5,6,7,8-Tetrahydropyrido[4,3-d]pyrimidine-2,4-diamine CAS 39949-17-2
| CAS No. | 39949-17-2 |
| Molecular Formula | C7H11N5 |
| Molecular Weight | 165.20 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 5,6,7,8-Tetrahydropyrido[4,3-d]pyrimidine-2,4-diamine.
5,6,7,8-Tetrahydropyrido[4,3-d]pyrimidine-2,4-diamine (CAS 39949-17-2) is a high-purity analytical reference standard with the molecular formula C7H11N5 and a molecular weight of 165.20 g/mol.
Structurally, 5,6,7,8-Tetrahydropyrido[4,3-d]pyrimidine-2,4-diamine (C7H11N5) contains a nitrile group, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 165.20 g/mol, it falls into the medium-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).
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 | C7H11N5 |
| Molecular Weight | 165.20 g/mol |
| Appearance | Off-white to pale 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 5 |
Related Tetrahydropyrido Standards
- 7-Methyl-5,6,7,8-tetrahydropyrido[4,3-e][1,2,4]triazin-3-amine (CAS 1152506-03-0)
- 3-Methyl-5,6,7,8-tetrahydropyrido[3,4-d]pyridazin-4(3H)-one (CAS 1447958-88-4)
- 2-Methyl-5,6,7,8-tetrahydropyrido[3,4-d]pyridazin-1(2H)-one (CAS 1447962-40-4)
- 6-Methyl-5,6,7,8-tetrahydropyrido[4,3-c]pyridazin-3-ol (CAS 1477618-54-4)
- 3-Methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4(3H)-one (CAS 1510384-26-5)
- 7-Methyl-1,2,3,4-tetrahydropyrido[2,3-d]pyridazin-8(7H)-one (CAS 15370-77-1)
- 6-Methyl-1,2,3,4-tetrahydropyrido[2,3-d]pyridazin-5(6H)-one (CAS 15370-88-4)
- 7-Methyl-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidin-4(3H)-one (CAS 1710195-15-5)
Recommended Standards
- 3-Isopropyl-1H-pyrazolo[5,1-c][1,2,4]triazol-7-amine (CAS 227611-02-1)
- 5-Methyl-2,3-dihydroimidazo[1,2-a]pyrimidine-6,7-diamine (CAS 693208-62-7)
- 3-Amino-5-(ethylamino)-1-methyl-1H-pyrazole-4-carbonitrile (CAS 512845-63-5)
- N-(5,6-Dimethyl-1,2,4-triazin-3-yl)acetimidamide (CAS 61139-99-9)
- Benzyl ((1-((S)-2-aminopropanoyl)pyrrolidin-2-yl)methyl)(methyl)carbamate (CAS 1354029-31-4)
- tert-Butyl ((6-bromo-5-methylpyridin-3-yl)methyl)carbamate (CAS 1355215-24-5)
- 4-(Allyloxy)benzenesulfonamide (CAS 98996-50-0)
- Bedaquiline Fumarate salt (CAS 845533-86-0)
- 2-(3-Allyl-2,4-dioxo-3,4-dihydrothieno[3,2-d]pyrimidin-1(2H)-yl)acetic acid (CAS 1239736-20-9)
- 1-(4-Methyl-6-(pyrrolidin-1-yl)pyridin-3-yl)propan-1-ol (CAS 1355178-44-7)
- Pigment Red 176 (CAS 12225-06-8)
- methyl 2-[(2-chloroacetyl)amino]-3,3,3-trifluoro-2-hydroxypropanoate (CAS 327101-05-3)
- 3-[(2-Chlorophenyl)methanesulfonyl]-5-methyl-1,2-thiazole-4-carbonitrile (CAS 339021-04-4)
- Cyclolinopeptide B (CAS 193139-41-2)
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