Sterculic Acid methyl ester
(Synonyms: 9,10-亚甲基油酸甲酯) 目录号 : GC41518
A methyl ester form of sterculic acid
Cas No.:3220-60-8
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
Sterculic acid methyl ester is an ester form of sterculic acid , which is an inhibitor of δ9 desaturase. Sterculic acid methyl ester (0.75 mM) inhibits the growth of, and is toxic to, the bacteria R. opacus. It decreases the fatty acid content, increases the ratio of palmitate to other fatty acids, and decreases the levels of stearate and oleate in R. opacus when used at concentrations of 0.25 or 0.5 mM. Sterculic acid methyl ester (50 ppm) has a synergistic effect on increased tumor growth induced by aflatoxin Q1 in rainbow trout.
| Cas No. | 3220-60-8 | SDF | |
| 别名 | 9,10-亚甲基油酸甲酯 | ||
| Canonical SMILES | CCCCCCCCC1=C(CCCCCCCC(OC)=O)C1 | ||
| 分子式 | C20H36O2 | 分子量 | 308.5 |
| 溶解度 | Chloroform: soluble,Ether: soluble,Hexane: soluble,Methanol: soluble | 储存条件 | Store at -20°C |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 3.2415 mL | 16.2075 mL | 32.4149 mL |
| 5 mM | 0.6483 mL | 3.2415 mL | 6.483 mL |
| 10 mM | 0.3241 mL | 1.6207 mL | 3.2415 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
In vitro effects of sterculic acid on lipid biosynthesis in Rhodococcus opacus strain PD630 and isolation of mutants defective in fatty acid desaturation
FEMS Microbiol Lett 2000 Sep 1;190(1):45-50.PMID:10981688DOI:10.1111/j.1574-6968.2000.tb09260.x.
The in vivo effects of Sterculic Acid methyl ester on triacylglycerol fatty acid composition in the oleaginous, hydrocarbon-degrading bacterium R. opacus strain PD630 was investigated. Sterculic acid, a cyclopropene fatty acid and an inhibitor of the stearoyl-CoA desaturase system, strongly inhibited the synthesis of monoenic fatty acids, of saturated fatty acids with more than 16 carbon atoms and of odd-numbered fatty acids when added to the culture medium. In addition, chemical mutagenesis and the application of the penicillin enrichment technique provided mutants, which were more or less completely impaired in the desaturation of long-chain fatty acids and exhibited in some cases a similar fatty acid composition like the wild-type in the presence of Sterculic Acid methyl ester. The implications of these findings for fatty acid metabolism in R. opacus strain PD630 are discussed.
Membranes of class IIa bacteriocin-resistant Listeria monocytogenes cells contain increased levels of desaturated and short-acyl-chain phosphatidylglycerols
Appl Environ Microbiol 2002 Nov;68(11):5223-30.PMID:12406708DOI:10.1128/AEM.68.11.5223-5230.2002.
A major concern in the use of class IIa bacteriocins as food preservatives is the well-documented resistance development in target Listeria strains. We studied the relationship between leucocin A, a class IIa bacteriocin, and the composition of the major phospholipid, phosphatidylglycerol (PG), in membranes of both sensitive and resistant L. monocytogenes strains. Two wild-type strains, L. monocytogenes B73 and 412, two spontaneous mutants of L. monocytogenes B73 with intermediate resistance to leucocin A (+/-2.4 and +/-4 times the 50% inhibitory concentrations [IC50] for sensitive strains), and two highly resistant mutants of each of the wild-type strains (>500 times the IC50 for sensitive strains) were analyzed. Electrospray mass spectrometry analysis showed an increase in the ratios of unsaturated to saturated and short- to long-acyl-chain species of PG in all the resistant L. monocytogenes strains in our study, although their sensitivities to leucocin A were significantly different. This alteration in membrane phospholipids toward PGs containing shorter, unsaturated acyl chains suggests that resistant strains have cells with a more fluid membrane. The presence of this phenomenon in a strain (L. monocytogenes 412P) which is resistant to both leucocin A and pediocin PA-1 may indicate a link between membrane composition and class IIa bacteriocin resistance in some L. monocytogenes strains. Treatment of strains with Sterculic Acid methyl ester (SME), a desaturase inhibitor, resulted in significant changes in the leucocin A sensitivity of the intermediate-resistance strains but no changes in the sensitivity of highly resistant strains. There was, however, a decrease in the amount of unsaturated and short-acyl-chain PGs after treatment with SME in one of the intermediate and both of the highly resistant strains, but the opposite effect was observed for the sensitive strains. It appears, therefore, that membrane adaptation may be part of a resistance mechanism but that several resistance mechanisms may contribute to a resistance phenotype and that levels of resistance vary according to the type of mechanisms present.
Action of a cyclopropenoid fatty acid on the corpus luteum of pregnant and nonpregnant ewes
Biol Reprod 1994 Feb;50(2):253-7.PMID:8142543DOI:10.1095/biolreprod50.2.253.
The effects of a cyclopropenoid fatty acid on luteal cell function were studied. In experiment 1, pregnant ewes were laparotomized on Day 18 of gestation and ewes with CL in both ovaries were unilaterally ovariectomized. Either 1.09 mg of an extract of Sterculia foetida seeds, containing 750 micrograms Sterculic Acid methyl ester (SA, n = 6), or 1.09 mg oleic acid methyl ester (OA, n = 6) was injected into the artery supplying the ovary bearing CL. Jugular blood was collected on Day 18 before surgery and daily thereafter until Day 30 of gestation or until detection of estrus, whichever occurred first. Serum was assayed for progesterone (P4) by RIA. In experiment 2, CL were removed from ewes on Day 10 of the estrous cycle and slices of luteal tissue were incubated in medium containing 145 ng/ml of S. foetida extract (100 ng/ml SA) or 145 ng/ml OA (control) for 90 min. Then tissue was washed and reincubated in medium containing 25 micrograms 22(R)-hydroxycholesterol/ml or 25 micrograms pregnenolone/ml for 120 min. Tissue plus medium was analyzed for P4. Injection of SA or OA on Day 18 of gestation reduced (p < 0.01) serum levels of P4 within 24 h; concentrations of P4 then remained low, and relatively constant, in six OA control ewes that were pregnant until Day 30 of gestation and in three SA-treated ewes that had nonviable fetuses on Day 30. Serum concentrations of P4 in SA-treated ewes were lower than those of control ewes (p = 0.009). The remaining three ewes injected with SA exhibited estrus within 3 to 5 days after treatment.(ABSTRACT TRUNCATED AT 250 WORDS)