Process for the purification of riboflavin
US7670800B2 · kind B2 · utility
0Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2004 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Apr 3, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D475/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for the purification of riboflavin comprising the steps of (a) precipitating a first crystalline form of riboflavin, (b) isolating the first crystalline form of riboflavin, (c) transforming the first crystalline form of riboflavin into a second crystalline form of riboflavin under conditions that decompose diluted DNA, and (d) isolating the second crystalline form of riboflavin, provided that at ambient temperature the first crystalline form of riboflavin is thermodynamically less stable than the second crystalline form of riboflavin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.