methyldopa

Drug ingredient

CAS 555-30-6

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

US productionNot reported

Import value, 2024$652M

Top sourceSingapore 77%

EPA lists this chemical as inactive, meaning no company reported making, importing or processing it in the US from 2006 to 2016.

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 292250 · basket

These shares come from HS customs code 292250, which covers 76 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 77%SingaporeCN 12%ChinaIT 4%ItalyIN 2%IndiaGB 1%United Kingdom

Japan
Germany
Denmark
Taiwan
Spain
Bulgaria
Canada
Serbia
Switzerland
Sweden
South Korea
Netherlands
Hong Kong
Ukraine
Austria
Hungary
Belgium
Ireland
Israel
Finland
Mexico
Slovenia
Czech Republic
United Arab Emirates
Latvia

4 FDA-registered drug labelers

Chartwell RX, LLC

Rising Pharma Holdings, Inc.

Teva API India Limited

Zhejiang Chiral Medicine Chemicals Co., Ltd.

Why It Matters

Sectors

Health

Downstream Uses

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

•Methyldopa

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

$0.56/gAcrotein ChemBio, Inc.

CountryUnited States

Pack$141.16 / 250 g

PurityNot recorded

Vendors8 available

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

7 more vendors

Vendor	Country	$/g	Pack	Purity
AK Scientific, Inc.	United States	$6.24	25 g	98%
Combi-Blocks, Inc.	United States	$90.00	25 g	95%
A2B Chem LLC	United States	$95.08	25 g	95%
AA BLOCKS	United States	$100.36	25 g	95%
Labotest KG	Germany	$217.80	5000 mg	90%
MedKoo Biosciences, Inc	United States	$450.00	1 g	98%
TimTec, LLC	United States	$9333.33	30 mg	90%

Chemical Identity

CAS555-30-6

PubChem CID38853

DTXSIDDTXSID5023295

FormulaC10H13NO4

Mol. Weight211.21 g/mol

SMILESCC(CC1=CC(=C(C=C1)O)O)(C(=O)O)N

Data Sources

PubChem · compound 38853Retrieved 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

← Back to Dashboard ← Back to Health

Brief citations

methyldopa (CAS 555-30-6) https://chemicalindependence.com/chemical/555-30-6/ PubChem: 38853. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/38853 EPA TSCA Inventory: CAS 555-30-6. 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 292250 for CAS 555-30-6. Reporting year: 2024. https://usatrade.census.gov/