Avermectin B1b
* Please be kindly noted products are not for therapeutic use. We do not sell to patients.

Category | Bioactive by-products |
Catalog number | BBF-04030 |
CAS | 65195-56-4 |
Molecular Weight | 859.05 |
Molecular Formula | C47H70O14 |
Purity | ≥95% |
Online Inquiry
Capabilities & Facilities
Fermentation Lab
4 R&D and scale-up labs
2 Preparative purification labs
Fermentation Plant
Semi pilot, pilot and industrial plant 4 Manufacturing sites 7 Production lines at pilot scale 100+ Reactors of 30-4000 L; 170+ reactors of 20 KL-30 KL; 24+ reactors of >100 KL 2 Hydrogenation reactors (200 L, 4Mpa and 1000L, 4Mpa)
Product Description
Avermectin B1b is the minor component of the commercially available anthelmintic marketed as Abamectin. It is used broadly against nematodes, ticks, flies, and ants.
- Specification
- Properties
- Toxicity
- Reference Reading
- Spectrum
- Price Product List
Synonyms | Ivermectin EP Impurity B; 5-O-Demethyl-25-de(1-methylpropyl)-25-(1-methylethyl)-avermectin A1a; Doramectin Impurity 2 |
Storage | Store at -20°C |
IUPAC Name | (1'R,2R,3S,4'S,6S,8'R,10'E,12'S,13'S,14'E,16'E,20'R,21'R,24'S)-21',24'-dihydroxy-12'-[(2R,4S,5S,6S)-5-[(2S,4S,5S,6S)-5-hydroxy-4-methoxy-6-methyloxan-2-yl]oxy-4-methoxy-6-methyloxan-2-yl]oxy-3,11',13',22'-tetramethyl-2-propan-2-ylspiro[2,3-dihydropyran-6,6'-3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene]-2'-one |
Canonical SMILES | CC1C=CC=C2COC3C2(C(C=C(C3O)C)C(=O)OC4CC(CC=C(C1OC5CC(C(C(O5)C)OC6CC(C(C(O6)C)O)OC)OC)C)OC7(C4)C=CC(C(O7)C(C)C)C)O |
InChI | InChI=1S/C47H70O14/c1-24(2)41-27(5)16-17-46(61-41)22-33-19-32(60-46)15-14-26(4)42(25(3)12-11-13-31-23-54-44-39(48)28(6)18-34(45(50)57-33)47(31,44)51)58-38-21-36(53-10)43(30(8)56-38)59-37-20-35(52-9)40(49)29(7)55-37/h11-14,16-18,24-25,27,29-30,32-44,48-49,51H,15,19-23H2,1-10H3/b12-11+,26-14+,31-13+/t25-,27-,29-,30-,32+,33-,34-,35-,36-,37-,38-,39+,40-,41+,42-,43-,44+,46+,47+/m0/s1 |
InChI Key | ZFUKERYTFURFGA-PVVXTEPVSA-N |
Source | Streptomyces avermitilis |
Appearance | White Solid |
Antibiotic Activity Spectrum | parasites |
Boiling Point | 934.6°C at 760 mmHg |
Melting Point | 150-157°C |
Density | 1.25 g/cm3 |
Solubility | Soluble in ethanol, methanol, DMF, DMSO |
Carcinogenicity | Not listed by IARC. |
Mechanism Of Toxicity | It has low solubility in water and extensive non-specific binding. It opens GABA-insensitive chloride channels, reducing membrane resistance and increasing conductance inward. |
Predicted LC-MS/MS Spectrum - 10V, Positive

Experimental Conditions
Collision Energy: 10 eV
Instrument Type: QTOF (generic), spectrum predicted by CFM-ID
Mass Resolution: 0.0001 Da
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Bio Calculators
* Our calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
It is commonly abbreviated as: C1V1 = C2V2
