5-(Methylamino)-1,3,4-thiadiazole-2-carboxylic acid CAS 89033-43-2
| CAS No. | 89033-43-2 |
| Molecular Formula | C4H5N3O2S |
| Molecular Weight | 159.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 5-(Methylamino)-1,3,4-thiadiazole-2-carboxylic acid (CAS 89033-43-2), a certified reference material (molecular formula C4H5N3O2S, MW 159.17 g/mol) for analytical method development and quality control.
Structurally, 5-(Methylamino)-1,3,4-thiadiazole-2-carboxylic acid (C4H5N3O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 159.17 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C4H5N3O2S |
| Molecular Weight | 159.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Methylamino Standards
- 4-(Methylamino)-1,2,5-thiadiazole-3-carboxylic acid (CAS 89033-42-1)
- 4-(methylamino)oxane-4-carboxylic acid (CAS 1157932-08-5)
- N-[1-(Methylamino)-2-nitrovinyl]guanidine (CAS 338393-93-4)
- 5-(methylamino)pyrazine-2-carboxylic acid (CAS 1339179-12-2)
- 2-Ethyl-5-(methylamino)-1,2,4-thiadiazol-3(2H)-one (CAS 1365942-39-7)
- 2-[4-(methylamino)oxan-4-yl]ethan-1-ol (CAS 1432679-98-5)
- Ethyl 2-(methylamino)pentanoate (CAS 1497398-47-6)
- Methyl 6-(methylamino)hexanoate (CAS 62222-21-3)
Recommended Standards
- 4-Amino-1,2,5-thiadiazole-3-carbohydrazide (CAS 6972-14-1)
- 5-Amino-1,3,4-thiadiazole-2-carbohydrazide (CAS 98022-46-9)
- 5-Amino-2-thioxodihydropyrimidine-4,6(1H,5H)-dione (CAS 98019-74-0)
- 3-Methyl-6-thioxo-1,3,5-triazinane-2,4-dione (CAS 59045-41-9)
- 3-(4-Chlorophenyl)-6-(2-fluorobenzyl)-3,6-dihydro-7H-[1,2,3]triazolo[4,5-d]pyrimidin-7-one (CAS 893914-27-7)
- Benzenesulfonic acid, (acetylamino)- (CAS 138721-63-8)
- 3-(3-Hydroxybutoxy)butan-1-ol (CAS 65849-81-2)
- 1-(5-Bromo-2,4-dimethoxyphenyl)ethan-1-one (CAS 182056-48-0)
- 5,5-Difluoro-1,3,7,9,10-pentamethyl-2,8-bis((trimethylsilyl)ethynyl)-5H-4l4,5l4-dipyrrolo[1,2-c:2',1'-f][1,3,2]diazaborinine (CAS 1394861-84-7)
- Fenclofenac Ethyl Ester (CAS 86308-84-1)
- 2-(3-Bromobut-3-en-1-yl)phenyl acetate (CAS 890097-76-4)
- 8-Bromo-2-oxo-2H-chromene-3-carboxylic acid (CAS 94032-63-0)
- 8-Bromo-3-(trifluoromethyl)quinoline (CAS 917251-86-6)
- Semaglutide Impurity 155 (x TFA Salt) (CAS CATO-C4X-2226155)
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