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C21H28O3 is an organic compound with a molecular formula indicating that it contains 21 carbon atoms, 28 hydrogen atoms, and 3 oxygen atoms. C21H28O3 falls under the category of terpenes, which are a large and diverse class of organic compounds derived from isoprene units. Terpenes are known for their wide range of biological functions and are often associated with the fragrances of plants. They are also found in essential oils and are used in various applications, including perfumes, pharmaceuticals, and natural products. The specific compound C21H28O3 could be a derivative or a specific type of terpene, but without additional context or a more precise name, it is difficult to provide a more detailed summary of its properties or uses.

3941-81-9

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3941-81-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3941-81-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,9,4 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 3941-81:
(6*3)+(5*9)+(4*4)+(3*1)+(2*8)+(1*1)=99
99 % 10 = 9
So 3941-81-9 is a valid CAS Registry Number.

3941-81-9Downstream Products

3941-81-9Relevant academic research and scientific papers

Dimethylcarbonat als Methylierungsmittel unter phasen-transfer-katalytischen Bedingungen

Lissel, Manfred,Schmidt, Stefan,Neumann, Beate

, p. 382 - 383 (1986)

Dimethyl carbonate (as well as diethyl, diallyl, dibenzyl carbonate and ethane-1,2-diyl carbonate) in the presence of potassium carbonate and 18-crown-6 (or Aliqual 336) is a versatile, cheap, and safer reagent for the methylation of a variety of organic substrates.

Anionic Fries Rearrangements of Esters of ortho-Iodobenzyl Alcohols: Rapid Routes to Oestrone Methyl Ether and Its 9β Epimer, and Aryl Naphthalide Lignans

Horne, Stephen,Rodrigo, Russell

, p. 164 - 166 (2007/10/02)

A fast, general, low-temperature rearrangement of ortho-iodobenzyl esters, triggered by lithium-iodine exchange, leads to isobenzofurans which are intercepted in situ by inter and intramolecular Diels-Alder (IMDA) reactions to produce a variety of carbocycles including natural lignans and steroids.

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