4,5-Dihydroxy-2-methylbenzoic acid CAS 127531-40-2
| CAS No. | 127531-40-2 |
| Molecular Formula | C8H8O4 |
| Molecular Weight | 168.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4,5-Dihydroxy-2-methylbenzoic acid.
CATO supplies 4,5-Dihydroxy-2-methylbenzoic acid (CAS 127531-40-2), a certified reference material (molecular formula C8H8O4, MW 168.15 g/mol) for analytical method development and quality control.
Based on its molecular formula C8H8O4, 4,5-Dihydroxy-2-methylbenzoic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 168.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4,5-Dihydroxy-2-methylbenzoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H8O4 |
| Molecular Weight | 168.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
Related Dihydroxy Standards
- 3,4-Dihydroxy-2-methylbenzoic acid (CAS 168899-47-6)
- 2,2-Dihydroxy-1-(4-hydroxyphenyl)ethanone (CAS 197447-05-5)
- 2,3-Dihydroxy-4-methylbenzoic acid (CAS 3929-89-3)
- 2,3-Dihydroxy-5-methoxybenzaldehyde (CAS 73275-94-2)
- 2,3-Dihydroxy-5-methylbenzoic acid (CAS 6049-93-0)
- 2,4-Dihydroxy-3-methoxybenzaldehyde (CAS 58922-29-5)
- 2,4-Dihydroxy-3-methylbenzoic acid (CAS 4707-49-7)
- 2,4-Dihydroxy-5-methoxybenzaldehyde (CAS 51061-83-7)
Recommended Standards
- Methyl 1-methyl-6-oxo-1,6-dihydropyrimidine-5-carboxylate (CAS 1272651-88-3)
- Ethyl 6-oxo-5,6-dihydropyrazine-2-carboxylate (CAS 1286744-23-7)
- 1,2-Dimethyl-6-oxo-1,6-dihydropyrimidine-5-carboxylic acid (CAS 1272507-96-6)
- 5H,6H,8H-Imidazo[2,1-c][1,4]oxazine-2-carboxylic acid (CAS 1286754-72-0)
- 2-chloro-3'-(4-methylpiperazinomethyl) benzophenone (CAS 898788-95-9)
- 3-Chloromethyl-2-fluoro-5-(trifluoromethyl)pyridine (CAS 1227561-85-4)
- 2-Methyl-1-nitroanthracene-9,10-dione (CAS 129-15-7)
- (R)-1-(2,4-dimethoxyphenyl)propan-2-ol (CAS 1432620-28-4)
- 3-(Dimethylamino)-2,2-dimethyl-3-oxopropanoic acid (CAS 65560-35-2)
- N-(3-Hydroxy-4-(hydroxymethyl)cyclopentyl)-2-(2-methoxyphenoxy)acetamide (CAS 1421481-83-5)
- 5-(Difluoromethoxy)isoquinolin-1(2H)-one (CAS 630422-85-4)
- 2-Amino-N-((1-benzylpyrrolidin-3-yl)methyl)-N-cyclopropylacetamide (CAS 1353974-37-4)
- 1-((4-Chloro-1,3-dimethyl-1h-pyrazol-5-yl)methyl)-1h-pyrazol-3-amine (CAS 1492672-29-3)
- D-Ala21-Tirzepatide (CAS CATO-CPTD788913)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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