USD $1.00-10.00 / Kilogram
it conforms to usp.we have gmp for this mterial.
it conforms to usp.
specific rotation: -71.0°~-78.0°
erythromycin a enol other: ≤3.0%
erythromycin b: ≤12.0%
erythromycin c: ≤5.0%
any individual related substance:≤3.0%
limit of thiocyanate: ≤0.3%
water :≤10.0%
residue on ignition :≤0.2%