所有图片(2)

C9756

Sigma-Aldrich

胆钙化醇

≥98% (HPLC)

别名:
活化7-脱氢胆固醇, (+)-维生素 D3, 胆骨化醇, 活化7-脱氢胆甾醇
Empirical Formula (Hill Notation):
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

质量水平

200

生物来源

synthetic (organic)

测定

≥98% (HPLC)

形式

powder

technique(s)

HPLC: suitable

颜色

white to off-white

mp

83-86 °C (lit.)

储存温度

2-8°C

SMILES string

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

Gene Information

human ... VDR(7421)

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相关类别

一般描述

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。
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。

包装

1, 5 g in glass bottle

生化/生理作用

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。
在慢性肾病中经常观察到维生素 D 的缺乏。

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 P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges

分析证书

原产地证书 (CofO)

Clinical Veterinary Toxicology, 448-448 (2003)
Cholecalciferol supplementation in hemodialysis patients: effects on mineral metabolism, inflammation, and cardiac dimension parameters
Matias P, et al.
Clinical journal of the American Society of Nephrology : CJASN, CJN-06510909 (2010)
Lin Fu et al.
Journal of immunology (Baltimore, Md. : 1950), 203(5), 1198-1207 (2019-07-19)
It is increasingly recognized that excessive glucocorticoids induce fetal intrauterine growth restriction (IUGR). Placental 11β-hydroxysteroid dehydrogenase 2 (11β-HSD2), a glucocorticoid-catalyzing enzyme, prevents active glucocorticoids from maternal circulation into the fetus, thus protecting against IUGR. Previous studies demonstrated gestational LPS exposure
Patricia Fernandez-Robredo et al.
Antioxidants (Basel, Switzerland), 9(9) (2020-09-12)
Diabetic retinopathy is a vision-threatening microvascular complication of diabetes and is one of the leading causes of blindness. Oxidative stress and inflammation play a major role in its pathogenesis, and new therapies counteracting these contributors could be of great interest.
Stefan Pilz et al.
Hypertension (Dallas, Tex. : 1979), 65(6), 1195-1201 (2015-03-25)
Vitamin D deficiency is a risk factor for arterial hypertension, but randomized controlled trials showed mixed effects of vitamin D supplementation on blood pressure (BP). We aimed to evaluate whether vitamin D supplementation affects 24-hour systolic ambulatory BP monitoring values

技术文章

Vitamin D and Prevention of Human Disease

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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