| ≥1 piece |
1.D-Pyroglutamic Acid
2.CAS# 4042-36-8
3.Assay:98.5%
4.Pharm and food use
amino acid
D-Pyr
Product Name: H-D-Pyr-OH CAS#: 4042-36-8
Synonyms: D-Pyroglutamic acid Molecular Formula: C5H7NO3
Molecular Weight: 129
Specification: (Corporation Standard )
| Item | Standard | Analysis data |
| Appearance | White crystals | Conforms |
| Specific rotation[α]D/20 (C=2 in H2O) | +10.8°to +12.3° | +11.68° |
| Melting Point (ºC) | 159 to 161 ºC | 159.5ºC |
| Chloride(C1) | Not more than 0.02% | 0.008% |
| Sulfate(SO4) | Not more than 0.02% | 0.005% |
| Iron(Fe) | Not more than 10ppm | 8ppm |
| Heavy metals(Pb) | Not more than 10ppm | <8ppm |
| Arsenic(As2O3) | Not more than 1ppm | <1ppm |
| Loss on drying | Not more than 0.50% | 0.16% |
| Residue on ignition | Not more than 0.10% | 0.08% |
| Assay | 98.0%101.0% | 99.0% |
| Conclusion | The product conforms to the standard, the method of test consult AJI92 | |
| CAS No.: 4042-36-8 | Other Names: D-Pyroglutamic acid | MF: C5H7NO3 |
| Place of Origin: Sichuan China (Mainland) | Type: Other | Brand Name: Tongsheng |
| Model Number: AJI92 | Purity: >98.5% |