3-Chlorobenzo[4,5]imidazo[1,2-a]pyrimidine-2-carboxylic acid CAS 1956331-37-5
| CAS No. | 1956331-37-5 |
| Molecular Formula | C11H6ClN3O2 |
| Molecular Weight | 247.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Chlorobenzo[4,5]imidazo[1,2-a]pyrimidine-2-carboxylic acid.
3-Chlorobenzo[4,5]imidazo[1,2-a]pyrimidine-2-carboxylic acid (CAS 1956331-37-5) is a high-purity analytical reference standard with the molecular formula C11H6ClN3O2 and a molecular weight of 247.64 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 3-Chlorobenzo[4,5]imidazo[1,2-a]pyrimidine-2-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 247.64 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C11H6ClN3O2 |
| Molecular Weight | 247.64 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chlorobenzo Standards
- 5-Chlorobenzo[b]thiophene-2-sulfonamide (CAS 1158784-11-2)
- 6-Chlorobenzo[b]thiophene-2-sulfonic acid (CAS 1427527-63-6)
- 5-Chlorobenzo[c][1,2,5]thiadiazole-4-sulfonamide (CAS 113950-69-9)
- 4-Chlorobenzo[d]oxazol-2-ol (CAS 13603-93-5)
- 3-(5-Chlorobenzo[d]oxazol-2-yl)aniline (CAS 293737-77-6)
- 4-(5-Chlorobenzo[d]oxazol-2-yl)aniline (CAS 293737-78-7)
- 3-(7-Chlorobenzo[d][1,3]dioxol-5-yl)-3-hydroxypropanoic acid (CAS 1248479-36-8)
- 1-(5-Chlorobenzo[d]oxazol-2-yl)piperidin-4-one (CAS 1206969-50-7)
Recommended Standards
- 3-(4-Chlorophenyl)isoxazolo[5,4-d]pyrimidin-4(5H)-one (CAS 15783-73-0)
- 1-(2-Chlorophenyl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile (CAS 75838-07-2)
- 4-(1H-1,2,3-benzotriazol-1-yl)-6-chloro-1,3,5-triazin-2-amine (CAS 1531560-72-1)
- 1-(4-Chlorophenyl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile (CAS 75837-75-1)
- (5-(((Benzyloxy)carbonyl)amino)-2,3,4-trihydroxycyclohexyl)carbamate (CAS 6216-32-6)
- 1-Morpholinopentane-1,4-dione (CAS 27152-25-6)
- (S)-Tert-butyl (3-Methylpiperidin-3-yl)carbamate (CAS 1363378-21-5)
- 2-Allylbenzenesulfonamide (CAS 291514-04-0)
- Melatonin 2-Chloro impurity (CAS 118747-02-7)
- 7-Chloro-5-[(2,6-dichlorophenyl)methyl]-2,3,4,5-tetrahydro-1,5-benzothiazepin-4-one (CAS 303987-48-6)
- 4-methyloxazol-5-ol (CAS 43022-91-9)
- 6-chloro-7-fluoro-4-oxo-chromene-2-carboxylic acid (CAS 865451-02-1)
- Bimatoprost Impurity 19 (CAS 41639-71-8)
- Calcineurin Autoinhibitory Peptide (CAS 148067-21-4)
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