<生产厂家价格>

L-天门冬氨酸

L-天门冬氨酸用途

L-Aspartic acid 是一种氨基酸,被证明是一种结肠特异性药物输送的前体药物。

L-天门冬氨酸名称

[ CAS 号 ]:
56-84-8

[ 中文名 ]:
L-天门冬氨酸

[ 英文名 ]:
L-Aspartic acid

[中文别名 ]:

[英文别名 ]:

asparagic acid
1-amino-1,2-carboxyethane
δ-aspartic acid
d-Asp
QVYZ1VQ &&D or R Form
(-)-Aspartic acid
(2R)-2-Aminosuccinic acid
MFCD00002616
(2R)-2-aminobutanedioic acid
hydrogen D-aspartate

L-天门冬氨酸生物活性

[ 描述 ]:

L-Aspartic acid 是一种氨基酸,被证明是一种结肠特异性药物输送的前体药物。

[ 相关类别 ]:

天然产物 >> 其他

研究领域 >> 心血管疾病

[ 靶点 ]

Human Endogenous Metabolite

[体内研究]

L-天冬氨酸被证明是结肠特异性药物的合适前药[1]。通过分别预先给予100mM L-天冬氨酸和100mM L-Glu,在5分钟时保留在脑中的L- [3H] Asp增加206和178％,而100mM D-Asp不影响L- [ 3H] Asp外排运输。通过分别与100mM L-天冬氨酸和100mM L-Glu共同给予L- [3H] Glu在20分钟时的值增加145和156％,但不是通过D-Asp。有趣的是,L-天冬氨酸在BBB上的表观流出速率比L-Glu快7倍[2]。

[参考文献]

[1]. Leopold CS, et al. In vivo pharmacokinetic study for the assessment of poly(L-aspartic acid) as a drug carrier for colon-specific drug delivery. J Pharmacokinet Biopharm. 1995 Aug;23(4):397-406.

[2]. Hosoya K, et al. Blood-brain barrier produces significant efflux of L-aspartic acid but not D-aspartic acid: in vivo evidence using the brain efflux index method. J Neurochem. 1999 Sep;73(3):1206-11.

[相关活性小分子]

L-天门冬氨酸物理化学性质

[ 密度 ]:
1.5±0.1 g/cm3

[ 沸点 ]:
264.1±30.0 °C at 760 mmHg

[ 熔点 ]:
>300 °C (dec.)(lit.)

[ 分子式 ]:
C₄H₇NO₄

[ 分子量 ]:
133.103

[ 闪点 ]:
113.5±24.6 °C

[ 精确质量 ]:
133.037506

[ PSA ]:
100.62000

[ LogP ]:
-0.67

[ 外观性状 ]:
白色结晶粉末

[ 蒸汽压 ]:
0.0±1.1 mmHg at 25°C

[ 折射率 ]:
1.531

[ 储存条件 ]:
通风低温干燥

[ 水溶解性 ]:
5 g/L (25 ºC)

L-天门冬氨酸MSDS

详细MSDS(安全技术说明书)

L-天门冬氨酸毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: CI9098500

CHEMICAL NAME :: Aspartic acid, L-

CAS REGISTRY NUMBER :: 56-84-8

BEILSTEIN REFERENCE NO. :: 1723530

LAST UPDATED :: 199701

DATA ITEMS CITED :: 7

MOLECULAR FORMULA :: C4-H7-N-O4

MOLECULAR WEIGHT :: 133.12

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 6 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 25079 mg/kg/7D-C

TOXIC EFFECTS :: Liver - other changes Biochemical - Metabolism (Intermediary) - lipids including transport

MUTATION DATA

TYPE OF TEST :: Sister chromatid exchange

TEST SYSTEM :: Human Lymphocyte

DOSE/DURATION :: 10 mg/L

REFERENCE :: MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 372,75,1996 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 81861 No. of Facilities: 803 (estimated) No. of Industries: 3 No. of Occupations: 3 No. of Employees: 5939 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 81861 No. of Facilities: 634 (estimated) No. of Industries: 3 No. of Occupations: 11 No. of Employees: 9033 (estimated) No. of Female Employees: 6545 (estimated)

L-天门冬氨酸安全信息

[ 个人防护装备 ]:
dust mask type N95 (US);Eyeshields;Gloves

[ 危害码 (欧洲) ]:
Xi: Irritant;Xn: Harmful;

[ 风险声明 (欧洲) ]:
R36

[ 安全声明 (欧洲) ]:
S26-S24/25-S22

[ 危险品运输编码 ]:
NONH for all modes of transport

[ WGK德国 ]:
2

[ RTECS号 ]:
CI9098500

[ 海关编码 ]:
29224995

L-天门冬氨酸合成路线

详细合成路线

L-天门冬氨酸上下游产品

L-天门冬氨酸上游产品

L-天门冬氨酸下游产品

L-天门冬氨酸制备

1.左旋天冬氨酸的制法有合成法和发酵法。1.合成法主要是以马来酸或富马酸或它们的酯为原料，在加压下用氨处理，然后水解。较容易合成得到外消旋天冬氨酸，但至今还没有理想的拆分外消旋体的方法。2.发酵法在酶作用下，将富马酸与氨加成，可高收率地得到产品。采用这种方法只生成左旋体，收率高，因此是工业生产的主要方法。

2.由反丁烯二酸、氨在三叶草假单胞菌或产氨短杆菌的天冬氨酸酶作用下得到。

3.以马来酸、富马酸或它们的酯为原料，在酶的作用下与氨加成。反应如下：

4.烟草：BU，22；FC，21。

L-天门冬氨酸海关

[ 海关编码 ]: 2922499990

[ 中文概述 ]:
2922499990 其他氨基酸及其酯及它们的盐（含有一种以上含氧基的除外）. 增值税率:17.0% 退税率:9.0% 监管条件:AB(入境货物通关单,出境货物通关单) 最惠国关税:6.5% 普通关税:30.0%

[ 申报要素 ]: 品名, 成分含量, 用途, 乙醇胺及其盐应报明色度, 乙醇胺及其盐应报明包装

[ 监管条件 ]: A.入境货物通关单 B.出境货物通关单

[ 检验检疫 ]: P.进境动植物、动植物产品检疫 Q.出境动植物、动植物产品检疫 R.进口食品卫生监督检验 S.出口食品卫生监督检验 M.进口商品检验 N.出口商品检验

[ Summary ]:
HS:2922499990 other amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:6.5% General tariff:30.0%

L-天门冬氨酸文献

Rad23 interaction with the proteasome is regulated by phosphorylation of its ubiquitin-like (UbL) domain.

J. Mol. Biol. 426(24) , 4049-60, (2014)

Rad23 was identified as a DNA repair protein, although a role in protein degradation has been described. The protein degradation function of Rad23 contributes to cell cycle progression, stress respons...

Mechanism of chemical activation of sodium chloride in the presence of amino acids.

Food Chem. 166 , 301-8, (2014)

Sodium chloride has been shown to promote chlorination of glycerol during thermal processing. However, the detailed mechanism of this reaction is not well understood. Preliminary experiments have indi...

EAAT2 (GLT-1; slc1a2) glutamate transporters reconstituted in liposomes argues against heteroexchange being substantially faster than net uptake.

J. Neurosci. 34(40) , 13472-85, (2014)

The EAAT2 glutamate transporter, accounts for >90% of hippocampal glutamate uptake. Although EAAT2 is predominantly expressed in astrocytes, ∼10% of EAAT2 molecules are found in axon terminals. Despit...

更多文献