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Home> Encyclopedia >Pharmaceutical Intermediates>Pharmaceutical>Organic Intermediate
1-Tetralone structure
1-Tetralone structure

1-Tetralone

Iupac Name:3,4-dihydro-2H-naphthalen-1-one
CAS No.: 529-34-0
Molecular Weight:146.1858
Modify Date.: 2022-11-10 14:52
Introduction: It is mainly used in the manufacture of menadol by dehydrogenation; the intermediate used in the pharmaceutical industry for the synthesis of 18-methyl norethisterone (contraceptive) and rodenticide, and also an important intermediate for the synthesis of benazepril.?In addition, it can also be used as a softener for solvents and plastics, and its chloride has an insecticidal effect. View more+
1. Names and Identifiers
1.1 Name
1-Tetralone
1.2 Synonyms

1(2H)-Naphthalenone, 3,4-dihydro- 1,2,3,4-Tetrahydro-1-naphthalenone 1,2,3,4-Tetrahydro-1-oxonaphthalene 1,2,3,4-Tetrahydronaphthalen-1-one 1-Oxo-1,2,3,4-tetrahydronaphthalene 1-Oxotetralin 1-Tetralone 3,4-Dihydro-1(2H)-naphthalenone 3,4-Dihydro-2H-naphthalen-1-one 3,4-Dihydronaphthalen-1(2H)-one 3,4-Dihydronaphthalen-1-one a-Tetralone Benzocyclohexan-1-one NSC 5171 α-Tetralone

1.3 CAS No.
529-34-0
1.4 CID
10724
1.5 EINECS(EC#)
208-460-6
1.6 Molecular Formula
C10H10O (isomer)
1.7 Inchi
InChI=1S/C10H10O/c11-10-7-3-5-8-4-1-2-6-9(8)10/h1-2,4,6H,3,5,7H2
1.8 InChkey
XHLHPRDBBAGVEG-UHFFFAOYSA-N
1.9 Canonical Smiles
C1CC2=CC=CC=C2C(=O)C1
1.10 Isomers Smiles
C1CC2=CC=CC=C2C(=O)C1
2. Properties
2.1 Density
1.096
2.1 Melting point
5-6℃
2.1 Boiling point
127℃ (13 mmHg)
2.1 Refractive index
1.5675-1.5695
2.1 Flash Point
130℃
2.1 Precise Quality
146.07300
2.1 PSA
17.07000
2.1 logP
2.20560
2.1 Appearance
clear to yellow liquid
2.2 Storage
Ambient temperatures.
2.3 Chemical Properties
Clear amber to brown oily liquid
2.4 Color/Form
brown
2.5 Water Solubility
insoluble
2.6 Spectral Properties
INDEX OF REFRACTION: 1.5672 @ 20 DEG C/D; MAX ABSORPTION (HEXANE): 247.5 NM (LOG E= 4.06); 290 NM (LOG E= 3.28)
IR: 7359 (Coblentz Society Spectral Collection)
UV: 8-10 (Documentation of Molecular Spectroscopy Collection)
NMR: 9722 (Sadtler Research Laboratories Spectral Collection)
MASS: 823 (Atlas of Mass Spectral Data, John Wiley & Sons, New York)
MASS: 420 (National Bureau of Standards EPA-NIH Mass Spectra Data Base, NSRDS-NBS-63)
2.7 Stability
Stable under normal temperatures and pressures.
2.8 StorageTemp
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
3. Use and Manufacturing
3.1 Usage

Solvent and intermediate.

4. Safety and Handling
4.1 Hazard Codes
Xn
4.1 Risk Statements
R20/22
4.1 Safety Statements
S23
4.1 Packing Group
I; II; III
4.1 RIDADR
200kgs
4.1 WGK Germany
3
4.1 RTECS
QK4375000
4.1 Report

The 1-Tetralone, with its CAS registry number 529-34-0, has the IUPAC name of 3,4-dihydro-2H-naphthalen-1-one. For being a kind of clear amber to brown oily liquid with no odour, it is easily soluble in water and ethanol while insoluble in chloroform.?And its?product categories?are including?pharmaceutical intermediates.

The characteristics of this chemical are as below: (1)ACD/LogP: 2.61; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.61; (4)ACD/LogD (pH 7.4): 2.61; (5)ACD/BCF (pH 5.5): 56.95; (6)ACD/BCF (pH 7.4): 56.95; (7)ACD/KOC (pH 5.5): 628.32; (8)ACD/KOC (pH 7.4): 628.32; (9)#H bond acceptors: 1; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 17.07; (13)Index of Refraction: 1.563; (14)Molar Refractivity: 43.16 cm3; (15)Molar Volume: 132.7 cm3; (16)Polarizability: 17.11×10-24 cm3; (17)Surface Tension: 41.8 dyne/cm; (18)Density: 1.101 g/cm3; (19)Flash Point: 104.6 °C; (20)Enthalpy of Vaporization: 49.33 kJ/mol; (21)Boiling Point: 255.8 °C at 760 mmHg; (22)Vapour Pressure: 0.016 mmHg at 25°C; (23)Exact Mass: 146.073165; (24)MonoIsotopic Mass: 146.073165; (25)Topological Polar Surface Area: 17.1; (26)Heavy Atom Count: 11; (27)Complexity: 162.

Production method of this chemical: 1,2,3,4-tetrahydro-naphthalene could react to produce 1-Tetralone. This reaction could?happen in the presence of?the?reagent of N-hydroxyphthalimide and the solvent of pyridine in the condition of?anodic oxidation.?

Use of this chemical: 1-Tetralone could react with indole-2,3-dione to produce 5,6-dihydro-benz[c]acridine-7-carboxylic acid. This reaction could happen in the presence of the reagent of aqueous-alcoholic alkali.

As to its usage, it is widely applied in many ways. It could be used as the intermediate of pharmaceutics, such as being the intermediate of prophylactic 18-methylnorethindrone and also the Benayzepril; It could also be used as the solvent and plastic softener; Beside, it could be used as the intermediate in rodenticide.

When you are dealing with this chemical, you should be cautious. For being a kind of harmful chemical which may cause damage to health, it is dangerous to our body if by inhalation, in contact with skin and if swallowed. Therefore, you should wear suitable protective clothing and then avoid contacting with skin and eyes. Besides, do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer).?

Additionally, you could obtain the molecular structure by converting the following datas:
(1)Canonical SMILES: C1CC2=CC=CC=C2C(=O)C1
(2)InChI: InChI=1S/C10H10O/c11-10-7-3-5-8-4-1-2-6-9(8)10/h1-2,4,6H,3,5,7H2
(3)InChIKey: XHLHPRDBBAGVEG-UHFFFAOYSA-N?

Below are the toxicity information of this chemical:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rabbit LD50 skin > 2mL/kg (2mL/kg) ? Toxicology and Applied Pharmacology. Vol. 28, Pg. 313, 1974.
?
rat LD50 oral 810uL/kg (0.81mL/kg) ? American Industrial Hygiene Association Journal. Vol. 30, Pg. 470, 1969.
?

4.2 Specification

The 1-Tetralone, with its CAS registry number 529-34-0, has the IUPAC name of 3,4-dihydro-2H-naphthalen-1-one. For being a kind of clear amber to brown oily liquid with no odour, it is easily soluble in water and ethanol while insoluble in chloroform.?And its?product categories?are including?pharmaceutical intermediates.

The characteristics of this chemical are as below: (1)ACD/LogP: 2.61; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.61; (4)ACD/LogD (pH 7.4): 2.61; (5)ACD/BCF (pH 5.5): 56.95; (6)ACD/BCF (pH 7.4): 56.95; (7)ACD/KOC (pH 5.5): 628.32; (8)ACD/KOC (pH 7.4): 628.32; (9)#H bond acceptors: 1; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 17.07; (13)Index of Refraction: 1.563; (14)Molar Refractivity: 43.16 cm3; (15)Molar Volume: 132.7 cm3; (16)Polarizability: 17.11×10-24 cm3; (17)Surface Tension: 41.8 dyne/cm; (18)Density: 1.101 g/cm3; (19)Flash Point: 104.6 °C; (20)Enthalpy of Vaporization: 49.33 kJ/mol; (21)Boiling Point: 255.8 °C at 760 mmHg; (22)Vapour Pressure: 0.016 mmHg at 25°C; (23)Exact Mass: 146.073165; (24)MonoIsotopic Mass: 146.073165; (25)Topological Polar Surface Area: 17.1; (26)Heavy Atom Count: 11; (27)Complexity: 162.

Production method of this chemical: 1,2,3,4-tetrahydro-naphthalene could react to produce 1-Tetralone. This reaction could?happen in the presence of?the?reagent of N-hydroxyphthalimide and the solvent of pyridine in the condition of?anodic oxidation.?

Use of this chemical: 1-Tetralone could react with indole-2,3-dione to produce 5,6-dihydro-benz[c]acridine-7-carboxylic acid. This reaction could happen in the presence of the reagent of aqueous-alcoholic alkali.

As to its usage, it is widely applied in many ways. It could be used as the intermediate of pharmaceutics, such as being the intermediate of prophylactic 18-methylnorethindrone and also the Benayzepril; It could also be used as the solvent and plastic softener; Beside, it could be used as the intermediate in rodenticide.

When you are dealing with this chemical, you should be cautious. For being a kind of harmful chemical which may cause damage to health, it is dangerous to our body if by inhalation, in contact with skin and if swallowed. Therefore, you should wear suitable protective clothing and then avoid contacting with skin and eyes. Besides, do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer).?

Additionally, you could obtain the molecular structure by converting the following datas:
(1)Canonical SMILES: C1CC2=CC=CC=C2C(=O)C1
(2)InChI: InChI=1S/C10H10O/c11-10-7-3-5-8-4-1-2-6-9(8)10/h1-2,4,6H,3,5,7H2
(3)InChIKey: XHLHPRDBBAGVEG-UHFFFAOYSA-N?

Below are the toxicity information of this chemical:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rabbit LD50 skin > 2mL/kg (2mL/kg) ? Toxicology and Applied Pharmacology. Vol. 28, Pg. 313, 1974.
?
rat LD50 oral 810uL/kg (0.81mL/kg) ? American Industrial Hygiene Association Journal. Vol. 30, Pg. 470, 1969.
?

4.3 Toxicity
LD50 orally in Rabbit: 810 mg/kg LD50 dermal Rabbit > 2200 mg/kg
5. MSDS

2.Hazard identification

2.1 Classification of the substance or mixture

Acute toxicity - Oral, Category 4

2.2 GHS label elements, including precautionary statements

Pictogram(s)
Signal word

Warning

Hazard statement(s)

H302 Harmful if swallowed

Precautionary statement(s)
Prevention

P264 Wash ... thoroughly after handling.

P270 Do not eat, drink or smoke when using this product.

Response

P301+P312 IF SWALLOWED: Call a POISON CENTER/doctor/\u2026if you feel unwell.

P330 Rinse mouth.

Storage

none

Disposal

P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification

none

9. Computational chemical data
  • Molecular Weight: 146.1858g/mol
  • Molecular Formula: C10H10O
  • Compound Is Canonicalized: True
  • XLogP3-AA: 2
  • Exact Mass: 146.073164938
  • Monoisotopic Mass: 146.073164938
  • Complexity: 162
  • Rotatable Bond Count: 0
  • Hydrogen Bond Donor Count: 0
  • Hydrogen Bond Acceptor Count: 1
  • Topological Polar Surface Area: 17.1
  • Heavy Atom Count: 11
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count: 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Isotope Atom Count: 0
  • Covalently-Bonded Unit Count: 1
  • CACTVS Substructure Key Fingerprint: AAADccBwIAAAAAAAAAAAAAAAAAAAAAAAAAAwYAAAAAAAAADBAAAAGgAAAAAADASAmAAwAIAAAACIAqBSAAACAAAkAAAIiAEAAMgIIDKAFRCAIQAggAAIiYcIiICOgAAAAAAQAAAAAAAAACAAAAAAAAAAAA==
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