![Spiramycin, compd. with 4,4'-methylenebis[3-hydroxy-2-naphthalenecarboxylic acid]](http://a0.leadongcdn.com/cloud/imBqpKorRilSjnkpipko/201241740017189.gif) |
![Spiramycin, compd. with 4,4'-methylenebis[3-hydroxy-2-naphthalenecarboxylic acid]](http://a2.leadongcdn.com/static/assets/images/transparent.png?1715861089508)
| Menge: | |
|---|---|
DY13961
67724-08-7
266-981-4
C157H244N6O50
Spiramycin, compd. with 4,4'-methylenebis[3-hydroxy-2-naphthalenecarboxylic acid]
| Index Name | Specifications |
| Appearance | A slightly yellowish powder |
| identification | Positive reaction |
| Related substances | RP17 490%(neospiramycin) 3.0%max RP6 962% 3.0%MAX No other impurities 3.0%min Other impurities included between 2 to 3% |
| Loss on drying | 5.0%max |
| Heavy metals | 20ppm max |
| Sulfated ash | 0.4%max |
| Assay | Assay as Embonic acid 27.0 to 33.0% Assay as spriamycin base 67.0 to 73.0% Microbiological assay not less than 2700iu/mg |
| Index Name | Specifications |
| Appearance | A slightly yellowish powder |
| identification | Positive reaction |
| Related substances | RP17 490%(neospiramycin) 3.0%max RP6 962% 3.0%MAX No other impurities 3.0%min Other impurities included between 2 to 3% |
| Loss on drying | 5.0%max |
| Heavy metals | 20ppm max |
| Sulfated ash | 0.4%max |
| Assay | Assay as Embonic acid 27.0 to 33.0% Assay as spriamycin base 67.0 to 73.0% Microbiological assay not less than 2700iu/mg |