Molekula
2-(4-Isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
2-(4-Isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl), better known as imazapyr, is an imidazolinone herbicide used as an active ingredient for broad-spectrum vegetation control, including grasses, broadleaf weeds, brush and woody species on non-crop sites such as forestry land, rights-of-way and industrial areas. This chemical has a CAS number of 81334-34-1, a molecular formula of C13H15N3O3, and a molecular weight of 261.28. It is stored at ambient conditions and carries a signal word of warning for safety handling. Molekula supplies 2-(4-Isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | white to off-white powder |
| Identification | Conforms to reference |
| pH | 2.0 to 4.0 |
| Content | ≥98.0% |
| Heating loss | ≤0.5% |
| NaOH Insoluble Matter | ≤0.1% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White to tan powder |
| Odour | Slight ammonical odor |
| Melting Point | 171 °C |
| Density | 0.34 g/cm³ |
| pKa | pKa = 1.81 |
| log P (octanol/water) | 0.22 |
Source: PubChem CID 54738 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90037540 |
| CAS Number | 81334-34-1 |
| IUPAC Name | 2-(4-methyl-5-oxo-4-propan-2-yl-1H-imidazol-2-yl)pyridine-3-carboxylic acid |
| Molecular Formula | C13H15N3O3 |
| Molecular Weight | 261.28 |
| Exact Mass | 261.1113 |
| SMILES | CC(C)C1(C(=O)NC(=N1)C2=C(C=CC=N2)C(=O)O)C |
| InChIKey | CLQMBPJKHLGMQK-UHFFFAOYSA-N |
| InChI | InChI=1S/C13H15N3O3/c1-7(2)13(3)12(19)15-10(16-13)9-8(11(17)18)5-4-6-14-9/h4-7H,1-3H3,(H,17,18)(H,15,16,19) |
| PubChem CID | 54738 |
| REACH Code | Y110 |
| HTS Code | 29333925 |
| Tariff Code | 2933399999 |
Safety & GHS
-
Health Hazard
GHS07
-
Hazardous to the Environment
GHS09
Hazard statements
- H319 Causes serious eye irritation
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P337+313 If eye irritation persists get medical advice/attention
- P501 Dispose of contents/container to an approved waste disposal plant
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 2-(4-Isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid
- 2-(4-isopropyl-4-methyl-5-oxo-4,5-dihydro-1H-imidazol-2-yl)nicotinic acid
- 2-(4-methyl-5-oxo-4-propan-2-yl-1H-imidazol-2-yl)pyridine-3-carboxylic acid
- AC 243,997
- Arsenal 250A
- Caswell No. 003F
- Charper
- EPA Pesticide Chemical Code 128821
- Imazapyr
- Imazapyr acid
Frequently asked questions
What is 2-(4-Isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl) used for?
This compound is imazapyr, an imidazolinone herbicide that acts by inhibiting acetolactate synthase (ALS), blocking branched-chain amino acid synthesis in plants. It is used as an active ingredient for broad-spectrum control of grasses, broadleaf weeds, brush and trees in forestry, rights-of-way and industrial vegetation management.
What is the chemical formula and molecular weight?
The formula is C₁₃H₁₅N₃O₃, and the molecular weight is 261.28 g/mol.
How should this product be stored?
Store at ambient temperature in a dry, well-ventilated area, away from incompatible substances and moisture.
What grades or purities are available for this compound?
We supply this compound in technical grade (95%+ purity) and analytical standard grade (99%+ purity)—confirm availability for your specific needs.
Can Molekula supply this compound in bulk quantities?
Yes, we offer bulk packaging options (e.g., 5 kg, 25 kg, and larger drums) for industrial-scale applications—contact us for pricing and lead times.
What documentation comes with an order of this product?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.