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Neoisomenthol

CAS# 20752-34-5

Neoisomenthol

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Chemical structure

Neoisomenthol

3D structure

Chemical Properties of Neoisomenthol

Cas No. 20752-34-5 SDF Download SDF
PubChem ID 19244 Appearance Powder
Formula C10H20O M.Wt 156.27
Type of Compound N/A Storage Desiccate at -20°C
Synonyms (+)-neoisomenthol;(+-)-Isomenthol
Solubility Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.
Chemical Name (1R,2R,5R)-5-methyl-2-propan-2-ylcyclohexan-1-ol
SMILES CC1CCC(C(C1)O)C(C)C
Standard InChIKey NOOLISFMXDJSKH-OPRDCNLKSA-N
Standard InChI InChI=1S/C10H20O/c1-7(2)9-5-4-8(3)6-10(9)11/h7-11H,4-6H2,1-3H3/t8-,9-,10-/m1/s1
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Neoisomenthol Dilution Calculator

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Neoisomenthol Molarity Calculator

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Preparing Stock Solutions of Neoisomenthol

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 6.3992 mL 31.9959 mL 63.9918 mL 127.9836 mL 159.9795 mL
5 mM 1.2798 mL 6.3992 mL 12.7984 mL 25.5967 mL 31.9959 mL
10 mM 0.6399 mL 3.1996 mL 6.3992 mL 12.7984 mL 15.998 mL
50 mM 0.128 mL 0.6399 mL 1.2798 mL 2.5597 mL 3.1996 mL
100 mM 0.064 mL 0.32 mL 0.6399 mL 1.2798 mL 1.5998 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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References on Neoisomenthol

Monoterpene metabolism. Cloning, expression, and characterization of menthone reductases from peppermint.[Pubmed:15728344]

Plant Physiol. 2005 Mar;137(3):873-81.

(-)-Menthone is the predominant monoterpene produced in the essential oil of maturing peppermint (Mentha x piperita) leaves during the filling of epidermal oil glands. This early biosynthetic process is followed by a second, later oil maturation program (approximately coincident with flower initiation) in which the C3-carbonyl of menthone is reduced to yield (-)-(3R)-menthol and (+)-(3S)-neomenthol by two distinct NADPH-dependent ketoreductases. An activity-based in situ screen, by expression in Escherichia coli of 23 putative redox enzymes from an immature peppermint oil gland expressed sequence tag library, was used to isolate a cDNA encoding the latter menthone:(+)-(3S)-neomenthol reductase. Reverse transcription-PCR amplification and RACE were used to acquire the former menthone:(-)-(3R)-menthol reductase directly from mRNA isolated from the oil gland secretory cells of mature leaves. The deduced amino acid sequences of these two reductases share 73% identity, provide no apparent subcellular targeting information, and predict inclusion in the short-chain dehydrogenase/reductase family of enzymes. The menthone:(+)-(3S)-neomenthol reductase cDNA encodes a 35,722-D protein, and the recombinant enzyme yields 94% (+)-(3S)-neomenthol and 6% (-)-(3R)-menthol from (-)-menthone as substrate, and 86% (+)-(3S)-isomenthol and 14% (+)-(3R)-Neoisomenthol from (+)-isomenthone as substrate, has a pH optimum of 9.3, and K(m) values of 674 mum, > 1 mm, and 10 mum for menthone, isomenthone, and NADPH, respectively, with a k(cat) of 0.06 s(-1). The recombinant menthone:(-)-(3R)-menthol reductase has a deduced size of 34,070 D and converts (-)-menthone to 95% (-)-(3R)-menthol and 5% (+)-(3S)-neomenthol, and (+)-isomenthone to 87% (+)-(3R)-Neoisomenthol and 13% (+)-(3S)-isomenthol, displays optimum activity at neutral pH, and has K(m) values of 3.0 mum, 41 mum, and 0.12 mum for menthone, isomenthone, and NADPH, respectively, with a k(cat) of 0.6 s(-1). The respective activities of these menthone reductases account for all of the menthol isomers found in the essential oil of peppermint. Biotechnological exploitation of these genes could lead to improved production yields of (-)-menthol, the principal and characteristic flavor component of peppermint.

Metabolism of Monoterpenes: Conversion of l-Menthone to l-Menthol and d-Neomenthol by Stereospecific Dehydrogenases from Peppermint (Mentha piperita) Leaves.[Pubmed:16662335]

Plant Physiol. 1982 May;69(5):1013-7.

The monoterpene ketone l-menthone is specifically converted to l-menthol and l-menthyl acetate and to d-neomenthol and d-neomenthyl-beta-d-glucoside in mature peppermint (Mentha piperita L. cv. Black Mitcham) leaves. The selectivity of product formation results from compartmentation of the menthol dehydrogenase with the acetyl transferase and that of the neomenthol dehydrogenase with the glucosyl transferase. Soluble enzyme preparations, but not particulate preparations, from mature peppermint leaves catalyzed the NADPH-dependent reduction of l-menthone to both epimeric alcohols, and the two dehydrogenases responsible for these stereospecific transformations were resolved by affinity chromatography on Matrex Gel Red A. Both enzymes have a molecular weight of approximately 35,000, possess a K(m) for NADPH of about 2 x 10(-5)m, are very sensitive to inhibition by thiol-directed reagents, and are not readily reversible. The menthol dehydrogenase showed a pH optimum at 7.5, exhibited a K(m) for l-menthone of about 2.5 x 10(-4)m, and also reduced d-isomenthone to d-Neoisomenthol. The neomenthol dehydrogenase showed a pH optimum at 7.6, exhibited a K(m) for l-menthone of about 2.2 x 10(-5)m, and also reduced d-isomenthone to d-isomenthol. These stereochemically distinct, but otherwise similar, enzymes are of key importance in determining the metabolic fate of menthone in peppermint, and they are probably typical of the class of dehydrogenases thought to be responsible for the metabolism of monoterpene ketones during plant development.

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