m-Maleimidobenzoyl-L-thyroxine Methyl Ester
- CAS69343-52-8
- CatalogueRS-Z401KBJ
- FormulaC27H18I4N2O7
- MW989.73
On this page
Product identification
| Product name | m-Maleimidobenzoyl-L-thyroxine Methyl Ester |
|---|---|
| Catalogue No. | RS-Z401KBJ |
| CAS No. | 69343-52-8 |
| Molecular formula | C27H18I4N2O7 |
| Molecular weight | 989.73 |
| Availability | Custom synthesis— made to order, typically 3–4 weeks |
| Standard type | General Reference Standards |
| Drug substance | Vitamin |
| Also known as | CATO |
| Storage | Refer to the certificate of analysis (COA) supplied with each lot |
| 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-Z401KBJ / batch number on the certificate |
| Retest date | Printed on the certificate for the lot supplied |
Frequently asked
What documentation is supplied with this lot?
Is the assigned value given on an “as is” basis?
How should this material be stored?
Do you supply pack sizes other than those listed?
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 Vitamin
- General Reference Standards of this kind
- Documents for this item (COA, SDS)
- Certificate of analysis for RS-Z401KBJ
- Request a quotation for RS-Z401KBJ
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 Vitamin
All 39 further standards are listed here — every link is in the page, not loaded later.
-
Vitamin
CUSTOM SYNTHESISRS-Z397EZV -
(R)-1,3-Butanediol, 2,3-dimethyl
IN STOCKRS-Z401KKE -
(S)-2,3-Dimethyl-4-(phenylthio)-2-butanol
IN STOCKRS-Z394KZB -
1-(3,4-METHYLENEDIOXYPHENYL)-3-BUTEN-1-&
IN STOCKRS-M1035024 -
1-Acetylcyclopropanecarboxylic Acid Methyl Ester
IN STOCKRS-Z401IH9 -
2,5-Dimethylbenzene-1,4-diol
IN STOCKRS-D1189006 -
2-(4,4-dimethylpentan-2-yl)-5,7,7-trimethyl-octan-1-ol
IN STOCKRS-D1258023 -
2-(Chloromethyl)-6-methoxy-4-methylpyridine
IN STOCKRS-U211CXD -
25, 26-Dihydroxy Vitamin D3
CUSTOM SYNTHESISRS-V072005 -
Cob(II)alamin(Vitamin B12-Co(II))
BACK ORDERRS-V072001 -
DL-Methionine Methylsulfonium Chloride
IN STOCKRS-U062306 -
Fursultiamine
BACK ORDERRS-U101447 -
L-Ascorbic Acid 6-Stearate
BACK ORDERRS-U211LFX -
Menaquinone-7(MK-7)
IN STOCKRS-U088218 -
Qrazamide
IN STOCKRS-U022040 -
Quercetin 3-O-robinobioside
BACK ORDERRS-U022051 -
tert-Butyl 4-hydroxybutanoate
CUSTOM SYNTHESISRS-Z401JNH -
Tetrahydrofurfuryl Nicotinate
IN STOCKRS-Z401KCW -
ThiamineB1-[13C4] hydrochloride
IN STOCKRS-I118117 -
Vitamin B7-[D2]
IN STOCKRS-I115012 -
VITAMIN CK3
BACK ORDERRS-V072012 -
Vitamin D
CUSTOM SYNTHESISRS-U007223 -
VITAMIN F
BACK ORDERRS-Z394870 -
VITAMIN H
BACK ORDERRS-V072006 -
Vitamin K
BACK ORDERRS-Z395GU7 -
Vitamin K1-[D7]
CUSTOM SYNTHESISRS-I115018 -
Vitamin K5
CUSTOM SYNTHESISRS-U007332 -
VITAMIN KS-II
BACK ORDERRS-V072007 -
Vitamin P
BACK ORDERRS-V072008 -
Vitamin Impurity 33
IN STOCKRS-Z401JZ1 -
Vitamin K1 Impurity 41
CUSTOM SYNTHESISRS-V072010 -
Vitamin Impurity 52
IN STOCKRS-V072004 -
Vitamin Impurity 53
IN STOCKRS-V072002 -
Vitamin Impurity 54
BACK ORDERRS-V072009 -
Vitamin Impurity 55
IN STOCKRS-V072003
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 (1R,3aR,4S,7aR)-Octahydro-7a-methyl-1-[(1R,2E,4R)-1,4,5-trimethyl-2-hexen-1-yl]-1H-inden-4-ol](/structures/w4/NKZXENWRNSFQDO-BXHDBUICSA-N.webp?v=8)
![Chemical structure of (3β,5Z,7E,24R)-3-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]-24-hydroxy-9,10-secochola-5,7,10(19)-triene-24-carboxylic Acid Methyl Ester](/structures/w4/SXMBWQVJAZZKQP-DQKQVHDDSA-N.webp?v=8)


![Chemical structure of 1-(2-(2-(2-(2-Azidoethoxy)ethoxy)ethoxy)ethyl)-3-(3',6'-dihydroxy-3-oxo-3h-spiro[isobenzofuran-1,9'-xanthen]-5-yl)thiourea](/structures/w4/CLUBBHNFIIDPNO-UHFFFAOYSA-N.webp?v=8)
















![Chemical structure of ThiamineB1-[13C4] hydrochloride](/structures/w4/DPJRMOMPQZCRJU-VJFONHOHSA-M.webp?v=8)
![Chemical structure of Vitamin B7-[D2]](/structures/w4/YBJHBAHKTGYVGT-OXQHWPBHSA-N.webp?v=8)





![Chemical structure of Vitamin K1-[D7]](/structures/w4/MBWXNTAXLNYFJB-VKXGTQFMSA-N.webp?v=8)








