Milbemycin A3

Name: Milbemycin A3
Brand: Vaqora Chemicals
SKU: VQ-026697

About Milbemycin A3

Milbemycin A3 is an impurity of Milbemycin carrying the CAS registry number 51596-10-2. Its molecular formula is C31H44O7 and its molecular weight is 528.7 g/mol. Alternative names: Milbemectin A3 and Milbemectin.

The product is provided as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

This Milbemycin impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Milbemycin A3 in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Milbemycin

View every impurity, metabolite and intermediate we list for Milbemycin.

Milbemycin impurities

Specifications & identifiers

Chemical identifiers
Product name	Milbemycin A3
Catalogue No.	VQ-026697
CAS Number	51596-10-2
IUPAC name	(1R,4S,5'S,6R,6'R,8R,10E,13R,14E,16E,20R,21R,24S)-21,24-dihydroxy-5',6',11,13,22-pentamethylspiro[3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene-6,2'-oxane]-2-one
Molecular formula	C₃₁H₄₄O₇
Molecular weight	528.7 g/mol
Exact mass	528.3087
Grade	Reference Standard
HSN code	38229090
InChIKey	ZLBGSRMUSVULIE-GSMJGMFJSA-N
SMILES	C[C@H]1CC[C@]2(C[C@@H]3C[C@H](O2)C/C=C(/C[C@H](/C=C/C=C/4\CO[C@H]5[C@@]4([C@@H](C=C([C@H]5O)C)C(=O)O3)O)C)\C)O[C@@H]1C
PubChem CID	9828343

Physical properties
Physical form	Solid
LogP (XLogP3)	3.1
H-bond donors / acceptors	2 / 7
TPSA	94.5 Å²
Synonyms	Milbemectin A3, Milbemectin, Emamectin A3, Koromite, (6R,25R)-5-O-Demethyl-28-deoxy-6,28-epoxy-25-methylmilbemycin B, milbemycin alpha1, mixture of milbemycins A3 and A4, Milbemycin, Milbemycin alpha4, Milbemycin alpha13, Milbemycin alpha14, Milbemectin [ISO]

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Environmental hazard

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H332Harmful if inhaled
H373May causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P260, P261, P264, P270, P271, P273, P301 + P317, P304 + P340, P317, P319, P330, P391, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Milbemycin A3?

The CAS Registry Number of Milbemycin A3 is 51596-10-2. It is also known as Milbemectin A3, Milbemectin, Emamectin A3.

What is the molecular formula and molecular weight of Milbemycin A3?

Milbemycin A3 has the molecular formula C31H44O7 and a molecular weight of 528.7 g/mol.

What is Milbemycin A3 used for?

Milbemycin A3 is supplied as a characterised reference material related to Milbemycin. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Milbemycin A3 can I order?

We supply Milbemycin A3 in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Milbemycin A3?

Yes. Every lot of Milbemycin A3 is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Milbemycin A3 be shipped internationally?

Yes. Milbemycin A3 is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.