5-Chloro-3-methyl-1-phenylpyrazole-4-carbalde… 947-95-5

About 5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde

5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde is an API impurity reference standard carrying the CAS registry number 947-95-5. Its molecular formula is C11H9ClN2O and its molecular weight is 220.65 g/mol. Alternative names: 5-Chloro-4-formyl-3-methyl-1-phenylpyrazole and CS-M3111.

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Pharmaceutical QC and development laboratories use this impurity standard of the parent drug substance to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, 5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

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

Industries

Specifications & identifiers

Chemical identifiers
Product name	5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde
Catalogue No.	VQ-040027
CAS Number	947-95-5
IUPAC name	5-chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde
Molecular formula	C₁₁H₉ClN₂O
Molecular weight	220.65 g/mol
Exact mass	220.0403
Grade	Reference Standard
HSN code	38229090
InChIKey	DKZPJLZXLKAMDO-UHFFFAOYSA-N
SMILES	CC1=NN(C(=C1C=O)Cl)C2=CC=CC=C2
PubChem CID	613027

Physical properties
Physical form	Solid
LogP (XLogP3)	2.7
H-bond donors / acceptors	0 / 2
TPSA	34.9 Å²
Synonyms	5-Chloro-3-methyl-1-phenyl-1H-pyrazole-4-carbaldehyde, 5-Chloro-4-formyl-3-methyl-1-phenylpyrazole, 5-Chloro-3-methyl-1-phenyl-4-pyrazolecarboxaldehyde, 5-chloro-3-methyl-1-phenylpyrazole-4-carboxaldehyde, 5-Chloro-3-methyl-1-phenyl-1H-pyrazole-4-carboxaldehyde, 5-Chloro-3-methyl-1-phenyl pyrazole-4-aldehyde, CS-M3111, chloro-3-methyl-1-phenylpyrazole-4-carboxaldehyde, Pyrazole-4-carboxaldehyde, 5-chloro-3-methyl-1-phenyl-, 1H-Pyrazole-4-carboxaldehyde, 5-chloro-3-methyl-1-phenyl-, 1H-Pyrazole-4-carboxaldehyde,5-chloro-3-methyl-1-phenyl-

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

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 5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde?

The CAS Registry Number of 5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde is 947-95-5. It is also known as 5-Chloro-3-methyl-1-phenyl-1H-pyrazole-4-carbaldehyde, 5-Chloro-4-formyl-3-methyl-1-phenylpyrazole, 5-Chloro-3-methyl-1-phenyl-4-pyrazolecarboxaldehyde.

What is the molecular formula and molecular weight of 5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde?

5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde has the molecular formula C11H9ClN2O and a molecular weight of 220.65 g/mol. Its IUPAC name is 5-chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde.

Which grade and pack sizes of 5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde can I order?

We supply 5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde 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 5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde?

Yes. Every lot of 5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde 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 5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde be shipped internationally?

Yes. 5-Chloro-3-methyl-1-phenylpyrazole-4-carbaldehyde 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.