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Sulfadimethoxypyrimidine

Also known as: Sulphamoprine, 2-p-Aminobenzenesulfonamido-4,6-dimethoxypyrimidine, 4-Amino-N-(4,6-dimethoxy-2-pyrimidinyl)benzenesulfonamide, 4-Amino-N-(4,6-dimethoxypyrimidin-2-yl)benzenesulfonamide, 4-Amino-N-(4,6-dimethoxy-pyrimidin-2-yl)benzenesulfonamide, 4-azanyl-N-(4,6-dimethoxypyrimidin-2-yl)benzenesulfonamide, 6-(p-aminobenzenesulphonamido)-2,4-dimethoxypyrimidine, Benzenesulfonamide, 4-amino-N-(4,6-dimethoxy-2-pyrimidinyl)-, ICI 3435, ICI-3435, N-(4,6-Dimethoxy-2-pyrimidinyl)-4-aminobenzenesulfonamide, SDmP, Sulfamoprine, sulfanilsaeure-(4,6-dimethoxy-pyrimidin-2-ylamid), Sulphadimethoxypyrimidine

Sulfadimethoxypyrimidine (CAS 155-91-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H14N4O4S and a molecular weight of 310.329 g/mol. Key properties include a melting point of 200ºC, a boiling point of 570.7±60.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 298.9±32.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
155-91-9
Jingsj CID
J-727-6
Molecular Formula
C12H14N4O4S
Molecular Weight
310.329 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point200ºC
Boiling Point570.7±60.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point298.9±32.9 °C
Exact Mass310.073578
PSA124.81000
LogP1.41
Vapor Pressure0.0±1.6 mmHg at 25°C
Refractive Index1.623

Customs & Trade Information

HS Code2935009090
Summary2935009090 other sulphonamides VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:35.0%

Frequently Asked Questions

What is the CAS number of Sulfadimethoxypyrimidine?

The CAS number of Sulfadimethoxypyrimidine is 155-91-9.

What are the molecular formula and molecular weight of Sulfadimethoxypyrimidine?

Sulfadimethoxypyrimidine has molecular formula C12H14N4O4S and molecular weight 310.329 g/mol.

What are the upstream and downstream products of Sulfadimethoxypyrimidine?

For Sulfadimethoxypyrimidine, Upstream Products: N-Acetylsulfanilyl chloride.

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

Last updated:

How to cite: Jingsj. "Sulfadimethoxypyrimidine (CAS 155-91-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-727-6 (accessed 2026-11-07).

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