2-Acetamido-3-(4-acetoxy-3,5-diiodophenyl)propanoic Acid
- CAS153324-21-1
- CatalogueRS-P018329
- FormulaC13H13I2NO5
- MW517.05
On this page
Product identification
| Product name | 2-Acetamido-3-(4-acetoxy-3,5-diiodophenyl)propanoic Acid |
|---|---|
| Catalogue No. | RS-P018329 |
| CAS No. | 153324-21-1 |
| Molecular formula | C13H13I2NO5 |
| Molecular weight | 517.05 |
| Availability | In stock— dispatched in about 1–2 weeks |
| Standard type | Pharmaceutical Intermediates |
| Drug substance | Levothyroxine |
| Also known as | Levothyroxine Related Compound; N,O-Diacetyl Diiodotyrosine (USP) |
| Storage | 2-8°C Refrigerator |
| Intended use | For laboratory and research use only. Not for human or veterinary use. |
What is stated on the certificate
Content and purity are assigned per lot and stated on the certificate of analysis issued for the batch you receive — they are not a catalogue-level figure. The certificate records the tests performed, the specification applied and the result obtained for that lot.
| Field | Basis |
|---|---|
| Identity | Spectroscopic and chromatographic methods appropriate to the material |
| Purity | Chromatographic purity, area normalisation unless stated otherwise |
| Assay / content | Mass balance, corrected for the stated volatiles and residue |
| Catalogue and batch numbers | RS-P018329 / batch number on the certificate |
| Retest date | Printed on the certificate for the lot supplied |
Frequently asked
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Is the assigned value given on an “as is” basis?
How should this material be stored?
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Finding this standard
Buyers reach this compound by CAS number, by catalogue number, through the drug substance it belongs to, or through the type of standard it is. Those routes all start here:
- Other impurities of Levothyroxine
- Pharmaceutical Intermediates of this kind
- Documents for this item (COA, SDS)
- Certificate of analysis for RS-P018329
- Request a quotation for RS-P018329
Searching another way? Send the structure, a SMILES string or the pharmacopoeial name — a CAS number is not required for a non-compendial impurity. Write to sales@rssechem.com.
Other standards of Levothyroxine
All 71 further standards are listed here — every link is in the page, not loaded later.
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Levothyroxine sulfate
BACK ORDERRS-Z004494 -
Levothyroxine EP Impurity B
IN STOCKRS-L022007 -
Levothyroxine EP Impurity D
IN STOCKRS-L022019 -
Levothyroxine EP Impurity E
IN STOCKRS-L022001 -
Levothyroxine EP Impurity F
IN STOCKRS-L022022 -
Levothyroxine EP Impurity H
IN STOCKRS-L022010 -
Levothyroxine EP Impurity I
BACK ORDERRS-L022009 -
Levothyroxine EP Impurity K (R-Isomer)
CUSTOM SYNTHESISRS-L022018 -
Levothyroxine USP Impurity b
IN STOCKRS-L022011 -
Levothyroxine USP Impurity e
IN STOCKRS-L022012 -
Liothyronine Impurity 3 (Liothyronine EP Impurity C)
IN STOCKRS-L022017 -
(S)-2-Acetamido-3-(4-hydroxy-3,5-dinitrophenyl)propanoic Acid
IN STOCKRS-P002281 -
(S)-2-Amino-3-(3,5-dichloro-4-hydroxyphenyl)propanoic Acid
CUSTOM SYNTHESISRS-S1137011 -
(S)-2-Amino-3-(4-(3,5-diiodo-4-methoxyphenoxy)-3,5-diiodophenyl)propanoic Acid
BACK ORDERRS-Z412QSO -
(S)-2-amino-3-(4-(3-bromo-4-hydroxyphenoxy)-3,5-diiodophenyl)propanoic acid
BACK ORDERRS-U079746 -
(S)-2-Amino-3-(4-(4-hydroxy-3-iodo-5-nitrophenoxy)-3,5-diiodophenyl)propanoic Acid
BACK ORDERRS-P002067 -
2,6-Diiodobenzene-1,4-diol
IN STOCKRS-U004353 -
2,6-Diiodophenol
CUSTOM SYNTHESISRS-P006887 -
2-hydroxy-2-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)acetamide
BACK ORDERRS-I007083 -
2-Tert-butyl-6-(2-hydroxy-tert-butyl)-4-methylene-2,5-cyclohexadien-1-one
CUSTOM SYNTHESISRS-U083077 -
3,3',5-Triiodo-L-thyronine-13C6
BACK ORDERRS-I118068 -
3,3’,5,5’-Tetraiodothyronamine Hydrochloride
CUSTOM SYNTHESISRS-I013158 -
3,3’,5’-Triiodo-L-thyronine
IN STOCKRS-L022006 -
3,5-Diiodo Thyroaldehyde Methyl Ether
BACK ORDERRS-U068255 -
3,5-Diiodo-4-hydroxyphenylacetic Acid
BACK ORDERRS-I010237 -
3,5-Diiodo-L-tyrosine
IN STOCKRS-M106087 -
3,5-Diiodothyropropionic acid
BACK ORDERRS-U004177 -
3-(4-Phenoxyphenyl)propanal
IN STOCKRS-Z401JBB -
3-Bromo-L-thyroxine
CUSTOM SYNTHESISRS-I012175 -
3-Iodo-L-tyrosine
IN STOCKRS-U011302 -
3’-Iodo-L-thyronine
BACK ORDERRS-U011272 -
4-(4-Ethyl-2,6-diiodophenoxy)-2,6-diiodo-phenol
BACK ORDERRS-P012272 -
4-(4-hydroxy-3-iodophenoxy)-3,5-diiodobenzoic acid
BACK ORDERRS-U067748 -
4-(4-Hydroxyphenoxy)-3,5-diiodobenzoic Acid
CUSTOM SYNTHESISRS-Z401DUR -
4-(4-Methoxyphenoxy)benzaldehyde
IN STOCKRS-Z401KXY -
4-Hydroxy-3,5-diiodobenzoic Acid
CUSTOM SYNTHESISRS-U015204 -
4-Methyldecane
BACK ORDERRS-U085628 -
Bis(p-methoxyphenyl)iodonium bromide
BACK ORDERRS-P141277 -
Dl-Thyronine
IN STOCKRS-Z393EFE -
DL-THYROXINE
BACK ORDERRS-U062278 -
Ethyl (S)-2-acetamido-3-(3,5-diamino-4-(4-methoxyphenoxy)phenyl)propanoate
IN STOCKRS-P012373 -
Ethyl (S)-2-acetamido-3-(4-(4-methoxyphenoxy)-3,5-dinitrophenyl)propanoate
BACK ORDERRS-Z401L6H -
Ethyl (S)-2-acetamido-3-(4-hydroxy-3,5-dinitrophenyl)propanoate
IN STOCKRS-P012330 -
Ethyl 2-acetamido Acrylate
IN STOCKRS-U095199 -
Ethyl-3-(4-hydroxy-3,5-diiodophenyl)propanoate
IN STOCKRS-U095179 -
isopropyl (S)-2-amino-3-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)propanoate
BACK ORDERRS-U061466 -
L-3,3’-Diiodothyronine (T2)
BACK ORDERRS-U017535 -
L-Thyronine
IN STOCKRS-U072072 -
Levothyroxine Impurity stage II
IN STOCKRS-L022008 -
Levothyroxine Methyl Ester
BACK ORDERRS-L022016 -
Liothyronine sodium
IN STOCKRS-U017479 -
Methyl 3,5-diiodo-4-(4-methoxyphenoxy)benzoate
BACK ORDERRS-I015237 -
Methyl 4-(4-methoxyphenoxy)-3,5-dinitrobenzoate
CUSTOM SYNTHESISRS-Z401I4S -
Methyl 4-chloro-3,5-dinitrobenzoate
IN STOCKRS-D128087 -
Methyl 4-hydroxy-3,5-dinitrobenzoate
CUSTOM SYNTHESISRS-D128097 -
N-(Trifluoroacetyl)-L-thyroxine Methyl Ester
BACK ORDERRS-D114174 -
N-Acetyl-3-iodotyrosine
CUSTOM SYNTHESISRS-D003032 -
Thyroxine Ethyl Ester
BACK ORDERRS-U211NN6 -
α-Hydroxy-4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodo-N-methyl-benzeneacetamide
BACK ORDERRS-I007019 -
β-Hydroxy Thyroxine
IN STOCKRS-L022002 -
Levothyroxine Impurity 13
BACK ORDERRS-L022024 -
Levothyroxine Impurity 16
IN STOCKRS-Z401HHT -
Levothyroxine Impurity 19
IN STOCKRS-L022014 -
Levothyroxine Impurity 71
IN STOCKRS-L022013 -
Levothyroxine Impurity 72
BACK ORDERRS-L022021 -
Levothyroxine Impurity 73
IN STOCKRS-L022004 -
Levothyroxine Impurity 74
BACK ORDERRS-L022015 -
Levothyroxine Impurity 75
IN STOCKRS-L022020 -
Levothyroxine Impurity 76
IN STOCKRS-L022023
Pharmacopoeial names (EP, USP, BP, JP) are used for identification purposes only and do not imply endorsement by those bodies. This product is supplied for laboratory and research use only — not for human or veterinary use.
















![Chemical structure of 2,3,4-Trifluoro-α-[[[(1S)-2-hydroxy-1-methylethyl]amino]methylene]-β-oxo-benzenepropanoic Acid Ethyl Ester](/structures/w4/NWSGXDBBCPYCMQ-QMMMGPOBSA-N.webp?v=8)





















































