3-Methylcatechol
(Synonyms: 3-甲基邻苯二酚) 目录号 : GC61433
3-Methylcatechol是一种化学合成中的分子砌块，可由PseudomonasputidaMC2产生。
Cas No.:488-17-5
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >95.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
3-Methylcatechol is a building block in the chemical synthesis produced by Pseudomonas putida MC2[1].
[1]. L E HÜsken, et al. Integrated bioproduction and extraction of 3-methylcatechol. J Biotechnol. 2001 Jun 1;88(1):11-9.
| Cas No. | 488-17-5 | SDF | |
| 别名 | 3-甲基邻苯二酚 | ||
| Canonical SMILES | OC1=CC=CC(C)=C1O | ||
| 分子式 | C7H8O2 | 分子量 | 124.14 |
| 溶解度 | 储存条件 | 4°C, stored under nitrogen | |
| 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 | 8.0554 mL | 40.2771 mL | 80.5542 mL |
| 5 mM | 1.6111 mL | 8.0554 mL | 16.1108 mL |
| 10 mM | 0.8055 mL | 4.0277 mL | 8.0554 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。
A Bph-Like Nitroarene Dioxygenase Catalyzes the Conversion of 3-Nitrotoluene to 3-Methylcatechol by Rhodococcus sp. Strain ZWL3NT
Appl Environ Microbiol 2020 Feb 3;86(4):e02517-19.PMID:31811044DOI:10.1128/AEM.02517-19.
All nitroarene dioxygenases reported so far originated from Nag-like naphthalene dioxygenase of Gram-negative strains, belonging to group III of aromatic ring-hydroxylating oxygenases (RHOs). Gram-positive Rhodococcus sp. strain ZWL3NT utilizes 3-nitrotoluene (3NT) as the sole source of carbon, nitrogen, and energy for growth. It was also reported that 3NT degradation was constitutive and the intermediate was 3-Methylcatechol. In this study, a gene cluster (bndA1A2A3A4) encoding a multicomponent dioxygenase, belonging to group IV of RHOs, was identified. Recombinant Rhodococcus imtechensis RKJ300 carrying bndA1A2A3A4 exhibited 3NT dioxygenase activity, converting 3NT into 3-Methylcatechol exclusively, with nitrite release. The identity of the product 3-Methylcatechol was confirmed using liquid chromatography-mass spectrometry. A time course of biotransformation showed that the 3NT consumption was almost equal to the 3-Methylcatechol accumulation, indicating a stoichiometry conversion of 3NT to 3-Methylcatechol. Unlike reported Nag-like dioxygenases transforming 3NT into 4-methylcatechol or both 4-methylcatechol and 3-Methylcatechol, this Bph-like dioxygenase (dioxygenases homologous to the biphenyl dioxygenase from Rhodococcus sp. strain RHA1) converts 3NT to 3-Methylcatechol without forming 4-methylcatechol. Furthermore, whole-cell biotransformation of strain RKJ300 with bndA1A2A3A4 and strain ZWL3NT exhibited the extended and same substrate specificity against a number of nitrobenzene or substituted nitrobenzenes, suggesting that BndA1A2A3A4 is likely the native form of 3NT dioxygenase in strain ZWL3NT.IMPORTANCE Nitroarenes are synthetic molecules widely used in the chemical industry. Microbial degradation of nitroarenes has attracted extensive attention, not only because this class of xenobiotic compounds is recalcitrant in the environment but also because the microbiologists working in this field are curious about the evolutionary origin and process of the nitroarene dioxygenases catalyzing the initial reaction in the catabolism. In contrast to previously reported nitroarene dioxygenases from Gram-negative strains, which originated from a Nag-like naphthalene dioxygenase, the 3-nitrotoluene (3NT) dioxygenase in this study is from a Gram-positive strain and is an example of a Bph-like nitroarene dioxygenase. The preference of hydroxylation of this enzyme at the 2,3 positions of the benzene ring to produce 3-Methylcatechol exclusively from 3NT is also a unique property among the studied nitroarene dioxygenases. These findings will enrich our understanding of the diversity and origin of nitroarene dioxygenase in microorganisms.
A process optimization for bio-catalytic production of substituted catechols (3-nitrocatechol and 3-Methylcatechol
BMC Biotechnol 2010 Jun 30;10:49.PMID:20587073DOI:10.1186/1472-6750-10-49.
Background: Substituted catechols are important precursors for large-scale synthesis of pharmaceuticals and other industrial products. Most of the reported chemical synthesis methods are expensive and insufficient at industrial level. However, biological processes for production of substituted catechols could be highly selective and suitable for industrial purposes. Results: We have optimized a process for bio-catalytic production of 3-substituted catechols viz. 3-nitrocatechol (3-NC) and 3-Methylcatechol (3-MC) at pilot scale. Amongst the screened strains, two strains viz. Pseudomonas putida strain (F1) and recombinant Escherichia coli expression clone (pDTG602) harboring first two genes of toluene degradation pathway were found to accumulate 3-NC and 3-MC respectively. Various parameters such as amount of nutrients, pH, temperature, substrate concentration, aeration, inoculums size, culture volume, toxicity of substrate and product, down stream extraction, single step and two-step biotransformation were optimized at laboratory scale to obtain high yields of 3-substituted catechols. Subsequently, pilot scale studies were performed in 2.5 liter bioreactor. The rate of product accumulation at pilot scale significantly increased up to approximately 90-95% with time and high yields of 3-NC (10 mM) and 3-MC (12 mM) were obtained. Conclusion: The biocatalytic production of 3-substituted catechols viz. 3-NC and 3-MC depend on some crucial parameters to obtain maximum yields of the product at pilot scale. The process optimized for production of 3-substituted catechols by using the organisms P. putida (F1) and recombinant E. coli expression clone (pDTG602) may be useful for industrial application.
Enhanced 3-Methylcatechol production by Pseudomonas putida TODE1 in a two-phase biotransformation system
J Gen Appl Microbiol 2014;60(5):183-90.PMID:25420423DOI:10.2323/jgam.60.183.
In this study, genetically engineered Pseudomonas putida TODE1 served as a biocatalyst for the bioproduction of valuable 3-Methylcatechol (3MC) from toluene in an aqueous-organic two-phase system. The two-phase system was used as an approach to increase the biocatalyst efficiency. Among the organic solvent tested, n-decanol offered several benefits including having the highest partitioning of 3MC, with a high 3MC yield and low cell toxicity. The effect of media supplementation with carbon/energy sources (glucose, glycerol, acetate and succinate), divalent metal cations (Mg(2+), Ca(2+), Mn(2+) and Fe(2+)), and short-chain alcohols (ethanol, n-propanol and n-butanol) as a cofactor regeneration system on the toluene dioxygenase (TDO) activity, cell viability, and overall 3MC yield were evaluated. Along with the two-step cell preparation protocol, supplementation of the medium with 4 mM glycerol as a carbon/energy source, and 0.4 mM Fe(2+) as a cofactor for TDO significantly enhanced the 3MC production level. When in combination with the use of n-decanol and n-butanol as the organic phase, a maximum overall 3MC concentration of 31.8 mM (166 mM in the organic phase) was obtained in a small-scale production, while it was at 160.5 mM (333.2 mM in the organic phase) in a 2-L scale. To our knowledge, this is the highest 3MC yield obtained from a TDO-based system so far.
High-rate 3-Methylcatechol production in Pseudomonas putida strains by means of a novel expression system
Appl Microbiol Biotechnol 2001 May;55(5):571-7.PMID:11414323DOI:10.1007/s002530000566.
The bioconversion of toluene into 3-Methylcatechol was studied as a model system for the production of valuable 3-substituted catechols in general. For this purpose, an improved microbial system for the production of 3-Methylcatechol was obtained. Pseudomonas putida strains containing the todC1C2BAD genes involved in the conversion of toluene into 3-Methylcatechol were used as hosts for introducing extra copies of these genes by means of a novel integrative expression system. A construct was made containing an expression cassette with the todC1C2BAD genes cloned under the control of the inducible regulatory control region for naphthalene and phenanthrene degradation, nagR. Introducing this construct into wild-type P. putida F1, which degrades toluene via 3-Methylcatechol, or into mutant P. putida F107, which accumulates 3-Methylcatechol, yielded biocatalysts carrying multiple copies of the expression cassette. As a result, up to 14 mM (1.74 g l(-1)) of 3-Methylcatechol was accumulated and the specific production rate reached a level of 105 micromol min(-1) g(-1) cell dry weight, which is four times higher than other catechol production systems. It was shown that these properties were kept stable in the biocatalysts without the need for antibiotics in the production process. This is an important step for obtaining designer biocatalysts.
Integrated bioproduction and extraction of 3-Methylcatechol
J Biotechnol 2001 Jun 1;88(1):11-9.PMID:11377761DOI:10.1016/s0168-1656(01)00252-8.
Pseudomonas putida MC2 is a solvent-tolerant strain that accumulates 3-Methylcatechol. In aqueous media, 10 mM of 3-Methylcatechol was produced and production was limited by 3-Methylcatechol toxicity to the biocatalyst. Production levels increased by introduction of a second, organic phase that provides the substrate toluene and extracts the product from the culture medium. Octanol was shown to be an appropriate second phase with respect to tolerance of the strain for this solvent and with respect to partitioning of both substrate and product. Per unit of overall reactor volume (octanol and water), best results were obtained with 50% (v/v) of octanol: an overall 3-Methylcatechol concentration of 25 mM was reached with 96% of the product present in the octanol phase. These product concentrations are much higher than in aqueous media without organic solvent, indicating that biocatalysis in an organic/aqueous two-phase system is an improved set-up for high production levels of 3-Methylcatechol.