CompoundList

Methioprim

Also known as 4-amino-2-methylthio-5-pyrimidinemethanol, 5-Pyrimidinemethanol, 4-amino-2-(methylthio)-, (4-Amino-2-methanethiopyrimidin-5-yl)methanol

CAS 588-36-3Formula C6H9N3OSMolar mass 171.23 g/mol
Methioprim chemical structure, C6H9N3OS, CAS 588-36-3
2D chemical structure

Key facts

What buyers check first

CAS number
588-36-3
Formula
C6H9N3OS
Molar mass
171.23 g/mol
HS code
293359
Category
Heterocyclic building blocks

What is Methioprim?

Plain description, key identifiers and synonyms

Methioprim is a chemical substance with the molecular formula C6H9N3OS and a molar mass of 171.23 g/mol. Its CAS registry number is 588-36-3. The IUPAC name is (4-amino-2-methylsulfanylpyrimidin-5-yl)methanol.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(4-amino-2-methylsulfanylpyrimidin-5-yl)methanol
CAS number
588-36-3 CAS number cross-checked
Molecular formula
C6H9N3OS
UNII
6213O32QRM
MDL number
MFCD08236793
InChIKey
XLVOWGDFXAVSFE-UHFFFAOYSA-N
InChI
InChI=1S/C6H9N3OS/c1-11-6-8-2-4(3-10)5(7)9-6/h2,10H,3H2,1H3,(H2,7,8,9)
SMILES (canonical and isomeric)
CSC1=NC=C(C(=N1)N)CO

Synonyms

  • 4-amino-2-methylthio-5-pyrimidinemethanol
  • 5-Pyrimidinemethanol, 4-amino-2-(methylthio)-
  • (4-Amino-2-methanethiopyrimidin-5-yl)methanol
  • 2-Methylthio-4-amino-5-(hydroxymethyl)pyrimidine
  • 2-Methylmercapto-4-amino-5-hydroxymethylpyrimidine
  • 4-Amino-5-hydroxymethyl-2-(methylthio)pyrimidine
  • (4-Amino-2-(methylthio)pyrimidin-5-yl)methanol
  • [4-amino-2-(methylsulfanyl)pyrimidin-5-yl]methanol
  • (4-amino-2-methylsulfanylpyrimidin-5-yl)methanol
  • MAHP
  • [4-amino-2-(methylthio)pyrimidin-5-yl]methanol
  • SQ 15297
  • 3'-Demethyl Papaverine
  • methylmercapto-5-pyrimidinemethanol, NSC 3431, NSC 43811,
  • methanol, 2-Methylmercapto-4-amino-5-hydroxymethylpyrimidine, 4-Amino-2-
  • 4-Amino-2-methylthio-5-pyrimidinemethanol, (4-Amino-2-methanethiopyrimidin-5-yl)
  • (4-Amino-2-methanethiopyrimidin-5-yl) met
  • [4-Amino-2-(methylthio)-5-pyrimidinyl]methanol
  • (4-amino-2-methylsulfanyl-pyrimidin-5-yl)methanol
  • (4-amino-2-methylthiopyrimidin-5-yl)methan-1-ol
  • (4-amino-2-methylsulfanyl-pyrimidin-5-yl)-methanol
  • [4-amino-2-(methylsulfanyl)-5-pyrimidinyl]methanol

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
171.23 g/molcalc.
Exact mass
171.0466 Dacalc.
LogP (octanol/water)
0.27calc.
Topological polar surface area
72.03 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
2calc.
Heavy atoms
11calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.33calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1cncnc1

c1cncnc1

1 ring, 6 atoms, the Pyrimidine ring system.

18,999 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Methioprim suppliers

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Methioprim price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Methioprim is traded under.

HS 2933.59Indicative HS code

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring, other

World exports in 2024
$18.4B
+10.5% vs 2023, imports $24.8B
2019 to 2024
Top exporters
  1. Ireland43.6%
  2. Switzerland * partner reported26.3%
  3. China7.9%
Top importers
  1. Slovenia30.3%
  2. United States30.1%
  3. Germany15.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Methioprim is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Guides for buyers

Practical guides that help when you source, ship or handle Methioprim

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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