Home/Compounds/Pharmaceutical Intermediate/5'-Dimethoxytrityl-3'-deoxythymidine 2'-[(2-cyanoethyl)-(N,N-diisopropyl)]-phosphoramidite
C40H49N4O8P
744.8 g/mol
Pharmaceutical IntermediateWarning
Thymidine, 5'-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3'-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]
CAS98796-51-1
Category
Pharmaceutical Intermediate
Compound Class
Amine
Primary Use
Pharmaceutical Intermediate
This compound is a nucleoside phosphoramidite designed for automated oligonucleotide synthesis. Its structure features a thymine base, a dimethoxytrityl (DMT) protecting group, and a diisopropylamino-cyanoethoxy phosphoramidite moiety, enabling efficient incorporation into growing DNA strands.
Building block for oligonucleotide synthesisReagent for solid-phase DNA synthesis
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Safety Reference
Warning
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for Thymidine, 5'-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3'-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite] (CAS 98796-51-1) is 2934.99.
HS code (international, 6-digit)
2934.99
EU CN code (8-digit)
2934 99 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
3-[[(2R,3S,5R)-2-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl]oxy-[di(propan-2-yl)amino]phosphanyl]oxypropanenitrile
InChIKey
UNOTXUFIWPRZJX-CEXSRUIHSA-N
SMILES
CC1=CN(C(=O)NC1=O)[C@H]2C[C@@H]([C@H](O2)COC(C3=CC=CC=C3)(C4=CC=C(C=C4)OC)C5=CC=C(C=C5)OC)OP(N(C(C)C)C(C)C)OCCC#N
Synonyms (24)
- Cytidine Impurity 66
- DMT-dT Pharmadite(R)
- DMT-dT Phosphoramidite
- DMT-dT-CE Phosphoramidite
- DMT-dT-CE, </=0.2% KF
- dT Phosphoramidite
- dT-CE phosphoramidite
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