ChemicalBook >> CAS DataBase List >>BUTOPYRONOXYL

BUTOPYRONOXYL

CAS No.
532-34-3
Chemical Name:
BUTOPYRONOXYL
Synonyms
dihydropyrone;bmoo;ent9;INDALON;INDALONE;INDALONE(R);BUTOPYRONOXYL;DIHYDROPYRONE(R);Butopyronoxyl >BUTYLMESITYL OXIDE
CBNumber:
CB1345940
Molecular Formula:
C12H18O4
Molecular Weight:
226.27
MDL Number:
MFCD00006574
MOL File:
532-34-3.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-07-31 15:25:14

BUTOPYRONOXYL Properties

Melting point 25°C
Boiling point bp760 256-270°
Density 1.054 g/mL at 25 °C(lit.)
refractive index n20/D 1.477(lit.)
Flash point >230 °F
storage temp. 4°C, protect from light
solubility DMSO: 100 mg/mL (441.95 mM)
form clear liquid
color Light orange to Yellow to Green
Henry's Law Constant 2.1×102 mol/(m3Pa) at 25℃, HSDB (2015)
CAS DataBase Reference 532-34-3
FDA UNII 4I5PG5VZ0V
EPA Substance Registry System Butopyronoxyl (532-34-3)

SAFETY

Risk and Safety Statements

Risk Statements  38
Safety Statements  37/39
WGK Germany  3
RTECS  UP7000000
TSCA  TSCA listed
HS Code  29329990
Hazardous Substances Data 532-34-3(Hazardous Substances Data)
Toxicity LD50 in mice, rats (ml/kg): 11.6, 7.4 orally (Draize)
NFPA 704
1
0 0

BUTOPYRONOXYL price More Price(11)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
TCI Chemical D0550 Butopyronoxyl 532-34-3 25G $62 2026-04-30 Buy
TCI Chemical D0550 Butopyronoxyl 532-34-3 500G $534 2026-04-30 Buy
Biosynth AAA53234 Butopyronoxyl 532-34-3 50g $625 2026-06-04 Buy
ChemScene CS-0013468 Butopyronoxyl 95.0% 532-34-3 500mg $54 2026-06-04 Buy
ChemScene CS-0013468 Butopyronoxyl 95.0% 532-34-3 1g $87 2026-06-04 Buy
Product number Packaging Price Buy
D0550 25G $62 Buy
D0550 500G $534 Buy
AAA53234 50g $625 Buy
CS-0013468 500mg $54 Buy
CS-0013468 1g $87 Buy

BUTOPYRONOXYL Chemical Properties, Uses, Production

Synthesis

To a 25-mL flflame-dried flflask under a nitrogen atmosphere were added freshly distilled Rawal’s diene (227 mg, 1 mmol, 1.0 equivalents) and 2 mL of CHCl3. Benzaldehyde (1.5 mmol, 1.5 equivalents) was added dropwise via a gas-tight syringe. The reaction mixture was stirred at room temperature for 2 h and then diluted with 15 mL of CH2Cl2. The yellow solution was cooled to −78 °C and treated with 142 µL acetyl chloride (2 mmol, 2 equivalents). After stirring for about 30 min, saturated Na2CO3 was added. The organic layer was separated and the water phase was diluted with 15 mL of water and extracted twice with CH2Cl2. The combined organic phase was dried with MgSO4, fifiltered, and concentrated to give a yellow oil, which was subjected to flflash chromatography to afford the desired dihydropyrone in 86% overall yield. Reference: Huang, Y.; Rawal, V. H. Org. Lett. 2000, 2, 3321−3322.

Description

Butopyronoxyl is an insect repellent effective against biting insects. Very little data is available regarding its environmental fate, ecotoxicilogy or impacts on human health.

Chemical Properties

Yellow to pale reddish-brown liquid; aromatic odor. Reasonably stable in air. Slowly affected by light. Insoluble in water; miscible with alcohol, chloroform, ether, glacial acetic acid.

Uses

Insect repellents that can be applied directly on the skin.

Uses

Indalon is an insect repellent.

Definition

ChEBI: Butopyronoxyl is a member of pyrans and a carbonyl compound.

Indications

Butopyronoxyl is not water soluble and can be applied to skin and clothing to repel biting stable flies, Lone Star ticks, dog and cat fleas, and chiggers.

Hazard

Toxic by ingestion. May cause liver dam- age.

Mechanism of action

Repellent action disrupting the insects ability to find a host

Safety Profile

Moderately toxic by ingestion. Produces liver necrosis in experimental animals. A rmld skin irritant. See also OXALATES and ESTERS. Combustible when exposed to heat or flame. When heated to decomposition it emits acrid fumes.

Pesticide Type

Insecticide

BUTOPYRONOXYL Preparation Products And Raw materials

Raw materials

Preparation Products

Global Suppliers ( 74)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
3B Pharmachem (Wuhan) International Co.,Ltd. 18930552037 3bsc@sina.com China 15813 69
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Maya High Purity Chemicals +86 (573) 82222445 (0)18006601000 452520369 sales@maya-r.com China 11693 57
TOKYO CHEMICAL INDUSTRY CO., LTD. 03-36680489 Sales-JP@TCIchemicals.com Japan 28364 80
TCI Europe 320-37350700 sales@tcieurope.eu Europe 23654 75
TCI AMERICA 800-4238616 sales@tciamerica.com Americas 23636 75
9ding chemical ( Shanghai) Limited 4009209199 sales@9dingchem.com China 22497 55
BUTYL-3,4-DIHYDRO-2,2-DIMETHYL-4-OXO-1,2-H-PYRAN-[6-CARBOXYLATE] BUTYL 3,4-DIHYDRO-2,2-DIMETHYL-4-OXO-2H-PYRAN-6-CARBOXYLATE BUTYLMESITYL OXIDE BUTYLMESITYL OXIDE OXALATE (ALPHA,ALPHA')-DIMETHYL(ALPHA')CARBOBUTOXYDIHYDRO-(GAMMA)-PYRONE 3,4-DIHYDRO-2,2-DIMETHYL-4-OXO-2H-PYRAN-6-CARBOXYLIC ACID BUTYL ESTER 2,2-dimethyl-6-carbobutoxy-2,3-dihydro-4-pyrone 2-carbo-n-butoxy-6,6-dimethyl-5,6-dihydro-1,4-pyrone 3,4-dihydro-2,2-dimethyl-4-oxo-2h-pyran-6-carboxylicacibutylester 3,4-dihydro-2,2-dimethyl-4-oxo-2h-pyran-6-carboxylicacid,n-butylester 3,4-dihydro-2,2-dimethyl-4-oxo-2h-pyran-6-carboxylicacid-n-butylester 4-pyrone-2-carboxylicacid-5,6-dihydro-6,6-dimethyl,butylester n-butylesterof3,4-dihydro-2,2-dimethyl-4-oxo-2h-pyran-6-carboxylicacid n-butylmesityloxideoxalate 6-butoxycarbonyl-2,3-dihydro-2,2-dimethyl-4-pyrone 5,6-Dihydro-4-oxo-6,6-dimethyl-4H-pyran-2-carboxylic acid butyl ester Butopyronoxyl,85+% 4-keto-2,2-dimethyl-3H-pyran-6-carboxylic acid butyl ester butyl 2,2-dimethyl-4-oxo-3H-pyran-6-carboxylate Butyl 3,4-Dihydro-2,2-dimethyl-4-oxo-2H-pyran-6-carboxylate 3,4-Dihydro-2,2-dimethyl-4-oxo-2H-pyran-6-carboxylic Acid Butyl Ester Indalone BUTYLMESITYL OXIDE OXALATE, 1GM, NEAT BUTOPYRONOXYL, 85+% (INDALONE) DIHYDROPYRONE(R) INDALON INDALONE INDALONE(R) LABOTEST-BB LT00138120 BUTOPYRONOXYL alpha,alpha-dimethyl-alpha’-carboxydihydro-gamma-pyronebutylester bmoo butyl5,6-dihydro-6,6-dimethyl-4-oxo-4h-pyran-2-carboxylate butyldihydro-6,6-dimethyl-4-oxopyran-2-carboxylate ent9 n-butyl-3,4-dihydro-2,2-dimethyl-4-oxo-1,2h-pyran-6-carboxylate Indalone@100 μg/mL in Methanol Butopyronoxyl > dihydropyrone 532-34-3 Alphabetic B BI - BZ