Ascomycin from Streptomyces hygroscopicus var. ascomyceticus
SIGMA/A3835
Synonym: Changchuanmycin; FK-520; FR900520; Immunomycin; L 683590
CAS Number: 104987-12-4
Empirical Formula (Hill Notation): C43H69NO12
Molecular Weight: 792.01
MDL Number: MFCD06198665
Linear Formula: C43H69NO12
Product Type: Chemical
| antibiotic activity spectrum | fungi |
| form | powder |
| greener alternative category | , Re-engineered ![]() |
| greener alternative product characteristics | Designing Safer Chemicals Design for Energy Efficiency Learn more about the Principles of Green Chemistry . |
| greener alternative product score | old score: 59 new score: 54 Find out more about DOZN™ Scoring ![]() |
| InChI | 1S/C43H69NO12/c1-10-30-18 |
| InChI key | ZDQSOHOQTUFQEM-NURRSENYSA |
| mode of action | enzyme | inhibits |
| Quality Level | 200 ![]() |
| SMILES string | CCC1C=C(C)C[C@H](C)C[C@ |
| storage temp. | −20°C |
| sustainability | Greener Alternative Product |
| Biochem/physiol Actions: | Ascomycin is a strong immunosuppressant. It inhibits allogenic T-lymphocyte proliferation and can bind with high affinity to FKBP and inhibits calcineurin phosphatase in the nM range. |
| Biochem/physiol Actions: | Ascomycin (FK520) possesses high anti-fungal and immunosuppressant activity. Ascomycin has been shown to inhibit the peptidyl-prolyl cis-trans isomerase activity of FK-506-binding proteins of T cells. |
| General description: | Ascomycin (FK520) is a macrolide and macrolactone antibiotic isolated from the soil bacterium, Streptomyces hygroscopicus var. ascomyceticus. Ascomycin is a C21 ethyl analog of the macrolide tacrolimus (FK-506). It is a 23-membered polyketide macrolide. |
| General description: | Chemical structure: macrolactam |
| General description: | We are committed to bringing you Greener Alternative Products, which adhere to one of the four categories of Greener Alternatives . This product belongs to category of Re-engineered products, showing key improvements in Green Chemistry Principles “Designing Safer Chemicals” and “Design for Energy Efficiency”. Click here to view its DOZN scorecard. |
| Other Notes: | An FK506 analog with an ethyl rather than an allyl group at position 21. |
| Packaging: | 1 mg in glass bottle |
| Hazard Codes | Xn |
| Risk Statements | 20/21/22 |
| Safety Statements | 36/37 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Storage Temp. | −20°C |
| UNSPSC | 12352200 |

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