Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Milbemycin A3
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: MILBEMECTIN A3
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

51596-10-2

51596-10-2 structure

51596-10-2 structure

Name: Milbemycin A3
Chemical Name: milbemycin A3
CAS Number: 51596-10-2
Molecular Formula: C₃₁H₄₄O₇
Molecular Weight: 528.677
Create Date: 2018-03-23 08:00:00
Modify Date: 2025-08-21 11:39:53

Name	milbemycin A3
Synonyms	(2aE,4E,5'S,6R,6'R,8E,11R,13R,15S,17aR,20R,20aR,20bS)-20,20b-dihydroxy-5',6,6',8,19-pentamethyl-3',4',5',6,6',7,10,11,14,15,17a,20,20a,20b-tetradecahydro-2H,17H-spiro[11,15-methanofuro[4,3,2-pq][2,6]benzodioxacyclooctadecine-13,2'-pyran]-17-one milbemycinb-2 milbemectine a3 Milbemycin A3 milbemycin (6R,25R)-5-O-Demethyl-28-deoxy-6,28-epoxy-25-methylmilbemycin (1'R,2R,4'S,5S,6R,8'R,10'E,13'R,14'E,16'E,20'R,21'R,24'S)-21',24'-Dihydroxy-5,6,11',13',22'-pentamethyl-3,4,5,6-tetrahydro-2'H-spiro[pyran-2,6'-[3,7,19]trioxatetracyclo[15.6.1.1.0]pentacosa[10,14,16,22]tetraen]-2'-on MILBEMECTIN A3 (1'R,2R,4'S,5S,6R,8'R,10'E,13'R,14'E,16'E,20'R,21'R,24'S)-21',24'-Dihydroxy-5,6,11',13',22'-pentaméthyl-3,4,5,6-tétrahydro-2'H-spiro[pyran-2,6'-[3,7,19]trioxatétracyclo[15.6.1.1.0]pentacosa[10,14,16,22]tétraén]-2'-one Antibiotic B-41A3 (1'R,2R,4'S,5S,6R,8'R,10'E,13'R,14'E,16'E,20'R,21'R,24'S)-21',24'-Dihydroxy-5,6,11',13',22'-pentamethyl-3,4,5,6-tetrahydro-2'H-spiro[pyran-2,6'-[3,7,19]trioxatetracyclo[15.6.1.1.0]pentacosa[10,14,16,22]tetraen]-2'-one (1'R,2R,4'S,5S,6R,8'R,10'E,13'R,14'E,16'E,20'R,21'R,24'S)-21',24'-Dihydroxy-5,6,11',13',22'-pentamethyl-3,4,5,6-tetrahydro-2'H-spiro[pyran-2,6'-[3,7,19]trioxatetracyclo[15.6.1.1.0]pentacos a[10,14,16,22]tetraen]-2'-one

Density	1.2±0.1 g/cm3
Boiling Point	725.5±60.0 °C at 760 mmHg
Molecular Formula	C₃₁H₄₄O₇
Molecular Weight	528.677
Flash Point	233.2±26.4 °C
Exact Mass	528.308716
PSA	94.45000
LogP	5.85
Vapour Pressure	0.0±5.3 mmHg at 25°C
Index of Refraction	1.577

RIDADR	UN 2588
Packaging Group	III
Hazard Class	6.1(b)

1053268-82-8 structure

1053268-82-8

~%

51596-10-2 structure

51596-10-2

Literature: Ley, Steven V.; Madin, Andrew; Monck, Nathaniel J. T. Tetrahedron Letters, 1993 , vol. 34, # 46 p. 7479 - 7482

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