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ChemicalBook >> CAS DataBase List >> MILBEMECTIN A3

MILBEMECTIN A3

$263 - $4647
Product name: MILBEMECTIN A3
CAS: 51596-10-2
MF: C31H44O7
MW: 528.69
EINECS:
MDL Number:MFCD04972569
Synonyms:milbemectine a3;MILBEMECTIN A3;milbemycinb-2 ;(25R)-25-Methyl-5β-hydroxy-5-demethoxy-28-O,6β-cyclomilbemycin B;(6R,25R)-5-O-Demethyl-28-deoxy-6,28-epoxy-25-methylmilbemycin B;Antibiotic B-41A3;Milbemycin α1;B 41A3, MilbeMycin alpha1, MilbeMectin

Price13 Properties Safety Information Description

13 prices

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Brand

aablocks
American Custom Chemicals Corporation
Cayman Chemical
Usbiological

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1mg
5mg
10mg
25mg
50mg
100mg

Manufactureraablocks
Product numberAA00D8YX
Product description(2R,2a'E,2a1'S,4'E,5S,6R,6'R,8'E,11'R,15'S,17a'R,20'R,20a'R)-2a1',20'-Dihydroxy-5,6,6',8',19'-pentamethyl-2a1',3,4,5,6,6',7',10',11',14',15',17a',20',20a'-tetradecahydro-2'H,17'H-spiro[pyran-2,13'-[11,15]methano[1,5]dioxacyclooctadecino[9,8,7-cd]benzofuran]-17'-one >98%
Packaging1mg
Price$263
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA00D8YX
Product description(2R,2a'E,2a1'S,4'E,5S,6R,6'R,8'E,11'R,15'S,17a'R,20'R,20a'R)-2a1',20'-Dihydroxy-5,6,6',8',19'-pentamethyl-2a1',3,4,5,6,6',7',10',11',14',15',17a',20',20a'-tetradecahydro-2'H,17'H-spiro[pyran-2,13'-[11,15]methano[1,5]dioxacyclooctadecino[9,8,7-cd]benzofuran]-17'-one >98%
Packaging5mg
Price$602
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA00D8YX
Product description(2R,2a'E,2a1'S,4'E,5S,6R,6'R,8'E,11'R,15'S,17a'R,20'R,20a'R)-2a1',20'-Dihydroxy-5,6,6',8',19'-pentamethyl-2a1',3,4,5,6,6',7',10',11',14',15',17a',20',20a'-tetradecahydro-2'H,17'H-spiro[pyran-2,13'-[11,15]methano[1,5]dioxacyclooctadecino[9,8,7-cd]benzofuran]-17'-one >98%
Packaging10mg
Price$935
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA00D8YX
Product description(2R,2a'E,2a1'S,4'E,5S,6R,6'R,8'E,11'R,15'S,17a'R,20'R,20a'R)-2a1',20'-Dihydroxy-5,6,6',8',19'-pentamethyl-2a1',3,4,5,6,6',7',10',11',14',15',17a',20',20a'-tetradecahydro-2'H,17'H-spiro[pyran-2,13'-[11,15]methano[1,5]dioxacyclooctadecino[9,8,7-cd]benzofuran]-17'-one >98%
Packaging25mg
Price$1835
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA00D8YX
Product description(2R,2a'E,2a1'S,4'E,5S,6R,6'R,8'E,11'R,15'S,17a'R,20'R,20a'R)-2a1',20'-Dihydroxy-5,6,6',8',19'-pentamethyl-2a1',3,4,5,6,6',7',10',11',14',15',17a',20',20a'-tetradecahydro-2'H,17'H-spiro[pyran-2,13'-[11,15]methano[1,5]dioxacyclooctadecino[9,8,7-cd]benzofuran]-17'-one >98%
Packaging50mg
Price$2913
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA00D8YX
Product description(2R,2a'E,2a1'S,4'E,5S,6R,6'R,8'E,11'R,15'S,17a'R,20'R,20a'R)-2a1',20'-Dihydroxy-5,6,6',8',19'-pentamethyl-2a1',3,4,5,6,6',7',10',11',14',15',17a',20',20a'-tetradecahydro-2'H,17'H-spiro[pyran-2,13'-[11,15]methano[1,5]dioxacyclooctadecino[9,8,7-cd]benzofuran]-17'-one >98%
Packaging100mg
Price$4647
Updated2026-05-28
Buy

ManufacturerAmerican Custom Chemicals Corporation
Product numberAPI0016453
Product descriptionMILBEMYCIN ALPHA3 95.00%
Packaging5MG
Price$503.09
Updated2021-12-16
Buy

ManufacturerCayman Chemical
Product number18360
Product descriptionMilbemycin A3 ≥95%
Packaging1mg
Price$326
Updated2024-03-01
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ManufacturerCayman Chemical
Product number18360
Product descriptionMilbemycin A3 ≥85%
Packaging1mg
Price$359
Updated2026-04-30
Buy

ManufacturerCayman Chemical
Product number18360
Product descriptionMilbemycin A3 ≥95%
Packaging5mg
Price$977
Updated2024-03-01
Buy

ManufacturerCayman Chemical
Product number18360
Product descriptionMilbemycin A3 ≥85%
Packaging5mg
Price$1075
Updated2026-04-30
Buy

ManufacturerUsbiological
Product numberM3896-80
Product descriptionMilbemycin A3 ≥95%byHPLC
Packaging1mg
Price$704
Updated2026-06-03
Buy

ManufacturerUsbiological
Product numberM3896-80
Product descriptionMilbemycin A3
Packaging1mg
Price$561
Updated2021-12-16
Buy

Manufacturer	Product number	Product description	Packaging	Price	Updated	Buy
aablocks	AA00D8YX	(2R,2a'E,2a1'S,4'E,5S,6R,6'R,8'E,11'R,15'S,17a'R,20'R,20a'R)-2a1',20'-Dihydroxy-5,6,6',8',19'-pentamethyl-2a1',3,4,5,6,6',7',10',11',14',15',17a',20',20a'-tetradecahydro-2'H,17'H-spiro[pyran-2,13'-[11,15]methano[1,5]dioxacyclooctadecino[9,8,7-cd]benzofuran]-17'-one >98%	1mg	$263	2026-05-28	Buy
aablocks	AA00D8YX	(2R,2a'E,2a1'S,4'E,5S,6R,6'R,8'E,11'R,15'S,17a'R,20'R,20a'R)-2a1',20'-Dihydroxy-5,6,6',8',19'-pentamethyl-2a1',3,4,5,6,6',7',10',11',14',15',17a',20',20a'-tetradecahydro-2'H,17'H-spiro[pyran-2,13'-[11,15]methano[1,5]dioxacyclooctadecino[9,8,7-cd]benzofuran]-17'-one >98%	5mg	$602	2026-05-28	Buy
aablocks	AA00D8YX	(2R,2a'E,2a1'S,4'E,5S,6R,6'R,8'E,11'R,15'S,17a'R,20'R,20a'R)-2a1',20'-Dihydroxy-5,6,6',8',19'-pentamethyl-2a1',3,4,5,6,6',7',10',11',14',15',17a',20',20a'-tetradecahydro-2'H,17'H-spiro[pyran-2,13'-[11,15]methano[1,5]dioxacyclooctadecino[9,8,7-cd]benzofuran]-17'-one >98%	10mg	$935	2026-05-28	Buy
aablocks	AA00D8YX	(2R,2a'E,2a1'S,4'E,5S,6R,6'R,8'E,11'R,15'S,17a'R,20'R,20a'R)-2a1',20'-Dihydroxy-5,6,6',8',19'-pentamethyl-2a1',3,4,5,6,6',7',10',11',14',15',17a',20',20a'-tetradecahydro-2'H,17'H-spiro[pyran-2,13'-[11,15]methano[1,5]dioxacyclooctadecino[9,8,7-cd]benzofuran]-17'-one >98%	25mg	$1835	2026-05-28	Buy
aablocks	AA00D8YX	(2R,2a'E,2a1'S,4'E,5S,6R,6'R,8'E,11'R,15'S,17a'R,20'R,20a'R)-2a1',20'-Dihydroxy-5,6,6',8',19'-pentamethyl-2a1',3,4,5,6,6',7',10',11',14',15',17a',20',20a'-tetradecahydro-2'H,17'H-spiro[pyran-2,13'-[11,15]methano[1,5]dioxacyclooctadecino[9,8,7-cd]benzofuran]-17'-one >98%	50mg	$2913	2026-05-28	Buy
aablocks	AA00D8YX	(2R,2a'E,2a1'S,4'E,5S,6R,6'R,8'E,11'R,15'S,17a'R,20'R,20a'R)-2a1',20'-Dihydroxy-5,6,6',8',19'-pentamethyl-2a1',3,4,5,6,6',7',10',11',14',15',17a',20',20a'-tetradecahydro-2'H,17'H-spiro[pyran-2,13'-[11,15]methano[1,5]dioxacyclooctadecino[9,8,7-cd]benzofuran]-17'-one >98%	100mg	$4647	2026-05-28	Buy
American Custom Chemicals Corporation	API0016453	MILBEMYCIN ALPHA3 95.00%	5MG	$503.09	2021-12-16	Buy
Cayman Chemical	18360	Milbemycin A3 ≥95%	1mg	$326	2024-03-01	Buy
Cayman Chemical	18360	Milbemycin A3 ≥85%	1mg	$359	2026-04-30	Buy
Cayman Chemical	18360	Milbemycin A3 ≥95%	5mg	$977	2024-03-01	Buy
Cayman Chemical	18360	Milbemycin A3 ≥85%	5mg	$1075	2026-04-30	Buy
Usbiological	M3896-80	Milbemycin A3 ≥95%byHPLC	1mg	$704	2026-06-03	Buy
Usbiological	M3896-80	Milbemycin A3	1mg	$561	2021-12-16	Buy

Properties

Melting point :212-215°; mp 192-194°
alpha :D20 +106° (c = 0.25 in acetone) (Aoki); D20 +106° (acetone) (Hirama)
Boiling point :725.5±60.0 °C(Predicted)
Density :1.21±0.1 g/cm3(Predicted)
storage temp. :0-6°C
solubility :DMF: Soluble; DMSO: Soluble; Ethanol: Soluble; Methanol: Soluble
form :A solid
pka :12.46±0.70(Predicted)
color :White to light yellow
Henry's Law Constant :6.5×10² mol/(m³Pa) at 25℃, Maniere et al. (2011)
InChIKey :ZLBGSRMUSVULIE-HIKHPYAJNA-N
EPA Substance Registry System :Milbemycin A3 (51596-10-2)

Safety Information

Symbol(GHS):

Signal word:

Hazard statements:

Code	Hazard statements	Hazard class	Category	Signal word	Pictogram	P-Codes

Precautionary statements:

Description

Milbemycin A₃ is a member of a complex family of macrocyclic lactones that contain a characteristic spiroketal group produced from the fermentation of soil bacterium S. hygroscopicus subsp. aureolacrimosus. As a compound that potentiates glutamate and GABA-gated chloride-channel opening, milbemycin A₃ is used as a nematocide and insecticide. The acaricidal and nematocidal activity of a mixture of milbemycin A₃ and milbemycin A₄ against adult spider mites, spider mite eggs, and C. elegans are reported at IC₅₀ values of 5.3, 41.1, and 9.5 μg/ml.

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MILBEMECTIN A3

Properties

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Description

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