2,4-Dichloro-5-methyl-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidine CAS 1651890-99-1
| CAS No. | 1651890-99-1 |
| Molecular Formula | C7H7Cl2N3 |
| Molecular Weight | 204.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H7Cl2N3, 2,4-Dichloro-5-methyl-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidine contains a nitrile group, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 204.06 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 2,4-Dichloro-5-methyl-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidine (CAS 1651890-99-1), a certified reference material (molecular formula C7H7Cl2N3, MW 204.06 g/mol) for analytical method development and quality control.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 2,4-Dichloro-5-methyl-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H7Cl2N3 |
| Molecular Weight | 204.06 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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 |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Dichloro Standards
- 2,4-Dichloro-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine (CAS 1000578-08-4)
- 3-(4,5-Dichloro-3-methyl-1h-pyrazol-1-yl)propanenitrile (CAS 1001500-81-7)
- 2,4-Dichloro-5,6,7,8-tetrahydro-pyrido[3,2-d]pyrimidine (CAS 1260669-81-5)
- (S)-2,4-dichloro-6-methyl-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidine (CAS 1417287-56-9)
- 2,4-Dichloro-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidine (CAS 856970-31-5)
- 2,4-Dichloro-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine (CAS 726697-13-8)
- 2,6-Dichloro-N-cyclopropylpyrimidin-4-amine (CAS 270929-28-7)
- 4,6-Dichloro-2-cyclopropylpyrimidin-5-amine (CAS 75438-70-9)
Recommended Standards
- 2-Bromo-4-(tert-butyl)oxazole (CAS 1595737-86-2)
- 2-Bromo-5-(tert-butyl)oxazole (CAS 1713477-20-3)
- 3-Bromo-1-cyclopropylpyrrolidin-2-one (CAS 148776-25-4)
- 3-Bromo-5-(tert-butyl)isoxazole (CAS 1780726-89-7)
- 4-Cyanophenyl trifluoromethanesulfonate (CAS 66107-32-2)
- [1-(dimethylsulfamoyl)-3-(trifluoromethyl)-1H-pyrazol-4-yl]boronic acid (CAS 917900-37-9)
- 1-(3-Chlorobenzyl)-1,2,3,4-tetrahydroquinoxalinedihydrochloride (CAS 939760-06-2)
- 3-Fluoro-5-morpholinobenzoic acid (CAS 295311-40-9)
- 5-Bromo-4-phenyloxazole-2-carbaldehyde (CAS 1240619-13-9)
- 3-(3-Methoxy-4-methylphenyl)-1-methyl-1h-pyrazol-5-amine (CAS 1152666-45-9)
- n-(1-Cyclopropanecarbonylpiperidin-4-ylidene)hydroxylamine (CAS 1000932-71-7)
- 7-Chloro-2-(difluoromethyl)-8-fluoropyrido[4,3-d]pyrimidin-4(3H)-one (CAS 2454491-31-5)
- n-(2-Morpholinoethyl)benzo[d]oxazol-2-amine (CAS 701189-86-8)
- Tau Peptide (74-102) (Exon 3/Insert 2 Domain) trifluoroacetate salt (CAS 1322695-34-0)
Why CATO?
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