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Dihydroorotic acid

Also known as: 2,6-Dioxohexahydro-4-pyrimidinecarboxylic acid, 2,6-dioxo-1,3-diazinane-4-carboxylic acid, 4,5-dihydroorotic acid, 5,6-dihydro-orotic acid, DL-dihydroorotic acid, hydroorotic acid, dihydroorotate

Dihydroorotic acid (CAS 155-54-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6N2O4 and a molecular weight of 158.11200 g/mol. Key property: a density of 1.523g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
155-54-4
Jingsj CID
J-1467826-3
Molecular Formula
C5H6N2O4
Molecular Weight
158.11200 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Density1.523g/cm3
Exact Mass158.03300
PSA95.50000
Refractive Index1.519

Customs & Trade Information

HS Code2933599090
Summary2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Dihydroorotic acid?

The CAS number of Dihydroorotic acid is 155-54-4.

What are the molecular formula and molecular weight of Dihydroorotic acid?

Dihydroorotic acid has molecular formula C5H6N2O4 and molecular weight 158.11200 g/mol.

What are the upstream and downstream products of Dihydroorotic acid?

For Dihydroorotic acid, Upstream Products: Orotic acid; Downstream Products: N-Carbamoyl-DL-aspartic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Dihydroorotic acid (CAS 155-54-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1467826-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.