Erythromycin Lactobionate Usp API Manufacturer

We are offering erythromycin lactobionate usp api manufacturer.
Name of api:erythromycin lactobionate usp
cas no: 114-07-8
category:-chemotherapeutic agents
sub category:-antibiotics and antimicrobial agents
uses:antibiotics
molecular weight:733.93
molecular formula:c37h67no13 
chemical name:(3r,4s,5s,6r,7r,9r,11r,12r,13s,14r)-6-{[(2s,3r,4s,6r)-4-(dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy}-14-ethyl-7,12,13-trihydroxy-4-{[(2r,4r,5s,6s)-5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy}-3,5,7,9,11,13-hexamethyl-1-oxacyclotetradecane-2,10-dione
specifications:
1. Name of product:-erythromycin ethylsuccinate
2. Appearance :-white or slightly yellow crystals or powder
3. Ph :-between 6.5–7.5
4. Solubility:-freely soluble in water, in alcohol, in methanol, in dioxane, and in propylene glycol; slightly soluble in acetone and in chloroform; practically insoluble in ether, in carbon tetrachloride, in benzene, and in toluene.
5. Identification:-ir
6. Water content by kf:-nmt 5.0%
7. Bacterial endotoxins test:-nmt 1.0 usp eumg
8. Assay:-90.0%–115.0%
9. Heavy metals:-50ppm
10.residue on ignition:nmt 2.0%
11.assay:-90.0%–120.0%