Skip to main content
CosIng Checker
CosIng Checker
EU cosmetic ingredients, restrictions and safety
Login
CAS 0 records

CAS 139612-43-4

CAS 139612-43-4 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

Check this CAS numberBrowse annexes

Chemical identity and properties

PubChem 2D chemical structure for CAS 139612-43-4
CAS 139612-43-4PubChem CID 12997931

Dimethyl diacetyl cystinate

IUPAC name
methyl (2R)-2-acetamido-3-[[(2R)-2-acetamido-3-methoxy-3-oxopropyl]disulfanyl]propanoate
Molecular formula
C12H20N2O6S2
Molecular weight
352.4 g/mol
Exact mass
352.07627871 Da
XLogP3
0.3
Topological polar surface area
161.0 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
8
Covalent units
1
Defined stereocentres
2

Also known as

n,n'-diacetylcystine dimethyl esterF222I95KYZL-N,N'-Diacetylcystine dimethyl esterNSC-136019UNII-F222I95KYZL-Cystine, N,N'-diacetyl-, 1,1'-dimethyl esterRefChem:200609DIMETHYL DIACETYL CYSTINATE [INCI]
16 more reported names
(Ac-Cys-OMe)2(AC-CYS-OME)2 (DISULFIDE BOND)n,n'-diacetyl-l-cystine dimethyl esterAcetyl-L-cystine dimethyl esterdimethyl 3,3'-disulfanediyl(2R,2'R)-bis(2-acetamidopropanoate)C12H20N2O6S2(2R,2'R)-Dimethyl 3,3'-disulfanediylbis(2-acetamidopropanoate)DACDM(Ac-Cys-OMe)?AC-L-CYS-OMEZTTORBNKJFMGIM-UWVGGRQHSA-NAS-49002(2R,2'R)-Dimethyl3,3'-disulfanediylbis(2-acetamidopropanoate)3,3'-Dithiobis[(R)-2-(acetylamino)propanoic acid methyl] esterDimethyl (2R,2'R)-3,3'-disulfanediylbis(2-acetamidopropanoate)methyl (2R)-2-acetamido-3-[[(2R)-2-acetamido-3-methoxy-3-oxo-propyl]disulfanyl]propanoate
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 139612-43-4

0 total
No records found for this CAS number.

How CAS 139612-43-4 is used on this site

CAS 139612-43-4 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 139612-43-4 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.