Avermectin B1b Property

Boiling point:

934.6±65.0 °C(Predicted)

Density 

1.25±0.1 g/cm3(Predicted)

storage temp. 

Store at -20°C

solubility 

Soluble in DMSO

form 

solid

pka

12.42±0.70(Predicted)

color 

white

Stability:

Unstable in Solution, Very Hygroscopic

EPA Substance Registry System

Avermectin B1b (65195-56-4)

Safety

RIDADR 

2588

HazardClass 

6.1(a)

PackingGroup 

II

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H300Fatal if swallowed

H332Harmful if inhaled

H400Very toxic to aquatic life

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P273Avoid release to the environment.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P312Call a POISON CENTER or doctor/physician if you feel unwell.

P321Specific treatment (see … on this label).

P330Rinse mouth.

P391Collect spillage. Hazardous to the aquatic environment

P405Store locked up.

P501Dispose of contents/container to..…

Avermectin B1b Chemical Properties,Usage,Production

Uses

Avermectin B1b is the minor component (<20%) of a commercially available anthelmintic used to control parasitic nematodes in livestock. Avermectin B1b contains a isopropyl residue in the 25-position. In vitro and in vivo studies have shown this analogue to be active, but less potent than the B1a analogue

Definition

ChEBI: Avermectin B1b is an avermectin.

brand name

(Merck)Avomec [Veterinary] (Merial); Bovitin [Veterinary] (Merial); Doratect [Veterinary] (Merial); Duomectin [Veterinary] (Merial); Duotin [Veterinary] (Merial); Endecto (Merck); Enzec (Merck); Enzek (Merck); Parafoil (Merck); Vertimil (Zectin (Merck).

Biological Activity

avermectin b1 is a mixture of avermectins containing >80% avermectin b1a and <20% avermectin b1b. b1a and b1b have very similar biological and toxicological properties.

in vitro

the avermectins are insecticidal and antihelmintic compounds derived from various laboratory broths fermented by the soil bacterium. avermectin b1 is a natural fermentation product of this bacterium.

in vivo

avermectin b1 therapy resulted in significant decreases in mean strongyle egg after treatment. all horses given ivermectin or avermectin b1 had zero strongyle egg counts 14 and 28 d after treatment. the oral administration of avermectin b1 appeared to be highly efficacious against intestinal strongyles and onchocera microfilaria [1].

References

[1] mogg td, pollitt cc, willmore jp, thompson h. efficacy of avermectin b1 given orally against equine intestinal strongyles and onchocera microfilaria. aust vet j. 1990;67(11):399-401.