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The preferred IUPAC name for Prenol is 3,3-Dimethylallyl alcohol.
Answer: False
The preferred IUPAC name for Prenol is 3-Methylbut-2-en-1-ol. While 3,3-Dimethylallyl alcohol is a common name, it is not the systematic IUPAC designation.
The CAS Registry Number assigned to Prenol is 10700.
Answer: False
The correct CAS Registry Number for Prenol is 556-82-1. The number 10700 is its identifier on the ChemSpider database.
Prenol has a molar mass of approximately 50 g/mol.
Answer: False
The molar mass of Prenol is approximately 86.132 g/mol. A value of 50 g/mol is significantly inaccurate.
Oxidation of Prenol yields the ketone known as prenone.
Answer: False
Oxidation of Prenol yields the aldehyde known as prenal, not the ketone prenone. Prenal is an intermediate in the synthesis pathway towards citral.
Prenol has a unique identifier assigned by the European Chemicals Agency (ECHA) called an EC Number.
Answer: True
Prenol is assigned an EC Number (European Community number) of 209-141-4 by the European Chemicals Agency (ECHA), serving as a regulatory identifier within the EU.
The SMILES string for Prenol is OC\C=C(/C)C.
Answer: True
The Simplified Molecular Input Line Entry System (SMILES) string OC\C=C(/C)C accurately represents the chemical structure of Prenol.
The PubChem Compound ID (CID) for Prenol is CHEBI:16019.
Answer: False
The PubChem Compound ID (CID) for Prenol is 11173. CHEBI:16019 is its identifier in the ChEBI database.
The InChI key for Prenol is ASUAYTHWZCLXAN-UHFFFAOYSA-N.
Answer: True
The standard InChI key associated with Prenol is indeed ASUAYTHWZCLXAN-UHFFFAOYSA-N, providing a unique textual identifier for its structure.
Prenol contains 5 carbon atoms, 10 hydrogen atoms, and 1 oxygen atom per molecule.
Answer: True
The chemical formula for Prenol is C5H10O, confirming the presence of 5 carbon atoms, 10 hydrogen atoms, and 1 oxygen atom per molecule.
Prenol can be visualized using an interactive 3D model accessible via JSmol.
Answer: True
The source material indicates that an interactive 3D model of Prenol is available for visualization through the JSmol platform.
What is the preferred IUPAC name for Prenol?
Answer: 3-Methylbut-2-en-1-ol
The preferred IUPAC name for Prenol, established by systematic nomenclature, is 3-Methylbut-2-en-1-ol. This designation ensures clarity and consistency in chemical identification.
Which of the following is NOT a common name or identifier for Prenol listed in the source?
Answer: Prenal
Prenal is an aldehyde derived from Prenol via oxidation. It is not a common name or identifier for Prenol itself. The other options are valid identifiers or common names for Prenol.
What is the chemical formula for Prenol?
Answer: C5H10O
The chemical formula for Prenol is C5H10O, indicating a molecular structure composed of five carbon atoms, ten hydrogen atoms, and one oxygen atom.
Prenol has a molar mass of approximately:
Answer: 86.132 g/mol
The precise molar mass of Prenol is calculated to be 86.132 g/mol, a fundamental property used in stoichiometric calculations.
Which identifier is assigned to Prenol by the PubChem database?
Answer: 11173
The PubChem database assigns the Compound ID (CID) 11173 to Prenol, facilitating its retrieval and study within that comprehensive chemical information resource.
The source mentions an interactive 3D model of Prenol is available via which platform?
Answer: JSmol
An interactive 3D model for visualizing Prenol's molecular structure is accessible through the JSmol platform, as indicated in the provided information.
The ECHA InfoCard number for Prenol is:
Answer: 100.008.312
The ECHA InfoCard number assigned to Prenol is 100.008.312, providing regulatory information within the European Chemicals Agency framework.
The standard InChI representation for Prenol includes a specific key. What is this key?
Answer: ASUAYTHWZCLXAN-UHFFFAOYSA-N
The standard InChI key for Prenol is ASUAYTHWZCLXAN-UHFFFAOYSA-N, which serves as a unique, canonical textual identifier for its chemical structure.
Prenol is a solid at room temperature, with a melting point above 0°C.
Answer: False
Prenol is a clear, colorless oil at room temperature, not a solid. Its melting point is approximately -59°C, well below 0°C.
Prenol is highly soluble in water, dissolving completely at 20°C.
Answer: False
Prenol exhibits moderate solubility in water, with a value of 17 grams per 100 milliliters at 20°C. It does not dissolve completely.
Prenol's flash point is above the boiling point of water.
Answer: False
Prenol's flash point is approximately 43.3°C, whereas the boiling point of water is 100°C. Therefore, Prenol's flash point is below the boiling point of water.
Prenol's density is less than that of water.
Answer: True
Prenol has a density of approximately 0.848 g/cm³, which is less than the density of water (approximately 1 g/cm³).
Prenol is described as having a pungent, chemical odor.
Answer: False
Prenol is described as having a fruity odor, which makes it suitable for use in perfumery. A pungent, chemical odor is not its characteristic scent.
The vapor pressure of Prenol at 25°C is significantly higher than 100 hPa.
Answer: False
The vapor pressure of Prenol at 25°C is approximately 3.17 hPa, which is substantially lower than 100 hPa.
Prenol's log P value of 0.91 suggests it is highly lipophilic.
Answer: False
A log P value of 0.91 indicates moderate solubility in both aqueous and lipid-like environments, rather than high lipophilicity. Highly lipophilic compounds typically have much higher log P values.
What is the approximate boiling point of Prenol?
Answer: 142 °C
Prenol exhibits a boiling point of approximately 142°C at standard atmospheric pressure, indicating its volatility characteristics.
Prenol is described as having which physical characteristics?
Answer: A clear, colorless oil with a fruity odor
Prenol is characterized as a clear, colorless oil possessing a distinct fruity odor, which contributes to its use in perfumery.
What does the partition coefficient (log P) of 0.91 for Prenol indicate?
Answer: Prenol has moderate solubility in both water and lipid-like environments.
A log P value of 0.91 suggests that Prenol exhibits balanced solubility, indicating it partitions moderately between aqueous and lipid phases. This is neither extremely high nor low lipophilicity.
What is the density of Prenol?
Answer: 0.848 g/cm³
The density of Prenol is reported as 0.848 g/cm³, a value crucial for various physical and chemical calculations.
What is the flash point of Prenol?
Answer: 43.3 °C
The flash point of Prenol is approximately 43.3°C (109.9°F). This value is critical for assessing its flammability hazards.
The GHS pictograms for Prenol indicate it is non-flammable and non-toxic.
Answer: False
GHS pictograms for Prenol include a flame (indicating flammability) and an exclamation mark (indicating it is harmful if swallowed). It is not classified as non-flammable or non-toxic.
The GHS signal word for Prenol is 'Danger'.
Answer: False
The Globally Harmonized System (GHS) signal word assigned to Prenol is 'Warning', indicating a lower severity of hazard compared to 'Danger'.
Prenol is classified under GHS hazard statement H315, meaning 'Causes skin irritation'.
Answer: False
The primary GHS hazard statements for Prenol are H226 ('Flammable liquid and vapor') and H302 ('Harmful if swallowed'). H315 ('Causes skin irritation') is not listed as a primary hazard.
According to the GHS classification, Prenol is considered:
Answer: A flammable liquid and harmful if swallowed
The GHS classification for Prenol includes hazard statements indicating it is a flammable liquid (H226) and harmful if swallowed (H302).
Which GHS pictogram is associated with Prenol due to its flammability?
Answer: Flame
The GHS pictogram depicting a flame is associated with Prenol, signifying its classification as a flammable liquid and vapor.
What hazard is indicated by the GHS hazard statement H302 for Prenol?
Answer: Harmful if swallowed
The GHS hazard statement H302 specifically denotes that the substance is 'Harmful if swallowed', representing an acute toxicity risk.
Which of the following is a key precautionary statement for handling Prenol?
Answer: Keep away from heat, sparks, and open flames.
Given Prenol's classification as a flammable liquid (H226), a critical precautionary statement (P210) is to keep it away from heat, sparks, and open flames to prevent ignition.
What is the GHS signal word assigned to Prenol?
Answer: Warning
The Globally Harmonized System (GHS) assigns the signal word 'Warning' to Prenol, indicating a moderate level of hazard.
Prenol is primarily used as a solvent in industrial cleaning applications.
Answer: False
The primary industrial application of Prenol is as a precursor for the synthesis of citral, which is subsequently used in the production of vitamins A, E, and K. It is not primarily used as a solvent for cleaning.
The industrial production of Prenol involves the isomerization of isoprenol.
Answer: True
Industrial synthesis of Prenol typically involves the initial formation of isoprenol (3-methyl-3-buten-1-ol) from isobutene and formaldehyde, followed by the isomerization of isoprenol to yield Prenol (3-methyl-2-buten-1-ol).
Prenol is manufactured industrially by companies located exclusively in Germany.
Answer: False
Industrial production of Prenol occurs in multiple regions, including Germany (e.g., by BASF) and Asia (e.g., by Kuraray), not exclusively in Germany.
Prenol is used as an intermediate in the synthesis of Vitamin C.
Answer: False
Prenol serves as an intermediate in the synthesis of citral, which is then used for producing vitamins A, E, and K. It is not directly involved in Vitamin C synthesis.
Isoprenol is the final product in the industrial synthesis of Prenol.
Answer: False
Isoprenol (3-methyl-3-buten-1-ol) is an intermediate compound in the industrial production of Prenol (3-methyl-2-buten-1-ol). Prenol is the final product of this specific synthetic step.
What is the primary industrial application of Prenol mentioned in the source?
Answer: Precursor for citral synthesis (leading to vitamins A, E, K)
Prenol serves as a crucial intermediate in the industrial synthesis of citral, which is subsequently utilized in the production of essential vitamins such as A, E, and K.
Which of the following is an isomer of Prenol involved in its industrial production?
Answer: Isoprenol (3-methyl-3-buten-1-ol)
Isoprenol, specifically 3-methyl-3-buten-1-ol, is an isomer of Prenol and serves as a key intermediate in its industrial synthesis pathway.
What was the estimated global production volume of Prenol in 2001?
Answer: 6,000-13,000 tons
In the year 2001, the estimated global production volume for Prenol ranged between 6,000 and 13,000 tons, indicating a substantial industrial output.
Which company manufactures Prenol in Asia, according to the provided text?
Answer: Kuraray
The text specifies that Kuraray is one of the companies known for the industrial manufacture of Prenol, with operations located in Asia.
Prenol is exclusively found in synthetic chemical processes and does not occur naturally.
Answer: False
Prenol occurs naturally in various fruits and plants, such as citrus fruits, berries, tomato, and coffee, in addition to being produced synthetically.
Prenol is classified as a terpenoid, specifically one of the simplest examples.
Answer: True
Prenol is indeed classified as a terpenoid, representing one of the most fundamental structures within this class of organic compounds derived from isoprene units.
Dolichols are unsaturated isoprenoid alcohols similar in structure to Prenol.
Answer: False
Dolichols are isoprenoid alcohols, but they are characterized by a saturated isoprene unit attached to the alcohol group, distinguishing them from unsaturated compounds like Prenol.
Polyprenols are short-chain alcohols containing only 2 or 3 isoprene units.
Answer: False
Polyprenols are defined as long-chain isoprenoid alcohols containing a minimum of five isoprene units (n ≥ 5), and can extend up to 100 units. Short-chain variants are typically referred to by other names.
Live conifer needles are a poor source for extracting polyprenols.
Answer: False
Live conifer needles are identified as one of the richest and most widely available natural sources for the extraction of polyprenols.
What is the significance of dolichols, which are related to Prenol?
Answer: They act as glycosyl carriers in polysaccharide synthesis and protect cell membranes.
Dolichols play vital biological roles, including functioning as glycosyl carriers essential for polysaccharide synthesis and contributing to the protection and stabilization of cellular membranes.
Prenol is structurally related to which class of compounds, often built from repeating isoprene units?
Answer: Isoprenoid alcohols
Prenol is classified as an isoprenoid alcohol, a class of organic compounds characterized by structures derived from repeating isoprene units.
What is the primary role of polyprenols in biological systems, according to the source?
Answer: Protein acylation and synthesis of fat-soluble vitamins
Polyprenols and related long-chain isoprenoid alcohols are significant in biological systems for their roles in protein acylation and the synthesis of fat-soluble vitamins, including A, E, and K.
Prenol is found naturally in which of the following?
Answer: Various fruits like citrus and berries, and plants like tomato and coffee
Prenol occurs naturally in a variety of plant sources, including citrus fruits, berries, tomato, and coffee plants, demonstrating its presence in diverse ecosystems.