Molekula
5'-O-(4,4'-Dimethoxytrityl)thymidine (DMT-T)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
5'-O-(4,4'-Dimethoxytrityl)thymidine (DMT-T) is a protected nucleoside widely used in oligonucleotide synthesis as a key building block for DNA sequences. It features a 4,4'-dimethoxytrityl (DMT) protecting group at the 5' hydroxyl, enabling controlled chain elongation during phosphoramidite chemistry. This chemical has a CAS number of 40615-39-2, molecular formula C31H32N2O7, and a molecular weight of 544.59 g/mol. Store at 2–8°C under inert conditions to preserve stability. The product carries a Warning signal word due to potential skin/eye irritation.
Molekula supplies 5'-O-(4,4'-Dimethoxytrityl)thymidine (DMT-T) in 1 g packs, from £55.80 inc. VAT. It is made or sourced to order. Every batch ships with a certificate of analysis. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 5 December 2026
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 g — £46.50 per pack ex VAT · £55.80 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Solid |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 18093653 |
| CAS Number | 40615-39-2 |
| IUPAC Name | 1-[(2R,4S,5R)-5-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-4-hydroxyoxolan-2-yl]-5-methylpyrimidine-2,4-dione |
| EC Number | 255-003-1 |
| Molecular Formula | C31H32N2O7 |
| Molecular Weight | 544.59 |
| Exact Mass | 544.221 |
| 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)O |
| InChIKey | UBTJZUKVKGZHAD-UPRLRBBYSA-N |
| InChI | InChI=1S/C31H32N2O7/c1-20-18-33(30(36)32-29(20)35)28-17-26(34)27(40-28)19-39-31(21-7-5-4-6-8-21,22-9-13-24(37-2)14-10-22)23-11-15-25(38-3)16-12-23/h4-16,18,26-28,34H,17,19H2,1-3H3,(H,32,35,36)/t26-,27+,28+/m0/s1 |
| PubChem CID | 162419 |
| REACH Code | Y110 |
| HTS Code | 29349990 |
| Tariff Code | 2934999090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
We haven't published a Safety Data Sheet for this product yet. Ask us and we'll send you one.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 5-DMTT
- 5'--O--(4,4'-dimethyoxytrityl) thymidine
- 5'-O-(4,4'-Dimethoxytrityl)thymidine
- 5'-O-Dimethoxytrityl-deoxythymidine
- 5'-O-Dimethoxytritylthymidine
- 5'-O-Dimethyltritylthymidine
- 5'-O-DMT-dT
- 5'-O-DMT-Thymidine
- DMT-T
- Thymidine, 5'-O-[bis(4-methoxyphenyl)phenylmethyl]-
Frequently asked questions
What is 5'-O-(4,4'-Dimethoxytrityl)thymidine (DMT-T) used for?
DMT-T is primarily used in oligonucleotide synthesis as a protected thymidine nucleoside, enabling controlled chain elongation in DNA/RNA synthesis.
What is the chemical formula and molecular weight of DMT-T?
The chemical formula is C₃₁H₃₂N₂O₇, and the molecular weight is 544.59 g/mol.
How should DMT-T be stored?
Store DMT-T at 2–8°C in a dry, inert atmosphere to prevent degradation from moisture or light.
What grade or purity is available for DMT-T?
Molekula supplies DMT-T as a solid. Please contact us for grade and purity details for a specific batch.
Can Molekula supply DMT-T in bulk quantities?
Yes, we offer DMT-T in bulk (1g–1kg+), with custom packaging available upon request for large-scale synthesis.
What documentation is provided with a DMT-T order?
Each order includes a Certificate of Analysis (CoA), Safety Data Sheet (SDS), and batch-specific quality documentation.
Where can I buy 5'-O-(4,4'-Dimethoxytrityl)thymidine (DMT-T)?
Directly from Molekula, which lists 5'-O-(4,4'-Dimethoxytrityl)thymidine (DMT-T) in 1 g packs from £55.80 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.