Inosine

Drug ingredient

CAS 58-63-9

This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.

US productionNot reported

Import value, 2024$6.4B

Top sourceSingapore 36%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293499 · basket

These shares come from HS customs code 293499, which covers 575 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

SG 36%SingaporeIE 23%IrelandCN 11%ChinaCH 6%SwitzerlandIN 5%India

Finland
Netherlands
Canada
Indonesia
Mexico
Taiwan
South Korea
Austria
Croatia
Sweden
Ukraine
Denmark
Israel
Czech Republic
New Zealand
Hong Kong
Kyrgyzstan
Australia
Portugal
South Africa
Poland
Slovenia
Brazil
Slovakia
Vietnam
Latvia
Malta
Hungary
Romania
Kenya
Belarus
Russia
Turkey
Norway

2 FDA-registered drug labelers

Citra Labs, LLC

Sigma-Aldrich Corporation

Why It Matters

Sectors

Health

Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

•Rejuvesol

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Vendor Pricing

$88.00/gAaron Chemicals LLC

CountryHong Kong

Pack$440.00 / 5 g

Purity95%

Vendors5 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

4 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$101.00	5 g	95%
A2B Chem LLC	United States	$106.60	5 g	95%
AA BLOCKS	United States	$112.60	5 g	95%
Angene International Limited	United States	$32400.00	5 mg	98%

Chemical Identity

CAS58-63-9

PubChem CID135398641

DTXSIDDTXSID2045993

FormulaC10H12N4O5

Mol. Weight268.23 g/mol

SMILESC1=NC2=C(C(=O)N1)N=CN2C3C(C(C(O3)CO)O)O

Data Sources

PubChem · compound 135398641Retrieved 2026-04-07
EPA TSCA InventoryRetrieved 2026-04-24
FDA National Drug Code directoryRetrieved 2026-04-07
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Inosine (CAS 58-63-9) https://chemicalindependence.com/chemical/58-63-9/ PubChem: 135398641. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/135398641 EPA TSCA Inventory: CAS 58-63-9. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 293499 for CAS 58-63-9. Reporting year: 2024. https://usatrade.census.gov/