L-Histidine hydrochloride CAS 645-35-2
Purity >95%In StockPharmaceutical Standards
| CAS No. | 645-35-2 |
| Molecular Formula | C6H9N3O2 HCl |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
L-Histidine hydrochloride (CAS 645-35-2) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C6H9N3O2 HCl. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C6H9N3O2 HCl |
| Molecular Weight | 191.62 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related L Standards
- HISTIDINE Impurity 2 (CAS 1141479-01-7)
- DL-Histidine-α- (CAS 15474-90-5)
- D-Histidine Methyl Ester (CAS 17720-12-6)
- L-Histidine Methyl Ester Hydrochloride (CAS 18684-16-7)
- HISTIDINE Impurity 6 (CAS 1932060-69-9)
- L-Histidine-13C6,15N3 hydrochloride hydrate (CAS 202468-43-7)
- D-Histidine, 1-[(1,1-dimethylethoxy)carbonyl]-N-[(9H-fluoren-9-ylmethoxy)carbonyl]-, compd. with cyclohexanamine (1:1) (CAS 210755-31-0)
- L-Histidine, 1-methyl-, methyl ester, hydrochloride (1:1) (CAS 256657-21-3)
Recommended Standards
- Ethyl 2-(4-ethoxyphenyl)acetate (CAS 40784-88-1)
- 3-(8-Methyl-4-oxo-3,4-dihydroquinazolin-3-yl)propanoic acid (CAS 877977-21-4)
- 3-(2-Fluorophenyl)-5-methyl-3H-[1,2,3]triazolo[4,5-b]pyridine (CAS 62490-31-7)
- Methyl 4-[4-(2-{[1,1'-biphenyl]-4-yl}-2-oxoethyl)piperazin-1-yl]-3-nitrobenzoate (CAS 478246-55-8)
- 4-(5-Chlorothiophen-2-yl)oxazol-2-amine (CAS 1249507-76-3)
- 4-Propyltetrahydro-2H-pyran-4-ol (CAS 1340577-31-2)
- Peptide YY (3-36) (human) (CAS 123583-37-9)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com