| Color | Undesignated |
| Formula Weight | 180.16 |
| Physical Form | Crystal-Powder at 20°C |
| Chemical Name or Material | 4-Hydroxyphenylpyruvic Acid |
| 979 |
Synonym: 4-hydroxyphenylpyruvic acid, testacid, 3-4-hydroxyphenyl-2-oxopropanoic acid, p-hydroxyphenylpyruvic acid, testacide, 4-hydroxyphenylpyruvate, 3-4-hydroxyphenyl pyruvic acid, p-hydroxyphenyl pyruvic acid, 3-p-hydroxyphenyl pyruvic acid, 3-p-hydroxyphenyl-2-oxopropanoic acid
