Stearic Acid-1-13C

Name: Stearic Acid-1-13C
Brand: Vaqora Chemicals
SKU: VQ-052403

About Stearic Acid-1-13C

Listed under CAS 85541-42-0, Stearic Acid-1-13C is a stable isotope labelled standard available from Vaqora Chemicals. Its molecular formula is C18H36O2 and its molecular weight is 285.5 g/mol. Systematically, it is named (113C)octadecanoic acid. It is also known as (1-~13~C)Octadecanoic acid or Octadecanoic acid-1-13C.

The product is provided as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. It carries the GHS signal word “Warning” with 1 hazard statement. Review the Safety Data Sheet before use.

Its mass shift relative to the unlabelled analyte makes it a dependable internal standard for LC-MS/MS assays, improving accuracy in bioanalysis, therapeutic drug monitoring and method validation. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer Stearic Acid-1-13C in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

LC-MS/MS internal standard
Bioanalytical quantitation
Pharmacokinetic studies

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Stearic Acid-1-13C
Catalogue No.	VQ-052403
CAS Number	85541-42-0
IUPAC name	(113C)octadecanoic acid
Molecular formula	C₁₈H₃₆O₂
Molecular weight	285.5 g/mol
Exact mass	285.2749
Grade	Reference Standard
HSN code	38229090
InChIKey	QIQXTHQIDYTFRH-CPZJZEHKSA-N
SMILES	CCCCCCCCCCCCCCCCC[13C](=O)O
PubChem CID	16211897

Physical properties
Physical form	Solid
LogP (XLogP3)	7.4
H-bond donors / acceptors	1 / 2
TPSA	37.3 Å²
Synonyms	(1-~13~C)Octadecanoic acid, Octadecanoic acid-1-13C, Stearic Acid-13C, Octadecanoicacid-1-13c, stearic-1-13C acid

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation

Precautionary statements: P264, P280, P302 + P352, P321, P332 + P317, P362 + P364

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

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 Stearic Acid-1-13C?

The CAS Registry Number of Stearic Acid-1-13C is 85541-42-0. It is also known as (1-~13~C)Octadecanoic acid, Octadecanoic acid-1-13C, Stearic Acid-13C.

What is the molecular formula and molecular weight of Stearic Acid-1-13C?

Stearic Acid-1-13C has the molecular formula C18H36O2 and a molecular weight of 285.5 g/mol. Its IUPAC name is (113C)octadecanoic acid.

Which grade and pack sizes of Stearic Acid-1-13C can I order?

We supply Stearic Acid-1-13C 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 Stearic Acid-1-13C?

Yes. Every lot of Stearic Acid-1-13C 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 Stearic Acid-1-13C be shipped internationally?

Yes. Stearic Acid-1-13C is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.