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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 widely found in nature, particularly in plants, and are known for their diverse biological activities, including roles in plant defense and as precursors to essential oils. The specific compound C21H28O3 could be a derivative or a specific type of terpene, but without additional context or a more precise name, it's challenging to provide a detailed summary. Terpenes are known for their complex structures and can vary widely in their properties and functions.

1238-31-9

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1238-31-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1238-31-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,2,3 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1238-31:
(6*1)+(5*2)+(4*3)+(3*8)+(2*3)+(1*1)=59
59 % 10 = 9
So 1238-31-9 is a valid CAS Registry Number.

1238-31-9Downstream Products

1238-31-9Relevant academic research and scientific papers

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.

Dimethylcarbonat als Methylierungsmittel unter phasen-transfer-katalytischen Bedingungen

Lissel, Manfred,Schmidt, Stefan,Neumann, Beate

, p. 382 - 383 (2007/10/02)

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.

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