Risedronate EP Impurity B

Name: Risedronate EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-023642

About Risedronate EP Impurity B

Vaqora Chemicals supplies Risedronate EP Impurity B, a pharmacopeial impurity of Risedronate registered under CAS number 105462-23-5. Formula C7H11NO7P2, molecular weight 283.11 g/mol. The IUPAC name is (1-hydroxy-1-phosphono-2-pyridin-2-ylethyl)phosphonic acid. Common synonyms include Risedronate Related Compound A and Risedronate Sodium - Impurity B.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

Pharmaceutical QC and development laboratories use this impurity standard of Risedronate to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer Risedronate EP Impurity B in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Pharmacopeial method verification
Impurity profiling
QC release testing
ANDA / DMF filings

Industries

Related to Risedronate

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

Risedronate impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Risedronate EP Impurity B
Catalogue No.	VQ-023642
CAS Number	105462-23-5
IUPAC name	(1-hydroxy-1-phosphono-2-pyridin-2-ylethyl)phosphonic acid
Molecular formula	C₇H₁₁NO₇P₂
Molecular weight	283.11 g/mol
Exact mass	283.0011
Grade	Reference Standard
HSN code	38229090
InChIKey	XXNASZAYANFLID-UHFFFAOYSA-N
SMILES	C1=CC=NC(=C1)CC(O)(P(=O)(O)O)P(=O)(O)O
PubChem CID	405372

Physical properties
Physical form	Solid
LogP (XLogP3)	-3.1
H-bond donors / acceptors	5 / 8
TPSA	148 Å²
Synonyms	Risedronate Related Compound A, Risedronate Sodium - Impurity B, Risedronate 2-pyridinyl isomer, (1-Hydroxy-2-(pyridin-2-yl)ethylidene)bis(phosphonic acid), [1-hydroxy-1-phosphono-2-(pyridin-2-yl)ethyl]phosphonic acid, Phosphonic acid, P,P'-(1-hydroxy-2-(2-pyridinyl)ethylidene)bis-, (1-hydroxy-1-phosphono-2-(pyridin-2-yl)ethyl)phosphonic acid, Risedronate sodium 2.5-hydrate impurity B, 1-Hydroxy-2-(2-pyridinyl) Risedronate, [1-hydroxy-2-(2-pyridinyl)ethylidene]bis(phosphonic acid), [1-Hydroxy-2-(2-pyridinyl)ethylidene]bis[phosphonic acid], 2-(2-Hydroxy-2,2-bis-phosphono-ethyl)-pyridinium

Safety & hazard information (GHS)

Health hazard

Signal word: Danger

Hazard statements

H317May cause an allergic skin reaction
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

Precautionary statements: P233, P260, P261, P271, P272, P280, P284, P302 + P352, P304 + P340, P321, P333 + P317, P342 + P316, P362 + P364, P403, 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 Risedronate EP Impurity B?

The CAS Registry Number of Risedronate EP Impurity B is 105462-23-5. It is also known as Risedronate Related Compound A, Risedronate Sodium - Impurity B, Risedronate 2-pyridinyl isomer.

What is the molecular formula and molecular weight of Risedronate EP Impurity B?

Risedronate EP Impurity B has the molecular formula C7H11NO7P2 and a molecular weight of 283.11 g/mol. Its IUPAC name is (1-hydroxy-1-phosphono-2-pyridin-2-ylethyl)phosphonic acid.

What is Risedronate EP Impurity B used for?

Risedronate EP Impurity B is supplied as a characterised reference material related to Risedronate. 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 Risedronate EP Impurity B can I order?

We supply Risedronate EP Impurity 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 Risedronate EP Impurity B?

Yes. Every lot of Risedronate EP Impurity 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 Risedronate EP Impurity B be shipped internationally?

Yes. Risedronate EP Impurity B 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.