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FEMA 3242, also known as cis-3-Hexen-1-ol, is a natural organic compound characterized by its fresh, leafy green aroma. It is derived from fruits and vegetables and is recognized for its ability to impart a natural and refreshing green note to a variety of products. FEMA 3242 is classified as generally recognized as safe (GRAS) by the Food and Drug Administration (FDA), indicating its non-toxic nature within normal usage concentrations.

20834-59-7

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20834-59-7 Usage

Uses

Used in the Food and Beverage Industry:
FEMA 3242 is used as a flavoring agent to enhance the natural taste of various food and beverage products, providing a refreshing green note that mimics the aroma of fresh fruits and vegetables.
Used in the Fragrance Industry:
FEMA 3242 is utilized as a component in fragrances for its green, grassy scent, contributing to the creation of scents that evoke a sense of nature and freshness.
Used in Cosmetics and Personal Care Products:
FEMA 3242 is incorporated into cosmetics and personal care products to add a pleasant, natural scent, enhancing the sensory experience of these products for consumers.

Check Digit Verification of cas no

The CAS Registry Mumber 20834-59-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,3 and 4 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20834-59:
(7*2)+(6*0)+(5*8)+(4*3)+(3*4)+(2*5)+(1*9)=97
97 % 10 = 7
So 20834-59-7 is a valid CAS Registry Number.

20834-59-7Relevant academic research and scientific papers

Tripeptidic BACE1 inhibitors devised by in-silico conformational structure-based design

Hamada, Yoshio,Tagad, Harichandra D.,Nishimura, Yoshinori,Ishiura, Shoichi,Kiso, Yoshiaki

scheme or table, p. 1130 - 1135 (2012/03/26)

Previously reported pentapeptidic BACE1 inhibitors, designed using a substrate-based approach, were used as lead compounds for the further design of non-peptidic BACE1 inhibitors. Although these peptidic and non-peptidic inhibitors, with a hydroxymethylcarbonyl isostere as a substrate transition-state mimic, exhibited potent BACE1 inhibitory activities, their molecular-sizes appeared a little too big (molecular weight of >600 daltons) for developing practical anti-Alzheimer's disease drugs. To develop lower weight BACE1 inhibitors, a series of tripeptidic BACE1 inhibitors were devised using a design approach based on the conformation of a virtual inhibitor bound to the BACE1 active site, also called 'in-silico conformational structure-based design'. Although these tripeptidic BACE1 inhibitors contained some natural amino acid residues, they are expected to be useful as lead compounds for developing the next generation BACE1 inhibitors, due to their low molecular size and unique structural features compared with previously reported inhibitors.

Pd(II)-catalyzed hydroxyl-directed C-H olefination enabled by monoprotected amino acid ligands

Lu, Yi,Wang, Dong-Hui,Engle, Keary M.,Yu, Jin-Quan

supporting information; experimental part, p. 5916 - 5921 (2010/07/05)

A novel Pd(II)-catalyzed ortho-C-H olefination protocol has been developed using spatially remote, unprotected tertiary, secondary, and primary alcohols as the directing groups. Mono-N-protected amino acid ligands were found to promote the reaction, and an array of olefin coupling partners could be used. When electron-deficient alkenes were used, the resulting olefinated intermediates underwent subsequent Pd(II)-catalyzed oxidative intramolecular cyclization to give the corresponding pyran products, which could be converted into ortho-alkylated alcohols under hydrogenolysis conditions. The mechanistic details of the oxidative cyclization step are discussed and situated in the context of the overall catalytic cycle.

Fragrance compositions containing 2-cyclohexyl-1,1-dimethyl ethanol esters

-

, (2008/06/13)

A fragrance, having a 2-cyclohexyl-1,1-dimethyl ethanol derivative represented by formula (1), wherein R represents a hydrogen atom or an acetyl group, Me represents a methyl group and n represents an integer from 0 to 3, provides a very pleasing scent, has excellent stability in a product, and can be mixed well with other fragrances.

THE EFFECT OF ARYL SUBSTITUENTS ON ARYLCARBENE REACTIVITY

Tomioka, Hideo,Tabayashi, Kazuo,Ozaki, Yasuji,Izawa, Yasuji

, p. 1435 - 1440 (2007/10/02)

Substituted (p-MeO, p-Me, H, p-Cl, p-Br, m-Br, m-MeO, 3,4-Cl2, p-CO2Me, m-CN and p-CN) monophenylcarbenes are generated in a binary mixture of substrates (methanol, cis-4-methyl-2-pentene and cyclohexane) and the relative rate of O - H insertion into methanol to stereospecific cyclopropanation of the olefin to C - H insertion into cyclohexane are calculated from the ratios of products and substrates.It is found (i) that the reactivities of the substrates decrease in the order of methanol, olefin and cyclohexane and (ii) that electron-donating substituents generally lead to reaction with the more reactive substrates while the reaction with the less reactive substrates is favoured in the case of electron-withdrawing substituents.These results are interpreted in terms of the change in the electrophilicity of the singlet arylcarbene by the substituents rather than the change in the singlet-triplet equilibrium.

PHOTOCHEMICAL OXIDATION AND DIMERIZATION OF ALKYLBENZENES. SELECTIVE REACTIONS OF THE ALKYL SIDE GROUPS

Pasternak, Mordechai,Morduchowitz, Abraham

, p. 4275 - 4278 (2007/10/02)

Irradiations of alkylbenzene compounds in an oxygen atmosphere result exclusively in oxidation reactions, while in a less oxidative environment dimerization processes predominate.Under all conditions studied, the reactions took place only at one benzyl position.

Effects of Substituents and Generation Methods on Insertion-Addition Selectivities of ''Arylcarbene'' in Alcohol-Olefin Binary Mixtures. Intervention of Reaction of Diazo Compounds Masquerading as Carbenes

Tomioka, Hideo,Suzuki, Shinji,Izawa, Yasuji

, p. 1047 - 1050 (2007/10/02)

A Hammett study of the insertion-addition selectivity (Ki/ka) and cyclopropanation stereoselectivity (kc/kt) of "arylcarbene" generated either photolytically or thermally in 2-propanol-ethyl vinyl ether binary mixtures showed that ρ values are highly sensitive to the generation method.Thus, plots of ki/ka and kc/kt vs. ? (?+) in the photolytic run gave ρ values of -0.96 (r = -0.96) and -0.15 (r = -0.95), respectively, whereas similar values are +1.4 (r = 0.93) and -1.1 (r = -0.96) in the thermal run.The results along with the effects of precursor, temperature, and sensitizer on the product distributions are interpreted as indicating that, while free carbene is involved in the photolytic run, the ground-state diazo compound is masquerading as carbene in its thermal reaction with the olefin.

Temperature and Substituent Effects on Regioselectivity in the Insertion of Arylcarbene into Alcohols

Tomioka, Hideo,Suzuki, Shinji,Izawa, Yasuji

, p. 3156 - 3162 (2007/10/02)

Photolysis of aryldiazomethanes in methanol, ethanol, and 2-propanol gave OH insertion products along with small amounts of CH insertion products at ambient temperature.However, the CH insertion products increased significantly at the expense of the ether as the temperature was lowered.The attempted sensitized decomposition of the diazomethane did not lead to an increase in the CH insertion products presumably because of a rapid singlet-triplet equilibrium.The key intermediate leading to the CH insertion is suggested to be ground-state triplet arylcarbene, based on the accumulated spectroscopic as well as chemical evidence for the intervention of the triplet arylcarbene in the low-temperature photolysis of aryldiazomethanes.Substituents on the phenyl ring also have an appreciable effect on the insertion selectivity.At room temperature, the OH/CH insertion selectivity increased with the electron-donating ability of the substituents.This is interpreted in terms of the substituent effect on the transition state of OH insertion, where there is a deficiency of electrons at the benzylic carbon atom, rather than on the stability of singlet carbene.At low temperature, both electron-donating and -withdrawing substituents facilitate OH insertion, indicating the change in substituents induces a concomitant change in the insertion mechanism, presumably due to decreasing nucleophilicity of carbene with increasing electron-withdrawing ability as well as decreasing proton-donor activity of alcohol with decreasing temperature.This may also reflect the effect of the substituent on the singlet-triplet energy gap.

Alkylwanderungen bei Sextettumlagerungen

Langhals, Heinz,Range, Guenter,Wistuba, Eckehardt,Ruechardt, Christoph

, p. 3813 - 3830 (2007/10/02)

The migration aptitude of alkyl groups in the Beckmann-, the Criegee-, and the isonitrile-nitrile rearrangements were investigated.The relative rearrangement rates of substituted benzyl groups are an expression of the charge on the migrating carbon at transition state.From the relative rates of migration of exo- and endo-2-norbornyl groups the geometrical changes at the migrating carbon is estimated.Finally, the different influence of α-branching in the migrating group is discussed for these and some other rearrangements.

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