7-Chloro-2-(4-chlorophenyl)-5-phenylpyrazolo[1,5-a]pyrimidine CAS 889939-44-0
| CAS No. | 889939-44-0 |
| Molecular Formula | C18H11Cl2N3 |
| Molecular Weight | 340.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C18H11Cl2N3, 7-Chloro-2-(4-chlorophenyl)-5-phenylpyrazolo[1,5-a]pyrimidine contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 340.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
7-Chloro-2-(4-chlorophenyl)-5-phenylpyrazolo[1,5-a]pyrimidine (CAS 889939-44-0), molecular formula C18H11Cl2N3 and molecular weight 340.21 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 7-Chloro-2-(4-chlorophenyl)-5-phenylpyrazolo[1,5-a]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 | C18H11Cl2N3 |
| Molecular Weight | 340.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- 4-Chloro-7-(3-chlorophenyl)-5-phenyl-7H-pyrrolo[2,3-d]pyrimidine (CAS 890091-44-8)
- 4-Chloro-7-(4-chlorophenyl)-5-phenyl-7H-pyrrolo[2,3-d]pyrimidine (CAS 507273-41-8)
- 3-Chloro-4-((4-chlorobenzyl)oxy)-5-ethoxybenzamide (CAS 1706463-65-1)
- 2-chloro-N-[5-chloro-2-(4-ethoxyphenoxy)phenyl]acetamide (CAS 930395-63-4)
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- 4-Chloro-3-((4-chlorophenyl)sulfonyl)-2-methyl-1H-indole (CAS 646514-81-0)
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- N-(5-Chloro-2-methylphenyl)-3-(4-chloro-3,5-dimethyl-1H-pyrazol-1-yl)butanamide (CAS 890597-20-3)
Recommended Standards
- Methyl 5-bromo-3-(N-ethylcyclopropanecarboxamido)-2-methylbenzoate (CAS 2238821-78-6)
- N-((1,4-Dioxaspiro[4.4]nonan-2-yl)methyl)-3-bromobenzamide (CAS 899958-42-0)
- 3-(4-Bromophenyl)-4-(4-methylbenzoyl)-1H-pyrrole (CAS 478031-39-9)
- N-(2-bromophenyl)-2-((4-fluorophenyl)thio)acetamide (CAS 328287-37-2)
- 2,2-Difluoro-1-(3-fluoro-5-methylphenyl)ethan-1-one (CAS 1352215-18-9)
- (R,E)-3,7-Dimethyloct-2-enedioic acid (CAS 87172-91-6)
- Yttrium(III) acetate tetrahydrate (CAS 85949-60-6)
- Methyl 2-ethynyl-4-methylbenzoate (CAS 2113642-19-4)
- (1R,5R)-3-Methyl-3,6-diazabicyclo[3.2.0]heptane dihydrochloride (CAS 2227198-02-7)
- 35746-21-5 (E)-Tetradec-11-enal 11-Tetradecenal, (E)- 11-Tetradecenal, (11E)- AI3-35931 EINECS 252-710-7 (E)-11-Tetradecenal (CAS 35746-21-5)
- 2-bromo-3-methyl-N-(quinolin-5-yl)butanamide (CAS 1016881-60-9)
- Bis(3,4-dimethoxybenzyl)amine (CAS 5634-21-9)
- 1-(Naphthalen-2-yl)pentan-1-one (CAS 33489-63-3)
- Semaglutide Impurity 137 (x TFA Salt) (CAS CATO-C4X-2226137)
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