(E)-Penta-2,4-dienoic acid CAS 21651-12-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 21651-12-7 |
| Molecular Formula | C5H6O2 |
| Molecular Weight | 98.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Order (E)-Penta-2,4-dienoic acid (CAS 21651-12-7) pharmaceutical standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C5H6O2. Molecular weight: 98.10 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C5H6O2 |
| Molecular Weight | 98.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1963 |
Related E Standards
- (Z)-Penta-2,4-dienoic acid (CAS 29739-67-1)
- Penta-2,3-dienoic acid (CAS 64788-20-1)
- Penta-3,4-dienoic acid (CAS 60053-24-9)
- Penta-2,4-dien-1-ol (CAS 4949-20-6)
- Methyl penta-2,4-dienoate (CAS 1515-75-9)
- Penta-1,4-dien-3-one (CAS 1890-28-4)
- (E)-Penta-2,4-dienal (CAS 20432-40-0)
- (Z)-Penta-2,4-dienal (CAS 37918-47-1)
Recommended Standards
- (4R)-4-hydroxycyclopent-2-en-1-one (CAS 59995-47-0)
- (S)-4-Hydroxycyclopent-2-enone (CAS 59995-49-2)
- (1S,5R)-3-Oxabicyclo[3.1.0]hexan-2-one (CAS 75658-86-5)
- Protogracillin (CAS 54848-30-5)
- 1-(2-Bromo-4-iodophenyl)urea (CAS 1424568-36-4)
- (2-Bromothiazol-5-yl)(piperidin-1-yl)methanone (CAS 1290136-85-4)
- Pyrazine-2,5-diol (CAS 134434-28-9)
- 4,6-Dichloro-1-nitroanthracene-9,10-dione (CAS 60506-83-4)
- 1-(2,4-Dichloro-5-isopropoxyphenyl)-5-phenyl-1H-tetrazole (CAS 338961-43-6)
- Semaglutide impurity 64 (CAS CATO-C4X-222664)
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