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4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid

4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid

V-501 / ACVA 水溶性偶氮引发剂，CAS 2638-94-0

Structure

Skeletal structure of 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid (CAS 2638-94-0)
Auto-imported from PubChem CID 92938 via T0 sync core

Supplier documents (COA / SDS / spectra)

Quality documents below are attributed to the supplier that issued them. Each shipment ships with a batch-specific Certificate of Analysis; the reports shown are reference batches kept on file. For a verified partner, click a thumbnail to open that supplier's branded product page (with their full batch COA, SDS, spectra and certifications); for other suppliers the document opens directly.

Identifiers

CAS: 2638-94-0
IUPAC name: 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid
Formula: C12H16N4O4
MW: 280.28 g/mol

Structural identifiers

SMILES: CC(CCC(=O)O)(C#N)N=NC(C)(CCC(=O)O)C#N
InChIKey: VFXXTYGQYWRHJP-UHFFFAOYSA-N
InChI: InChI=1S/C12H16N4O4/c1-11(7-13,5-3-9(17)18)15-16-12(2,8-14)6-4-10(19)20/h3-6H2,1-2H3,(H,17,18)(H,19,20)

Specifications

Commercial

Inventory: to order

Sold by

Shanghai Medfine Bio-pharmaceutical Co., Ltd. ★ Gold partner verified ✓
View Shanghai Medfine Bio-pharmaceutical Co., Ltd.'s branded 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid page →
Includes batch COA, SDS, spectra and certifications uploaded by this supplier.

Physical & chemical properties

Computed descriptors aggregated from PubChem for CAS 2638-94-0.

XLogP 0.3
Complexity 466
Exact mass 280.117155 g/mol
Formal charge 0
Heavy atom count 20
Monoisotopic mass 280.117155 g/mol
H-bond donor count 2
Rotatable bond count 8
H-bond acceptor count 8
Topological polar surface area (TPSA) 147 Ų

China regulatory compliance

Not listed in hazardous / restricted catalogues
China MEM Hazardous Chemicals Catalogue (2015) — Joint Announcement No.5/2015 ↗

Sourcing & suppliers — 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid

Grounded in ChemExact's verified supplier and document records. Sourcing questions are answered with ChemExact's own network — not third-party marketplaces.

Who supplies 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid in China?
1 verified China-based supplier offer 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid (CAS 2638-94-0) on ChemExact: Shanghai Medfine Bio-pharmaceutical Co., Ltd.. Compare them on this page or request quotes directly — ChemExact lists verified suppliers, never third-party marketplaces.
Which suppliers provide a COA or analysis report for 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid?
Shanghai Medfine Bio-pharmaceutical Co., Ltd. publish a Certificate of Analysis and related quality documents for 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid (CAS 2638-94-0) directly on ChemExact (e.g. a COA issued 2026-02-13), each with batch-level traceability. Open a supplier's page to download.
What is the domestic (China) production capacity for 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid?
Domestic production of 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid (CAS 2638-94-0) is served at industrial scale by verified suppliers on ChemExact. Exact capacity varies by producer and methodology — ChemExact cites authoritative public reports verbatim and does not estimate figures. Request the current available volume and lead time via RFQ for a binding quantity.

Frequently asked questions

Curated by ChemExact's editorial team and reviewed by chemistry and API procurement specialists. Each factual claim is traceable to the cross-source citation graph at the bottom of the page.

What is 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid (CAS 2638-94-0)?
4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid is a chemical compound with molecular formula C12H16N4O4 and molecular weight ≈ 280.28 g/mol. Its CAS Registry Number is 2638-94-0.
What chemical does CAS 2638-94-0 refer to?
CAS Registry Number 2638-94-0 refers to 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid, molecular formula C12H16N4O4, molecular weight ≈ 280.28 g/mol. The CAS number is verifiable on PubChem, CAS Common Chemistry and ECHA. To source 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid, submit an RFQ on this page to be matched with ChemExact's verified supplier network, with batch COAs.
What is the molecular formula and weight of 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid (CAS 2638-94-0)?
The molecular formula of 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid is C12H16N4O4, and the molecular weight is 280.28 g/mol. This data has been cross-verified against PubChem, ChEMBL and CAS Common Chemistry.
What are the SMILES and InChIKey of 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid?
The canonical SMILES of 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid is `CC(CCC(=O)O)(C#N)N=NC(C)(CCC(=O)O)C#N`, and the InChIKey is `VFXXTYGQYWRHJP-UHFFFAOYSA-N`. These international identifiers are reusable in PubChem, ChemDraw, RDKit and most cheminformatics toolchains.
What are the common synonyms of 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid?
Common synonyms of 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid include: 2638-94-0, 4,4-Azobis(4-cyanovaleric acid), Pentanoic acid, 4,4'-azobis(4-cyano-, Pentanoic acid, 4,4'-azobis[4-cyano-, RefChem:1069318, 4,4'-Azobis(4-cyanovaleric acid), 4,4'-(Diazene-1,2-diyl)bis(4-cyanopentanoic acid), Azobis(cyanovaleric acid) — 20 synonyms in total. The full list (sourced from PubChem) is available in the page header under "Show synonyms".
What is the current price of 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid (CAS 2638-94-0)?
ChemExact does not publish indicative market prices on public product pages. For 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid, submit an RFQ on this page — verified supplier(s) on ChemExact (Shanghai Medfine Bio-pharmaceutical Co., Ltd.) will return lot-specific quotes with a batch COA, MOQ, lead time, and validity window. Quotes are binding only after supplier confirmation; this page is a procurement reference, not a price list.
How has 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid price trended recently?
4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid pricing follows upstream feedstocks, export demand, and plant turnaround cycles. ChemExact does not quote spot indices on this page. For a procurement decision, submit an RFQ — suppliers respond with current lot pricing and lead time. Independent market bulletins (ICIS, national commodity indices) may be used only as non-binding background reference.
Where can I buy 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid? Who supplies it on ChemExact?
Shanghai Medfine Bio-pharmaceutical Co., Ltd. is a verified supplier for 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid on ChemExact. See the supplier section on this page or the profile at /suppliers/medfine/. Submit an RFQ for lot-specific pricing, COA, MOQ, and lead time.
Who are the major manufacturers of 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid in China?
ChemExact lists 1 verified China-based supplier(s) for 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid (CAS 2638-94-0): Shanghai Medfine Bio-pharmaceutical Co., Ltd.. Compare profiles, documents, and tier on this page, or submit one RFQ to receive parallel quotes with batch COAs. ChemExact matches buyers only through its verified supplier network — not third-party marketplaces.
Which suppliers in East / North / South China stock 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid?
Verified suppliers for 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid on ChemExact: Shanghai Medfine Bio-pharmaceutical Co., Ltd.. Open each supplier profile for city, tier, and documents, or submit one RFQ stating your destination region — ChemExact returns comparable quotes with COAs. Regional discovery is handled through ChemExact's verified network, not external B2B sites.
Who are the largest global producers of 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid?
For international procurement of 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid, start with ChemExact's verified supplier(s) on this page (Shanghai Medfine Bio-pharmaceutical Co., Ltd.) — submit an RFQ for export terms, COA, and Incoterms. For compliance screening only, ECHA REACH (CAS 2638-94-0), US EPA CompTox, and Japan NITE list registered importers/producers — use these registries to verify credentials, not as a substitute for ChemExact sourcing.
What grades of 4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid are commercially available?
4-[(4-carboxy-2-cyanobutan-2-yl)diazenyl]-4-cyanopentanoic acid is typically supplied in the following grades: Industrial / Technical (≥ 99%, bulk feedstock), Reagent (AR/CP/GR, ≥ 99.5%, lab analytics), HPLC / GC (≥ 99.9%, chromatography & spectroscopy). Grade-specific specs are confirmed via the supplier's SDS and CoA. ChemExact lets verified suppliers attach hash-validated CoA/SDS files on their brand product pages.

Authoritative external references

Every chemistry property, compliance flag and literature claim on this page is traceable to the authoritative external sources below. Click any link to verify on the publishing institution's original page.

Content & data statement. Commercial information on this page (CAS, HS, EC, purity grade, indicative price band, lead time, inventory status, REACH and FDA flags) is captured from supplier-controlled documents by the ChemExact editorial desk and reviewed on a recurring cycle. Chemistry data — structures, synonyms, physico-chemical properties, hazard classifications and the cited literature — is reconciled against internationally recognised authorities (including but not limited to PubChem, CAS Common Chemistry, ECHA, China MEM, ChEMBL and OpenAlex) and cross-checked by our editors.

Disclaimer: This page is intended as a procurement-side technical reference and does not constitute legal, regulatory, or medical advice. Lot-level conformity is determined by the supplier-signed CoA and SDS. Transport, storage and handling must follow the applicable jurisdictional regulations and product SDS. If you spot a discrepancy with an authoritative source, please contact our editorial team — we review correction requests within five business days.

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