1H-Pyrrolo[2,3-d]pyridazine CAS 271-35-2
| CAS No. | 271-35-2 |
| Molecular Formula | C6H5N3 |
| Molecular Weight | 119.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1H-Pyrrolo[2,3-d]pyridazine (CAS 271-35-2), molecular formula C6H5N3 and molecular weight 119.12 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1H-Pyrrolo[2,3-d]pyridazine (C6H5N3) contains a nitrile group, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 119.12 g/mol, it falls into the low-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C6H5N3 |
| Molecular Weight | 119.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 3 |
Related H Standards
- 4H-Pyrrolo[3,4-d]pyrimidine (CAS 14458-74-3)
- 1H-Pyrrolo[3,4-d]pyrimidine (CAS 14529-49-8)
- 7H-Pyrrolo[2,3-c]pyridazine (CAS 16767-40-1)
- 1H-Pyrrolo[2,3-b]pyrazine (CAS 42430-74-0)
- 1H-Pyrrolo[3,2-d]pyrimidine (CAS 452-20-0)
- 2H-Pyrrolo[2,3-d]pyrimidine (CAS 326-98-7)
- 4H-Pyrrolo[2,3-d]pyrimidine (CAS 271-68-1)
- 4H-Pyrrolo[3,2-d]pyrimidine (CAS 399-61-1)
Recommended Standards
- 1,2,3-Propanetricarbonitrile (CAS 62872-44-0)
- 2-((2-Hydroxyethyl)amino)acetic acid (CAS 5835-28-9)
- [1,2,4]Triazolo[4,3-a]pyridine (CAS 274-80-6)
- 2-(Aminooxy)butanoic acid (CAS 4385-95-9)
- 1114597-89-5 4-Amino-2-methyl-3,4-dihydro-1lambda~6~-thieno[2,3-e][1,2]thiazine-1,1(2H)-dione DTXSID90649240 (CAS 1114597-89-5)
- 3-(Difluoromethyl)-4-(3-methoxypropoxy)aniline (CAS 1341378-49-1)
- n-((4,5,6,7-Tetrahydrobenzo[d]thiazol-2-yl)methyl)cyclopropanamine (CAS 1211510-95-0)
- (4-Methoxyphenethyl)hydrazine hydrochloride (CAS 69717-81-3)
- (R)-BOc-3-benzyl-piperidine-3-carboxylic acid dcha (CAS 1354752-73-0)
- Tryptophan Impurity 15 (CAS CATO-C4X-137315)
- 2-Fluoro-N-((4-methylthiazol-5-yl)methyl)aniline (CAS 1464955-42-7)
- 3-Cyano-2-methyl-2H-indazole (CAS 31748-45-5)
- 6-Heptyl-4-hydroxy-2H-pyran-2-one (CAS 90632-45-4)
- Semaglutide impurity 59 (CAS CATO-C4X-222659)
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