Ascomycin

Name: Ascomycin
Brand: Zemixal
SKU: ZX-027062

Reference StandardAvailable on request

Buy Ascomycin (CAS 104987-12-4) from Zemixal. Lab and bulk packs, batch COA, fast global delivery. Part of our API Impurities range.

Pack sizes

CAS number104987-12-4

FormulaC₄₃H₆₉NO₁₂

Molar mass792 g/mol

Physical formSolid

HS code38229090

InChIKeyZDQSOHOQTUFQEM-NURRSENYSA-N

About Ascomycin

Ascomycin belongs to the Tacrolimus reference-standard family in the Zemixal catalogue. Identity at a glance (Reference Standard): CAS 104987-12-4, formula C43H69NO12 and molar mass 792 g/mol. It is handled as a solid.

Common uses in the lab and plant

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Safe handling

Classified under GHS with signal word Warning and hazard statements H302, H312 and H332. Read the SDS before first use.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Each lot travels with a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Tacrolimus

See every impurity, metabolite and related compound we list for this API.

Tacrolimus standards

Typical uses

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QC Research Labs and Universities

Specifications and identifiers

Specifications of Ascomycin
Product name	Ascomycin
Catalogue number	ZX-027062
CAS number	104987-12-4
IUPAC name	(1R,9S,12S,13R,14S,17R,18E,21S,23S,24R,25S,27R)-17-ethyl-1,14-dihydroxy-12-[(E)-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[22.3.1.04,9]octacos-18-ene-2,3,10,16-tetrone
Molecular formula	C₄₃H₆₉NO₁₂
Molar mass	792 g/mol
Exact mass	791.482
Grade	Reference Standard
Physical form	Solid
XLogP3	2.5
H-bond donors / acceptors	3 / 12
Topological polar surface area	178 Å²
HS code	38229090
InChIKey	ZDQSOHOQTUFQEM-NURRSENYSA-N
SMILES	CC[C@@H]1/C=C(/C[C@@H](C[C@@H]([C@@H]2[C@H](C[C@H]([C@@](O2)(C(=O)C(=O)N3CCCC[C@H]3C(=O)O[C@@H]([C@@H]([C@H](CC1=O)O)C)/C(=C/[C@@H]4CC[C@H]([C@@H](C4)OC)O)/C)O)C)OC)OC)C)\C
PubChem CID	5282071
Synonyms	Immunomycin, Changchuanmycin, FK-520, FR-520, FK 520, EX-A1796, FR 520, Fermentation product from Streptomyces hygroscopicus, Ascomycin, Streptomyces hygroscopicus var ascomyceticus, Ascomycin from Streptomyces hygroscopicus var. ascomyceticus

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

Irritant or harmful

Signal word Warning

H302Harmful if swallowed
H312Harmful in contact with skin
H332Harmful if inhaled

Precautionary statements P261, P264, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P317, P321, P330, P362 + P364, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Ascomycin
10 mg	Quoted on request
25 mg	Quoted on request
50 mg	Quoted on request
100 mg	Quoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Ascomycin

Which CAS number identifies Ascomycin?

Ascomycin is registered under CAS 104987-12-4. You may also see it listed as Immunomycin, Changchuanmycin, FK-520. Our catalogue number for this item is ZX-027062.

What are the formula and molar mass of Ascomycin?

For Ascomycin, its formula is C43H69NO12 and its molar mass is 792 g/mol. InChIKey ZDQSOHOQTUFQEM-NURRSENYSA-N lets you match it in any structure database.

How is Ascomycin used in pharmaceutical QC?

Ascomycin is a characterised reference material linked to Tacrolimus. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.

What grade and pack sizes are available for Ascomycin?

This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.

Which documents come with Ascomycin?

Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.

Can Zemixal ship Ascomycin to my country?

Yes. Because Ascomycin is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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