Sirolimus Isomer B

About Sirolimus Isomer B

Sirolimus Isomer B is an impurity of Sirolimus carrying the CAS registry number 157182-37-1. With the molecular formula C51H79NO13, it has a molar mass of 914.2 g/mol.

It is supplied as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Pharmaceutical QC and development laboratories use this impurity standard of Sirolimus to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

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

Industries

Related to Sirolimus

View every impurity, metabolite and intermediate we list for Sirolimus.

Sirolimus impurities

Specifications & identifiers

Chemical identifiers
Product name	Sirolimus Isomer B
Catalogue No.	VQ-044555
CAS Number	157182-37-1
IUPAC name	(1R,9S,12S,15R,16E,18R,19R,21R,23S,24E,26E,28E,30R,32S,35R)-1,18-dihydroxy-12-[(2R)-1-[(1S,3R,4R)-4-hydroxy-3-methoxycyclohexyl]propan-2-yl]-19,30-dimethoxy-15,17,21,23,29,35-hexamethyl-11,36-dioxa-4-azatricyclo[30.3.1.04,9]hexatriaconta-16,24,26,28-tetraene-2,3,10,14,20-pentone
Molecular formula	C₅₁H₇₉NO₁₃
Molecular weight	914.2 g/mol
Exact mass	913.5551
Grade	Reference Standard
HSN code	38229090
InChIKey	QFJCIRLUMZQUOT-RIPNRHRMSA-N
SMILES	C[C@@H]1CC[C@H]2C[C@H](/C(=C/C=C/C=C/[C@H](C[C@H](C(=O)[C@@H]([C@@H](/C(=C/[C@H](C(=O)C[C@H](OC(=O)[C@@H]3CCCCN3C(=O)C(=O)[C@@]1(O2)O)[C@H](C)C[C@@H]4CC[C@H]([C@@H](C4)OC)O)C)/C)O)OC)C)C)/C)OC
PubChem CID	9962928

Physical properties
Physical form	Solid
LogP (XLogP3)	6
H-bond donors / acceptors	3 / 13
TPSA	195 Å²

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Sirolimus Isomer B?

The CAS Registry Number of Sirolimus Isomer B is 157182-37-1.

What is the molecular formula and molecular weight of Sirolimus Isomer B?

Sirolimus Isomer B has the molecular formula C51H79NO13 and a molecular weight of 914.2 g/mol.

What is Sirolimus Isomer B used for?

Sirolimus Isomer B is supplied as a characterised reference material related to Sirolimus. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Sirolimus Isomer B can I order?

We supply Sirolimus Isomer B in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Sirolimus Isomer B?

Yes. Every lot of Sirolimus Isomer B is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Sirolimus Isomer B be shipped internationally?

Yes. We export Sirolimus Isomer B worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.