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关键词:       仅模糊查询
CAS: 738-70-5
分子式: C14H18N4O3
分子量: 290.32
中文名称: 
甲氧苄啶
三甲氧苄胺嘧啶
三甲氧苄氨嘧啶
磺胺增效剂
抗菌增效剂
甲氧苄氨嘧啶
英文名称: 
5-[(3,4,5-Trimethoxphenyl)methyl]-2,4-pyrimidine-diamine
2,4-diamino-5-(3,4,5-trimethoxybenzyl)-pyrimidin
2,4-diamino-5-(3,4,5-trimethoxybenzyl)pyrimidine
5-((3,4,5-trimethoxyphenyl)-methyl)-4-pyrimidinediamine
5-(3,4,5-trimethoxybenzyl)-2,4-diaminopyrimidine
5-(3,4,5-trimethoxyphenyl)methyl)-2,4-pyrimidinediamine
bw 56-72
monoprim
monotrim
nsc-106568
proloprim
syraprim
tiempe
trimethoprim
trimetoprim
trimopan
trimpex
uretrim
wellcoprim
wr 5949
展开更多英文名
性质描述: 白色或类白色结晶性粉。熔点199-203℃,25℃的溶解度(g/100ml):DMA13.86,苄醇7.29,氯仿1.82,甲醇1.21,水0.04,醚0.003,苯0.002。无臭,味苦。
生产方法: 三甲氧基苯甲醛经缩合、环合而得。
用途: 新型口服广谱抗菌药物。抗菌谱与磺胺药物相似而效力较强,对多种革兰氏阳性和阴性细菌有效。由于细菌对本品将易产生耐药性,故不宜单独作为抗菌药使用。甲氧苄啶与磺胺药合用可使抗菌作用增强数倍至数十倍。该品主要作磺安类药的增效药。一般按1:5的比例使用。也可作为兽药,治疗禽率大肠肝菌引起的败血症,鸡白痢,禽伤寒,霍乱,呼吸系统继发性细菌感染等。还可用于球虫病的治疗。
推荐供应商
货号品牌产品名称规格包装、参考价格详情
T2286TCITrimethoprim>98.0%(T)(HPLC)420元/25G;   990元/100G;   2990元/500G;   展开

基本信息

纯度/分析方法>98.0%(T)(HPLC)
分子式/分子量C14H18N4O3 = 290.32
外观与形状(20℃)固体
Reaxys-RN625127
PubChem物质ID87558288
Merck Index (14)9709

技术规格

AppearanceWhite to Almost white powder to crystal
Purity(HPLC)min. 98.0 area%
Purity(Nonaqueous Titration)min. 98.0 %
Melting point199.0 to 205.0 ℃
Solubility in hot Methanolalmost transparency

物性(参考值)

熔点202 ℃
水溶性不溶
在水中的溶解度400 mg/l   25 ℃
溶解性(微溶于)氯仿,甲醇
溶解性(不溶于)苯,乙醚

相关法规

RTECS#UV8225000
453948J&KTrimethoprim98%154元/5G;   613元/25G;   展开

基本信息

分子式C14H18N4O3
分子量290.32
熔点199-205
MDL编码MFCD00036761
Beilstein625127
Merck14,9709
EINECS 编号212-006-2
存储条件Store at 2-8℃

一般描述

化学结构:嘧啶

应用

甲氧苄啶是最主要的抗细菌剂。 它有二氢叶酸还原酶抑制活性和原核酶选择性。 它被用来治疗尿道感染,轻度急性前列腺炎,复发性膀胱炎,怀孕期间无症状菌尿和呼吸道感染。主要作为抗细菌剂。 二氢叶酸还原酶抑制活性和原核酶选择性。

生化/生理作用

甲氧苄啶和磺胺甲恶唑结合,通过阻碍核苷酸合成,干扰细菌细胞叶酸细胞代谢。 甲氧苄啶和二氢叶酸还原酶结合,抑制二氢叶酸(DHF)和四氢叶酸(THF)还原。THF是胸腺嘧啶合成途径基本前体,干扰该途径,抑制细菌DNA合成。

其他说明

保持容器密闭,置于干燥通风处。置于干燥处。

安全信息

防范说明P262
WGK3
RTECSUV8225000
J63053Alfa AesarTrimethoprim333元/1g;   1334元/5g;   3320元/25g;   展开

应用
An antibacterial and inhibitor of formylation. Dihydrofolate reductase inhibitor with selectivity for the prokaryote enzyme.Trimethoprim is an antibiotic involved in the treatment of urinary tract infections, middle ear infections and traveler?’s diarrhea. It is associated with sulfamethoxazole and interferes with the cellular metabolism of folic acid in the bacterial cell by blocking the biosynthesis of nucleotides. Furthermore, It is also used to treat and prevent Pneumocystis jiroveci pneumonia.

备注
Sensitive to light. Incompatible with strong oxidizing agents. Sore in a cool place.

基本信息

MDL
MFCD00036761

EINECS
212-006-2

分子式
C14H18N4O3

分子量
290.32

熔点
199-203°

灵敏度
Keep Cold.

形态
Powder

溶解性
Trimethoprim is soluble in water at 0.4 mg/ml. It is also soluble in DMSO at 50 mg/ml and chloroform at 18.2 mg/ml. Soluble in methanol, chloroform, dimethyl sulfoxide, N,N-dimethylacetamide, benzyl alcohol, and propylene glycol. Insoluble in water, diethyl ether and benzene.

Beilstein
625127

Merck
14,9709

安全信息

RTECS
UV8225000

TSCA

R10838Alfa AesarTrimethoprim Standard solution100ppm335元/1ml;   展开

安全信息

危险等级
3

R11925Alfa AesarTrimethoprim,1000ppm704元/1ml;   展开

安全信息

危险等级
3

Y0000684Trimethoprim for system suitabilityEuropean Pharmacopoeia (EP) Reference Standard1277.32元/ ;   展开

产品说明

一般描述

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the Issuing Pharmacopoeia. For further information and support please go to the website of the issuing Pharmacopoeia.

应用

主要作为抗细菌剂。 二氢叶酸还原酶抑制活性和原核酶选择性。

包装

Unit quantity: 0.001 mg. Subject to change. The product is delivered as supplied by the issuing Pharmacopoeia. For the current unit quantity, please visit the EDQM reference substance catalogue.

注意

Please find SDS provided by EDQM here..

其他说明

Sales restrictions may apply.

基本信息

经验(实验)分子式C14H18N4O3
分子量290.32
Beilstein625127
MDL编号MFCD00036761
PubChem化学物质编号329831095
NACRESNA.24

产品性质

等级pharmaceutical primary standard
manufacturer/tradenameEDQM
application(s)pharmaceutical (small molecule)
格式neat
储存温度2-8℃
SMILES stringCOc1cc(Cc2cnc(N)nc2N)cc(OC)c1OC
InChI1S/C14H18N4O3/c1-19-10-5-8(6-11(20-2)12(10)21-3)4-9-7-17-14(16)18-13(9)15/h5-7H,4H2,1-3H3,(H4,15,16,17,18)
InChI keyIEDVJHCEMCRBQM-UHFFFAOYSA-N

安全信息

象形图GHS06GHS08
警示用语:Danger
危险声明H301 - H361d
预防措施声明P202 - P264 - P270 - P280 - P301 + P310 - P405
危险分类Acute Tox. 3 Oral - Repr. 2
储存分类代码6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGKWGK 3
闪点(F)Not applicable
闪点(C)Not applicable
T7883Sigma-AldrichTrimethoprim≥98.5%1742.3元/5 g;   6684.71元/25 g;   14390.2元/100 g;   展开

产品说明

一般描述

化学结构:嘧啶

应用

甲氧苄啶是最主要的抗细菌剂。 它有二氢叶酸还原酶抑制活性和原核酶选择性。 它被用来治疗尿道感染,轻度急性前列腺炎,复发性膀胱炎,怀孕期间无症状菌尿和呼吸道感染。
主要作为抗细菌剂。 二氢叶酸还原酶抑制活性和原核酶选择性。

生化/生理作用

甲氧苄啶和磺胺甲恶唑结合,通过阻碍核苷酸合成,干扰细菌细胞叶酸细胞代谢。 甲氧苄啶和二氢叶酸还原酶结合,抑制二氢叶酸(DHF)和四氢叶酸(THF)还原。THF是胸腺嘧啶合成途径基本前体,干扰该途径,抑制细菌DNA合成。

包装

5G,25G,100G

其他说明

保持容器密闭,置于干燥通风处。置于干燥处。

基本信息

经验(实验)分子式C14H18N4O3
分子量290.32
Beilstein625127
EC 号212-006-2
MDL编号MFCD00036761
PubChem化学物质编号24278201
NACRESNA.85

产品性质

质量水平200
测定≥98% (HPLC)
形式powder
储存条件 (Keep container tightly closed in a dry and well-ventilated place. Keep in a dry place.)
颜色 white to off-white
溶解性chloroform/ethanol (1:1): soluble 50 mg/mL
DMSO: soluble
作用机制DNA synthesis | interferes
enzyme | inhibits
抗生素抗菌谱Gram-negative bacteria
Gram-positive bacteria
mycobacteria
储存温度2-8℃
SMILES stringCOc1cc(Cc2cnc(N)nc2N)cc(OC)c1OC
InChI1S/C14H18N4O3/c1-19-10-5-8(6-11(20-2)12(10)21-3)4-9-7-17-14(16)18-13(9)15/h5-7H,4H2,1-3H3,(H4,15,16,17,18)
InChI keyIEDVJHCEMCRBQM-UHFFFAOYSA-N
Gene Informationhuman ... DHFRP1(573971), KCNH1(3756)
rat ... Dhfr(24312)

安全信息

象形图GHS06GHS08
警示用语:Danger
危险声明H301 - H361d
预防措施声明P202 - P264 - P270 - P280 - P301 + P310 - P405
危险分类Acute Tox. 3 Oral - Repr. 2
储存分类代码6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGKWGK 3
闪点(F)Not applicable
闪点(C)Not applicable
个人防护装备Eyeshields, Gloves, type N95 (US)
92131Sigma-AldrichTrimethoprim≥99.0% (HPLC)603.83元/1 g;   1782.29元/5 g;   6997.08元/25 g;   展开

产品说明

一般描述

化学结构:嘧啶

应用

甲氧苄啶主要用作抗菌剂。用于结核分枝杆菌的敏感性研究流感嗜血杆菌的耐药性研究
主要作为抗细菌剂。 二氢叶酸还原酶抑制活性和原核酶选择性。

生化/生理作用

甲氧苄啶是一种二氢叶酸还原酶抑制剂,对原核生物酶具有选择性。
通过原核生物特异的二氢叶酸还原酶(DHFR)抑制四氢叶酸的合成。

包装

1g、5g、25g

其他说明

将容器密闭保存在干燥通风的地方。对光敏感。在惰性气体下储存。对水分敏感。产品对光和水分敏感。

基本信息

经验(实验)分子式C14H18N4O3
分子量290.32
Beilstein625127
EC 号212-006-2
MDL编号MFCD00036761
PubChem化学物质编号57653467
NACRESNA.85

产品性质

质量水平200
生物来源synthetic
测定≥99.0% (HPLC)
形式powder
质量crystallized
颜色 white to yellow
mp199-203 ℃
作用机制DNA synthesis | interferes
enzyme | inhibits
抗生素抗菌谱Gram-negative bacteria
Gram-positive bacteria
mycobacteria
储存温度2-8℃
SMILES stringCOc1cc(Cc2cnc(N)nc2N)cc(OC)c1OC
InChI1S/C14H18N4O3/c1-19-10-5-8(6-11(20-2)12(10)21-3)4-9-7-17-14(16)18-13(9)15/h5-7H,4H2,1-3H3,(H4,15,16,17,18)
InChI keyIEDVJHCEMCRBQM-UHFFFAOYSA-N
Gene Informationhuman ... DHFRP1(573971), KCNH1(3756)
rat ... Dhfr(24312)

安全信息

象形图GHS07
警示用语:Warning
危险声明H302
预防措施声明P264 - P270 - P301 + P312 - P501
危险分类Acute Tox. 4 Oral
储存分类代码11 - Combustible Solids
WGKWGK 3
闪点(F)Not applicable
闪点(C)Not applicable
个人防护装备Eyeshields, Gloves, type N95 (US)
46984SupelcoTrimethoprimVETRANAL®, analytical standard761.09元/250 MG;   展开

产品说明

一般描述

化学结构:嘧啶

应用

有关合适仪器技术的更多信息,请参考产品分析证书。如需进一步支持,请联系技术服务。
主要作为抗细菌剂。 二氢叶酸还原酶抑制活性和原核酶选择性。

法律信息

VETRANAL is a registered trademark of sigma-aldrich Chemie GmbH

基本信息

经验(实验)分子式C14H18N4O3
分子量290.32
Beilstein625127
EC 号212-006-2
MDL编号MFCD00036761
PubChem化学物质编号329757283
NACRESNA.24

产品性质

质量水平100
等级analytical standard
agencyEPA 1694
产品线VETRANAL®
保质期limited shelf life, expiry date on the label
technique(s)HPLC: suitable
gas chromatography (GC): suitable
抗生素抗菌谱Gram-negative bacteria
Gram-positive bacteria
mycoplasma
application(s)clinical testing
格式neat
作用机制DNA synthesis | interferes
enzyme | inhibits
储存温度2-8℃
SMILES stringCOc1cc(Cc2cnc(N)nc2N)cc(OC)c1OC
InChI1S/C14H18N4O3/c1-19-10-5-8(6-11(20-2)12(10)21-3)4-9-7-17-14(16)18-13(9)15/h5-7H,4H2,1-3H3,(H4,15,16,17,18)
InChI keyIEDVJHCEMCRBQM-UHFFFAOYSA-N

安全信息

象形图GHS06GHS08
警示用语:Danger
危险声明H301 - H361d
预防措施声明P202 - P264 - P270 - P280 - P301 + P310 - P405
危险分类Acute Tox. 3 Oral - Repr. 2
储存分类代码6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGKWGK 3
闪点(F)Not applicable
闪点(C)Not applicable
个人防护装备Eyeshields, Gloves, type N95 (US)
PHR1056SupelcoTrimethoprimPharmaceutical Secondary Standard; Certified Reference Material1359.83元/1 G;   展开

产品说明

一般描述

用于质量控制的已认证的药物二级标准,为制药实验室和制造商提供了药典基本标准的一种方便且成本效益好的替代品。甲氧苄啶是一种合成的抗菌剂,对大多数需氧革兰氏阴性和革兰氏阳性细菌具有体外抗菌活性。它的作用方式涉及到抑制二氢叶酸还原酶,这是一种可在微生物和真核细胞中催化将二氢叶酸还原为四氢叶酸的酶。

应用

甲氧苄啶可作为药物参考标准品,通过色谱以及可见光和紫外分光光度技术对药物制剂中的分析物进行测定。
这些二级标准品是合格的认证标准物质(CRM)。它们适用于多种分析应用,包括但不限于药物释放测试、药物的定性和定量分析方法开发、食品和饮料质量控制检测以及其他校准需求。
主要作为抗细菌剂。 二氢叶酸还原酶抑制活性和原核酶选择性。

分析说明

这些二级标准品可追溯至USP、EP(PhEur)和BP一级标准品。

其他说明

该认证参考物质 (CRM) 按照 ISO 17034ISO/IEC 17025 生产和认证。所有关于此 CRM 的信息均记载在分析证书中。

附注

要查看该材料的分析证书示例,请在下面的栏位中输入 LRAA7172。这只是一个示例证书,可能不是您收到的批次。

基本信息

经验(实验)分子式C14H18N4O3
分子量290.32
Beilstein625127
EC 号212-006-2
MDL编号MFCD00036761
PubChem化学物质编号329823086
NACRESNA.24

产品性质

质量水平300
等级certified reference material
pharmaceutical secondary standard
CofAcurrent certificate can be downloaded
technique(s)HPLC: suitable
gas chromatography (GC): suitable
application(s)pharmaceutical (small molecule)
格式neat
药典可追溯性traceable to BP 344
traceable to PhEur T220000
traceable to USP 1692505
储存温度2-30℃
SMILES stringCOc1cc(Cc2cnc(N)nc2N)cc(OC)c1OC
InChI1S/C14H18N4O3/c1-19-10-5-8(6-11(20-2)12(10)21-3)4-9-7-17-14(16)18-13(9)15/h5-7H,4H2,1-3H3,(H4,15,16,17,18)
InChI keyIEDVJHCEMCRBQM-UHFFFAOYSA-N

安全信息

象形图GHS06GHS08
警示用语:Danger
危险声明H301 - H361d
预防措施声明P202 - P264 - P270 - P280 - P301 + P310 - P405
危险分类Acute Tox. 3 Oral - Repr. 2
储存分类代码6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGKWGK 3
闪点(F)Not applicable
闪点(C)Not applicable
T2200000TrimethoprimEuropean Pharmacopoeia (EP) Reference Standard1572.27元/ ;   展开

产品说明

一般描述

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

应用

主要作为抗细菌剂。 二氢叶酸还原酶抑制活性和原核酶选择性。

包装

Unit quantity: 50 mg. Subject to change. The product is delivered as supplied by the issuing Pharmacopoeia. For the current unit quantity, please visit the EDQM reference substance catalogue.

注意

Please find SDS provided by EDQM here..

其他说明

Sales restrictions may apply.

基本信息

经验(实验)分子式C14H18N4O3
分子量290.32
Beilstein625127
MDL编号MFCD00036761
PubChem化学物质编号329826703
NACRESNA.24

产品性质

等级pharmaceutical primary standard
manufacturer/tradenameEDQM
application(s)pharmaceutical (small molecule)
格式neat
储存温度2-8℃
SMILES stringCOc1cc(Cc2cnc(N)nc2N)cc(OC)c1OC
InChI1S/C14H18N4O3/c1-19-10-5-8(6-11(20-2)12(10)21-3)4-9-7-17-14(16)18-13(9)15/h5-7H,4H2,1-3H3,(H4,15,16,17,18)
InChI keyIEDVJHCEMCRBQM-UHFFFAOYSA-N

安全信息

象形图GHS06GHS08
警示用语:Danger
危险声明H301 - H361d
预防措施声明P202 - P264 - P270 - P280 - P301 + P310 - P405
危险分类Acute Tox. 3 Oral - Repr. 2
储存分类代码6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGKWGK 3
闪点(F)Not applicable
闪点(C)Not applicable
16967SupelcoTrimethoprimcertified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland1755.66元/100 mg;   展开

产品说明

一般描述

该有证标准物质(CRM)是根据ISO/IEC 17025ISO 17034生产和认证的。该CRM可追溯到来自NMI的原材料,如 NIST或NMIJ。
证书上给出了定量核磁共振法认证的内容,包括不确定性和失效日期。
请访问http://www.sigma-aldrich.com下载您的证书。

应用

主要作为抗细菌剂。 二氢叶酸还原酶抑制活性和原核酶选择性。

法律信息

TraceCERT is a registered trademark of sigma-aldrich Co. LLC

基本信息

经验(实验)分子式C14H18N4O3
分子量290.32
Beilstein625127
EC 号212-006-2
MDL编号MFCD00036761
NACRESNA.24

产品性质

质量水平300
等级certified reference material
TraceCERT®
产品线TraceCERT®
保质期limited shelf life, expiry date on the label
technique(s)gas chromatography (GC): suitable
application(s)forensics and toxicology
pharmaceutical (small molecule)
格式neat
运输wet ice
储存温度2-8℃
SMILES stringCOc1cc(Cc2cnc(N)nc2N)cc(OC)c1OC
InChI1S/C14H18N4O3/c1-19-10-5-8(6-11(20-2)12(10)21-3)4-9-7-17-14(16)18-13(9)15/h5-7H,4H2,1-3H3,(H4,15,16,17,18)
InChI keyIEDVJHCEMCRBQM-UHFFFAOYSA-N

安全信息

象形图GHS06GHS08
警示用语:Danger
危险声明H301 - H361d
预防措施声明P202 - P264 - P270 - P280 - P301 + P310 - P405
危险分类Acute Tox. 3 Oral - Repr. 2
储存分类代码6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGKWGK 3
闪点(F)Not applicable
闪点(C)Not applicable
BP344TrimethoprimBritish Pharmacopoeia (BP) Reference Standard1952.55元/100 MG;   展开

产品说明

一般描述

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

应用

主要作为抗细菌剂。 二氢叶酸还原酶抑制活性和原核酶选择性。

包装

Unit quantity: 100 mg. Subject to change. The product is delivered as supplied by the issuing Pharmacopoeia. For the current unit quantity please visit British Pharmacopoeia

其他说明

Sales restrictions may apply.

基本信息

经验(实验)分子式C14H18N4O3
分子量290.32
Beilstein625127
EC 号212-006-2
MDL编号MFCD00036761
NACRESNA.24

产品性质

等级pharmaceutical primary standard
manufacturer/tradenameBP
格式neat
储存温度2-8℃
SMILES stringCOc1cc(Cc2cnc(N)nc2N)cc(OC)c1OC
InChI1S/C14H18N4O3/c1-19-10-5-8(6-11(20-2)12(10)21-3)4-9-7-17-14(16)18-13(9)15/h5-7H,4H2,1-3H3,(H4,15,16,17,18)
InChI keyIEDVJHCEMCRBQM-UHFFFAOYSA-N

安全信息

象形图GHS06GHS08
警示用语:Danger
危险声明H301 - H361d
预防措施声明P202 - P264 - P270 - P280 - P301 + P310 - P405
危险分类Acute Tox. 3 Oral - Repr. 2
储存分类代码6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGKWGK 3
闪点(F)Not applicable
闪点(C)Not applicable
1692505USPTrimethoprimUnited States Pharmacopeia (USP) Reference Standard3231.47元/300 MG;   展开

产品说明

一般描述

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

应用

主要作为抗细菌剂。 二氢叶酸还原酶抑制活性和原核酶选择性。

分析说明

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

其他说明

USP issued SDS can be found here.
Sales restrictions may apply.

基本信息

经验(实验)分子式C14H18N4O3
分子量290.32
Beilstein625127
MDL编号MFCD00036761
PubChem化学物质编号329751414
NACRESNA.24

产品性质

等级pharmaceutical primary standard
manufacturer/tradenameUSP
application(s)pharmaceutical (small molecule)
格式neat
SMILES stringCOc1cc(Cc2cnc(N)nc2N)cc(OC)c1OC
InChI1S/C14H18N4O3/c1-19-10-5-8(6-11(20-2)12(10)21-3)4-9-7-17-14(16)18-13(9)15/h5-7H,4H2,1-3H3,(H4,15,16,17,18)
InChI keyIEDVJHCEMCRBQM-UHFFFAOYSA-N

安全信息

象形图GHS06GHS08
警示用语:Danger
危险声明H301 - H361d
预防措施声明P202 - P264 - P270 - P280 - P301 + P310 - P405
危险分类Acute Tox. 3 Oral - Repr. 2
储存分类代码6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGKWGK 3
闪点(F)Not applicable
闪点(C)Not applicable
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