Ascomycin

Modify Date: 2025-08-21 11:27:32

Ascomycin Structure
Ascomycin structure
Common Name Ascomycin
CAS Number 104987-12-4 Molecular Weight 792.008
Density 1.2±0.1 g/cm3 Boiling Point 868.3±75.0 °C at 760 mmHg
Molecular Formula C43H69NO12 Melting Point 153-157ºC
MSDS Chinese USA Flash Point 478.9±37.1 °C
Symbol GHS02 GHS07
GHS02, GHS07
Signal Word Danger

 Use of Ascomycin


Ascomycin(Immunomycin, FR-900520, FK520) is an ethyl analog of tacrolimus (FK506) with strong immunosuppressant properties. IC50 Value: 0.55 nM [1]Target: in vitro: When we used either CD4+CD8+ thymocytes or peripheral T cells activated by phorbol ester and ionomycin, the cell surface induction of CD5 was also partially blocked by CsA, FK-520 and rapamycin [2]. Ascomycinalso had a 3-fold lower immunosuppressive potency in a popliteal lymph node hyperplasia assay, resulting in an equivalent therapeutic index consistent with a common mechanistic dependence on calcineurin inhibition [3].in vivo: In 14-day studies, nephrotoxicity was not induced by continuous i.p. infusion of ascomycin at 10 mg/kg/day or daily oral administration (up to 50 mg/kg/day) in rats on a normal diet, nor by continuous i.v. infusion (up to 6 mg/kg/day) in rats on a low salt diet to enhance susceptibility [3].

 Names

Name ascomycin
Synonym More Synonyms

 Ascomycin Biological Activity

Description Ascomycin(Immunomycin, FR-900520, FK520) is an ethyl analog of tacrolimus (FK506) with strong immunosuppressant properties. IC50 Value: 0.55 nM [1]Target: in vitro: When we used either CD4+CD8+ thymocytes or peripheral T cells activated by phorbol ester and ionomycin, the cell surface induction of CD5 was also partially blocked by CsA, FK-520 and rapamycin [2]. Ascomycinalso had a 3-fold lower immunosuppressive potency in a popliteal lymph node hyperplasia assay, resulting in an equivalent therapeutic index consistent with a common mechanistic dependence on calcineurin inhibition [3].in vivo: In 14-day studies, nephrotoxicity was not induced by continuous i.p. infusion of ascomycin at 10 mg/kg/day or daily oral administration (up to 50 mg/kg/day) in rats on a normal diet, nor by continuous i.v. infusion (up to 6 mg/kg/day) in rats on a low salt diet to enhance susceptibility [3].
Related Catalog
References

[1]. Hatanaka H, Kino T, Miyata S, FR-900520 and FR-900523, novel immunosuppressants isolated from a Streptomyces. II. Fermentation, isolation and physico-chemical and biological characteristics. J Antibiot (Tokyo). 1988 Nov;41(11):1592-601.

[2]. Teutsch M, Higer M, Wang D, Induction of CD5 on B and T cells is suppressed by cyclosporin A, FK-520 and rapamycin. Int Immunol. 1995 Mar;7(3):381-92.

[3]. Mollison KW, Fey TA, Krause RA, Nephrotoxicity studies of the immunosuppressants tacrolimus (FK506) and ascomycin in rat models. Toxicology. 1998 Feb 6;125(2-3):169-81.

 Chemical & Physical Properties

Density 1.2±0.1 g/cm3
Boiling Point 868.3±75.0 °C at 760 mmHg
Melting Point 153-157ºC
Molecular Formula C43H69NO12
Molecular Weight 792.008
Flash Point 478.9±37.1 °C
Exact Mass 791.481995
PSA 178.36000
LogP 3.81
Vapour Pressure 0.0±0.6 mmHg at 25°C
Index of Refraction 1.546
InChIKey ZDQSOHOQTUFQEM-JMVRLGAHSA-N
SMILES CCC1C=C(C)CC(C)CC(OC)C2OC(O)(C(=O)C(=O)N3CCCCC3C(=O)OC(C(C)=CC3CCC(O)C(OC)C3)C(C)C(O)CC1=O)C(C)CC2OC
Storage condition −20°C
Water Solubility Soluble in DMSO at 65mg/ml; soluble in ethanol at 50mg/m; with warming. Very poorly soluble in water

 Safety Information

Symbol GHS02 GHS07
GHS02, GHS07
Signal Word Danger
Hazard Statements H225-H302 + H332-H319
Precautionary Statements P210-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xn: Harmful;
Risk Phrases R20/21/22
Safety Phrases 36/37
RIDADR UN 1648 3 / PGII
WGK Germany 3
RTECS KD4185000
HS Code 29419090

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 Synonyms

(1R,9S,12S,13R,14S,17R,18E,21S,23S,24R,25S,27R)-17-Ethyl-1,14-dihydroxy-12-{(1E)-1-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-1-propen-2-yl}-23,25-dimethoxy-13,19,21,27-tetramethyl-11,28-dioxa-4-azatr ;icyclo[22.3.1.0]octacos-18-ene-2,3,10,16-tetrone
immunomycin
4H-Pyrrolo3,2-dpyrimidin-4-one,7-(2S,3S,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)-2-pyrrolidinyl-1,5-dihydro
(3S,4R,5S,8R,9E,12S,14S,15R,16S,18R,19R,26aS)-8-ethyl-5,19-dihydroxy-3-{(1E)-1-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]prop-1-en-2-yl}-14,16-dimethoxy-4,10,12,18-tetramethyl-5,6,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-hexadecahydro-3H-15,19-epoxypyrido[2,1-c][1,4]oxazacyclotricosine-1,7,20,21(4H,23H)-tetrone
(1R,9S,12S,13R,14S,17R,18Z,21S,23S,24R,25S,27R)-17-Ethyl-1,14-dihydroxy-12-{(1E)-1-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-1-propen-2-yl}-23,25-dimethoxy-13,19,21,27-tetramethyl-11,28-dioxa-4-azatr ;icyclo[22.3.1.0]octacos-18-ene-2,3,10,16-tetrone
(1S)-1-(9-deazahypoxanthin-9-yl)-1,4-dideoxy-1,4-iMino-D-ribitol,iMMucillin H
7-((2S,3S,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)pyrrolidin-2-yl)-3H-pyrrolo[3,2-d]pyrimidin-4(5H)-one
Ascomycin
changchuanmycin
(1R,9S,12S,13R,14S,17R,18E,21S,23S,24R,25S,27R)-17-Ethyl-1,14-dihydroxy-12-{(1E)-1-[(1R,3R,4R)-4-hydroxy-3-methoxycyclohexyl]prop-1-en-2-yl}-23,25-dimethoxy-13,19,21,27-tetramethyl-11,28-dioxa-4-azatricyclo[22.3.1.0]octacos-18-ene-2,3,10,16-tetrone
7-[(2S,3S,4R,5R)-3,4-Dihydroxy-5-(hydroxymethyl)-2-pyrrolidinyl]-3,5-dihydro-4H-pyrrolo[3,2-d]pyrimidin-4-one
(1S)-1-(9-deazahypoxanthin-9-yl)-1,4-dideoxy-1,4-imino-D-ribitol
Isopamphos
Immucillin-H
1,4-dideoxy-(1S)-1-C-(4-hydroxypyrrolo[3,2-d]pyrimidin-7-yl)-1,4-imino-D-ribitol
MFCD00467131
Fodosine
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