5-(Pyridin-4-yl)pyrimidine-2,4-diamine CAS 103851-71-4
| CAS No. | 103851-71-4 |
| Molecular Formula | C9H9N5 |
| Molecular Weight | 187.20 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 5-(Pyridin-4-yl)pyrimidine-2,4-diamine.
5-(Pyridin-4-yl)pyrimidine-2,4-diamine (CAS 103851-71-4) is a high-purity analytical reference standard with the molecular formula C9H9N5 and a molecular weight of 187.20 g/mol.
Structurally, 5-(Pyridin-4-yl)pyrimidine-2,4-diamine (C9H9N5) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 187.20 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C9H9N5 |
| Molecular Weight | 187.20 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 5 |
Related Pyridin Standards
- 6-(Pyridin-4-yloxy)pyridin-3-amine (CAS 1093952-87-4)
- 3-Methyl-1-(pyridin-2-yl)-1H-pyrazole-4-carbaldehyde (CAS 1152502-73-2)
- 1-methyl-3-(pyridin-3-yl)-1H-pyrazole-4-carbaldehyde (CAS 1152508-25-2)
- 1-Methyl-3-(pyridin-4-yl)-1H-pyrazole-4-carbaldehyde, 97% (CAS 1152546-66-1)
- 1-Methyl-3-(pyridin-2-yl)-1h-pyrazole-4-carbaldehyde (CAS 1152546-72-9)
- 3-Methyl-1-(pyridin-4-yl)-1H-pyrazole-4-carbaldehyde (CAS 1153043-06-1)
- 4-Methyl-6-(pyridin-3-yl)-1,3,5-triazin-2-amine (CAS 119294-49-4)
- [2-(Pyridin-2-yl)pyrimidin-4-yl]methanol (CAS 1466891-08-6)
Recommended Standards
- 1-[4-(4h-1,2,4-triazol-4-yl)phenyl]ethan-1-one (CAS 1030702-48-7)
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- 1-(Quinazolin-2-yl)guanidine (CAS 102331-12-4)
- 4-(2-Pyrimidinyloxy)aniline (CAS 105130-26-5)
- 1,3-diethyl 2-(methoxymethyl)-2-methylpropanedioate (CAS 21398-92-5)
- rel-(2R,3R)-5-Bromo-2-(4-methoxyphenyl)-3-methyl-2,3-dihydrobenzofuran (CAS 2477608-77-6)
- (2-Ethoxy-5-fluorophenyl)methanamine (CAS 1096343-30-4)
- N-([1,1'-Biphenyl]-2-yl)-5-methylisoxazole-4-carboxamide (CAS 61643-39-8)
- 3-(Cyclopentylmethyl)azetidine (CAS 1251274-30-2)
- 2-Amino-4-(1h-indazol-1-yl)butanamide (CAS 1310085-01-8)
- 2-(3-(tert-Butyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 627526-15-2)
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- Pancreatic Polypeptide (1-17)-(Ala31,Aib32)-Neuropeptide Y (18-36) (human) trifluoroacetate salt (CAS 313988-70-4)
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