Merck
CN

C9756

Sigma-Aldrich

胆钙化醇

≥98% (HPLC)

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别名:
(+)-维生素 D3, 活化7-脱氢胆固醇, 活化7-脱氢胆甾醇, 胆骨化醇
经验公式(希尔记法):
C27H44O
CAS号:
分子量:
384.64
Beilstein:
2339331
EC 号:
MDL编号:
eCl@ss:
34058003
PubChem化学物质编号:
NACRES:
NA.26

生物来源

synthetic (organic)

质量水平

检测方案

≥98% (HPLC)

形式

powder

技术

HPLC: suitable

颜色

white to off-white

mp

83-86 °C (lit.)

储存温度

2-8°C

SMILES字符串

CC(C)CCC[C@@H](C)[C@@]1([H])CC[C@@]([C@]1(C)CCC/2)([H])C2=C\C=C(C[C@@H](O)CC3)/C3=C

InChI

1S/C27H44O/c1-19(2)8-6-9-21(4)25-15-16-26-22(10-7-17-27(25,26)5)12-13-23-18-24(28)14-11-20(23)3/h12-13,19,21,24-26,28H,3,6-11,14-18H2,1-2,4-5H3/b22-12+,23-13-/t21-,24+,25-,26+,27-/m1/s1

InChI key

QYSXJUFSXHHAJI-YRZJJWOYSA-N

基因信息

human ... VDR(7421)

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相关类别

一般描述

胆钙化醇作为一种激素前体,因为它需要两个代谢阶段:首先是 25-羟胆钙化醇;然后加入 1α,25-二羟胆钙化醇。一个单位(U.S.P. 或国际)定义为 USP 维生素 D 参考标准中含有 0.025 μg 维生素D3 的活性。
胆钙化醇来源于饮食或皮肤接触紫外线。口服维生素 D3 容易被吸收,并储存在脂肪组织中。

生化/生理作用

在慢性肾病中经常观察到维生素 D 的缺乏。
维生素 D 借以发挥作用的受体是配体依赖性转录因子超家族的成员。调控正常细胞和癌细胞的增殖和分化。对乳腺癌、结肠癌和前列腺癌细胞具有抗增殖和抗转移作用。肠和骨骼中的活化维生素 D 受体维持着钙的吸收和平衡。

储存及稳定性

胆钙化醇 C9756 在氩气下包装。如果未开封储存在 2-8°C 且避光,则本产品可以稳定保存至少三年。未使用的部分应储存在氮气或氩气下。在冰箱温度下,在棕色-抽真空安瓿中储存一年后,变质可忽略不计。它会在几天内被潮湿的空气氧化和灭活。

象形图

Skull and crossbonesHealth hazard

警示用语:

Danger

危险分类

Acute Tox. 2 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - STOT RE 1 Oral

储存分类代码

6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 2

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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商品

Vitamin D2 (ergocalciferol) is naturally synthesized from ergosterol by invertebrates, fungi, and plants in response to ultraviolet B irradiation, while vitamin D3 synthesis (cholecalciferol) is uniquely initiated in the skin of vertebrates. During sun exposure, ultraviolet B photons are absorbed by 7-dehydrocholesterol, which is found within the plasma membranes of epidermal and dermal skin layers. This reaction yields an unstable derivative of 7-dehydrocholesterol, named precholecalcitrol, which rapidly rearranges to vitamin D3. Vitamin D binding protein (DBP) is a carrier protein responsible for drawing vitamin D3 from the plasma membrane into the dermal capillaries within the extracellular space.

Vitamin D2 (ergocalciferol) is naturally synthesized from ergosterol by invertebrates, fungi, and plants in response to ultraviolet B irradiation, while vitamin D3 synthesis (cholecalciferol) is uniquely initiated in the skin of vertebrates. During sun exposure, ultraviolet B photons are absorbed by 7-dehydrocholesterol, which is found within the plasma membranes of epidermal and dermal skin layers. This reaction yields an unstable derivative of 7-dehydrocholesterol, named precholecalcitrol, which rapidly rearranges to vitamin D3. Vitamin D binding protein (DBP) is a carrier protein responsible for drawing vitamin D3 from the plasma membrane into the dermal capillaries within the extracellular space.

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