查看图片）, 50MG-Glass Bottle with Plastic Insert （查看图片） |
| CAS RN | 41294-56-8 |
| Reaxys-RN | 2064794 |
| PubChem物质ID | 354335206 |
| Merck Index (14) | 4819 |
| MDL编号 | MFCD00868328 |
技术规格
| Appearance | White to Almost white powder to crystal |
| Purity(HPLC) | min. 95.0 area% |
| Melting point | 136.0 to 140.0 °C |
| Specific rotation [a]20/D | +34.0 to +38.0 deg(C=0.3, CHCL3) |
物性（参考值）
| 熔点 | 136 °C |
| 比旋光度 [α]D | 36° (C=0.3,CHCl3) |
| 最大吸收波长 | 264 nm (Diethyl ether) |
GHS
| 象形图 |
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| 信号词 | Danger |
| 危险性说明 | H300 + H310 + H330 : Fatal if swallowed, in contact with skin or if inhaled. |
| 防范说明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P260 : Do not breathe dust/ fume/ gas/ mist/ vapors/ spray. P270 : Do not eat, drink or smoke when using this product. P262 : Do not get in eyes, on skin, or on clothing. P271 : Use only outdoors or in a well-ventilated area. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ protective clothing. P284 : Wear respiratory protection. P361 + P364 : Take off immediately all contaminated clothing and wash it before reuse. P301 + P310 + P330 : IF SWALLOWED: Immediately call a POISON CENTER/doctor. Rinse mouth. P302 + P352 + P310 : IF ON SKIN: Wash with plenty of water. Immediately call a POISON CENTER/doctor. P304 + P340 + P310 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor. P403 + P233 : Store in a well-ventilated place. Keep container tightly closed. P405 : Store locked up. |
相关法规
运输信息
| UN编号 | UN2811 |
| 类别 | 6.1 |
| 包装类别 | II |
| HS编码* | 2906.19-000 |
应用
Alfacalcidol: A Prodrug of Calcitriol, the Active Form of Vitamin D3
Alfacalcidol (1α-hydroxyvitamin D3) is a prodrug of calcitriol (1α,25-dihydroxyvitamin D3) [C3078] which is the active form of vitamin D3 (cholecalciferol) [
C0314]. The natural supply of vitamin D3 in human being mainly depends on ultraviolet light for conversion of 7-dehydrocholesterol [CAS: 434-16-2] to vitamin D3 in the skin. The transformation (hydroxylation at position 25) of vitamin D3 is catalyzed by enzymes in the liver and the kidney to produce calcitriol. Calcitriol is active in the regulation of the absorption of calcium from the gastrointestinal tract.
However, alfacalcidol is rapidly hydroxylated to calcitriol in the liver, effectively bypassing the critical renal metabolic conversion. Therefore, alfacalcidol is effective for patients with chronic renal failure to remedy vitamin D3 deficiency, and to increase the bone resorption and the bone formation. (The product is for research purpose only.)
C0314]. The natural supply of vitamin D3 in human being mainly depends on ultraviolet light for conversion of 7-dehydrocholesterol [CAS: 434-16-2] to vitamin D3 in the skin. The transformation (hydroxylation at position 25) of vitamin D3 is catalyzed by enzymes in the liver and the kidney to produce calcitriol. Calcitriol is active in the regulation of the absorption of calcium from the gastrointestinal tract.
However, alfacalcidol is rapidly hydroxylated to calcitriol in the liver, effectively bypassing the critical renal metabolic conversion. Therefore, alfacalcidol is effective for patients with chronic renal failure to remedy vitamin D3 deficiency, and to increase the bone resorption and the bone formation. (The product is for research purpose only.)
References
- Metabolism of 1α-hydroxyvitamin D3 to 1α,25-dihydroxyvitamin D3 in perfused rat liver
- Rate of reversal of hypercalcaemia and hypercalciuria induced by vitamin D and its 1alpha-hydroxylated derivatives.
- Alfacalcidol inhibits bone resorption and stimulates formation in an ovariectomized rat model of osteoporosis: distinct actions from estrogen
- A new look at the most successful prodrugs for active vitamin D (D hormone): alfacalcidol and doxercalciferol (a review)
- Routine isotope-dilution liquid chromatography-tandem mass spectrometry assay for simultaneous measurement of the 25-hydroxy metabolites of vitamins D2 and D3
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