Methylhexahydrophthalic Anhydride CAS 25550-51-0
| CAS No. | 25550-51-0 |
| Molecular Formula | 2*C9H12O3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methylhexahydrophthalic Anhydride (CAS 25550-51-0), molecular formula C9H12O3 and molecular weight 168.19 g/mol, is a CATO reference standard with documented purity and traceability.
Methylhexahydrophthalic Anhydride (C9H12O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Methylhexahydrophthalic Anhydride 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 | 2*C9H12O3 |
| Molecular Weight | 168.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
Related Methylhexahydrophthalic Standards
Recommended Standards
- 5-Phenoxybenzene-1,3-diol (CAS 666180-48-9)
- 8-Bromo-1-(4-methoxybenzyl)-3-methyl-1H-imidazo[4,5-c]quinolin-2(3H)-one (CAS 1802005-98-6)
- 6-methyl-3-(1,2,3,6-tetrahydropyridin-4-yl)-1H-indole (CAS 139774-14-4)
- 2-(1-((2-Hydroxyethyl)thio)-2H-isoindol-2-yl)acetic acid (CAS 70032-89-2)
- 5-bromo-3-methyl-[1,2]oxazolo[5,4-b]pyridine (CAS 58035-51-1)
- Methyl 3-(tert-Butylamino)-2-methylpropanoate (CAS 100792-20-9)
- 2h-Furo[2,3-c]pyran-2-one (CAS 857054-03-6)
- 9-Chloro-2-cyclohexyl-4h-imidazo[4,5,1-ij]quinolin-6(5H)-one (CAS 134601-87-9)
- 3-((2-Ethoxy-4-formyl-6-iodophenoxy)methyl)benzoic acid (CAS 428501-72-8)
- Semaglutide Impurity 183 (CAS 159541-28-3)
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