Patent ID: 11891349
Assignee: CMBLU ENERGY AG
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  H  Y | IPC C  H

Claim 10:
11. The sulfonated low molecular weight aromatic compound of claim 1, wherein the compound corresponds in structure to Formula (1)(a) or (b) and wherein:
(a) R4 is SO3H;
(b) R4 is SO3H, R3 is methoxy;
(c) R4 is SO3H, R2 and R3 are methoxy;
(d) R1 and R4 are SO3H;
(e) R1 and R4 are SO3H, R3 is methoxy;
(f) R1 and R4 are SO3H, R2 and R3 are methoxy; or
(g) R2 and R4 are SO3H, and R3 is methoxy,
wherein each of the other of R1-R4 is OH or H.