Allopurinol - Impurity A

Name: Allopurinol - Impurity A
Brand: Zemixal
SKU: ZX-036425

Reference StandardAvailable on request

Order Allopurinol - Impurity A (CAS 27511-79-1) online at Zemixal: C8H14N8O6S, COA and SDS with every lot, worldwide shipping.

Pack sizes

Allopurinol - Impurity A chemical structure

CAS number27511-79-1

FormulaC₈H₁₄N₈O₆S

Molar mass350.32 g/mol

Physical formSolid

HS code38229090

InChIKeyUMPKASYMNORSRO-UHFFFAOYSA-N

IUPAC namebis(5-amino-1H-pyrazole-4-carboxamide);sulfuric acid

About Allopurinol - Impurity A

Analytical teams working on Allopurinol use Allopurinol - Impurity A as a qualified comparison standard. Identity at a glance (Reference Standard): CAS 27511-79-1, formula C8H14N8O6S and molar mass 350.32 g/mol. It is handled as a solid.

Typical applications

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

Handling and storage

Classified under GHS with signal word Warning and hazard statements H302+H312+H332, H302, H315 and H317. Read the SDS before first use.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. You receive a certificate of analysis with characterisation data with each order. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Allopurinol

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

Allopurinol 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 Allopurinol - Impurity A
Product name	Allopurinol - Impurity A
Catalogue number	ZX-036425
CAS number	27511-79-1
IUPAC name	bis(5-amino-1H-pyrazole-4-carboxamide);sulfuric acid
Molecular formula	C₈H₁₄N₈O₆S
Molar mass	350.32 g/mol
Exact mass	350.0757
Grade	Reference Standard
Physical form	Solid
H-bond donors / acceptors	8 / 10
Topological polar surface area	279 Å²
HS code	38229090
InChIKey	UMPKASYMNORSRO-UHFFFAOYSA-N
SMILES	C1=NNC(=C1C(=O)N)N.C1=NNC(=C1C(=O)N)N.OS(=O)(=O)O
PubChem CID	2723907
Synonyms	Allopurinol EP Impurity A, 1H-Pyrazole-4-carboxamide, 3-amino-, sulfate (2:1), 5-Aminopyrazole-4-carboxamide hemisulphate, 3-Amino-4-carboxamidopyrazole hemisulfate, 3-Amino-4-pyrazolecarboxamide hemisulfate, 3-Amino-1H-pyrazole-4-carboxamide sulfate(2:1), 3-Amino-1H-pyrazole-4-carboxamide Hemisulfate, 3-Amino-4-carbamoylpyrazole Hemisulfate, 3-Amino-4-pyrazolecarboxamide hemisulfate salt, 3-Aminopyrazole-4-carboxamide Hemisulfate, 5-Amino-1H-pyrazole-4-carboxamide Hemisulphate, 5-amino-1H-pyrazole-4-carboxamide hemisulfate

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

Hazardous to the environment

Signal word Warning

H302+H312+H332Harmful if swallowed, in contact with skin or if inhaled
H302Harmful if swallowed
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H335May cause respiratory irritation
H411Toxic to aquatic life with long lasting effects

Precautionary statements P261, P264, P264 + P265, P270, P271, P272, P273, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P317, P319, P321, P330, P332 + P317, P333 + P317, P337 + P317, P362 + P364, P391, P403 + P233, P405, 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 Allopurinol - Impurity A
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 Allopurinol - Impurity A

Which CAS number identifies Allopurinol - Impurity A?

Allopurinol - Impurity A is registered under CAS 27511-79-1. You may also see it listed as Allopurinol EP Impurity A, 1H-Pyrazole-4-carboxamide, 3-amino-, sulfate (2:1), 5-Aminopyrazole-4-carboxamide hemisulphate. Our catalogue number for this item is ZX-036425.

What are the formula and molar mass of Allopurinol - Impurity A?

For Allopurinol - Impurity A, its formula is C8H14N8O6S and its molar mass is 350.32 g/mol. InChIKey UMPKASYMNORSRO-UHFFFAOYSA-N lets you match it in any structure database.

How is Allopurinol - Impurity A used in pharmaceutical QC?

Allopurinol - Impurity A is a characterised reference material linked to Allopurinol. 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 Allopurinol - Impurity A?

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 Allopurinol - Impurity A?

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 Allopurinol - Impurity A to my country?

Yes. Because Allopurinol - Impurity A 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.

More Allopurinol standards

Have a list of compounds to price?

Paste up to 200 CAS numbers into Bulk CAS lookup, or send one enquiry for everything in your quote list. We reply with price, lead time and documents.

Bulk CAS lookup Open quote list