← Back to patent-cliff list
Emtricitabine/Tenofovir Alafenamide Fumarate
Tier B — Position earlyEmtricitabine/Tenofovir Alafenamide Fumarate
Gilead Inc
Originator
2016
First approval
-
Expiry (public)
$2.76B ▲
Peak sales
Small molecule
Type
Targets：RT, HIV-1 RT
Brand：Descovy
Indications (approved)：HIV infection
Regional status
US
Approved
2016-04-04
EU
Approved
2016-04-21
China
Approved
2018-11-21
Japan
Approved
2016-12-09
Factories producing this API12
Factories registered as producing this API in our sourcing network (RFQ records + product master), sorted by RFQ activity; the snapshot carries no cost or customer data.
12 producing factories on file — sign in to view the named list (factory details are not shown to guests).
Sign in to view factories →Synthetic routes & intermediates5 routes
Originator routes × 1Optimised (non-patent) × 4Process routes × 0
Routes are ordered originator first, then optimised / process (non-patent) routes; each lists steps, overall yield and the intermediate table (code / CAS / name) — ready for supplier sourcing and RFQ. Rendered by this site from structured data; no third-party route graphics used.
OriginatorRoute 1Steps 7 · Total yield 33 mg
EMTR-0016117-80-2EMTR-002144967-77-1EMTR-003136831-95-3EMTR-00468-11-1EMTR-005136891-16-2EMTR-006—EMTR-007111878-21-8EMTR-008—EMTR-009143491-56-9API · Emtricitabine/Tenofovir Alafenamide Fumarate
| Code | CAS No. | Intermediate |
|---|---|---|
| EMTR-001 | 6117-80-2 | (Z)-but-2-ene-1,4-diol |
| EMTR-002 | 144967-77-1 | (Z)-but-2-ene-1,4-diyl dibutyrate |
| EMTR-003 | 136831-95-3 | 2-oxoethyl butyrate |
| EMTR-004 | 68-11-1 | 2-mercaptoacetic acid |
| EMTR-005 | 136891-16-2 | (5-oxo-1,3-oxathiolan-2-yl)methyl butyrate |
| EMTR-006 | - | (5-acetoxy-1,3-oxathiolan-2-yl)methyl butyrate |
| EMTR-007 | 111878-21-8 | 5-fluoro-N-(trimethylsilyl)-2-((trimethylsilyl)oxy)pyrimidin-4-amine |
| EMTR-008 | - | (5-(4-amino-5-fluoro-2-oxopyrimidin-1(2H)-yl)-1,3-oxathiolan-2-yl)methyl butyrate |
| EMTR-009 | 143491-56-9 | ((2R,5S)-5-(4-amino-5-fluoro-2-oxopyrimidin-1(2H)-yl)-1,3-oxathiolan-2-yl)methyl butyrate |
OptimisedRoute 2Steps 10 · Total yield 5.5 mg
EMTR-01039281-67-9EMTR-011—EMTR-012139757-70-3EMTR-013140-89-6EMTR-014—EMTR-015139689-03-5EMTR-016139757-71-4EMTR-017—EMTR-018324015-67-0EMTR-019—EMTR-020—EMTR-021—API · Emtricitabine/Tenofovir Alafenamide Fumarate
| Code | CAS No. | Intermediate |
|---|---|---|
| EMTR-010 | 39281-67-9 | (2S,3S,4S,5S,6S)-6-(hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol |
| EMTR-011 | - | (2R,3S,4S,5R,6S)-6-((tosyloxy)methyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate |
| EMTR-012 | 139757-70-3 | (2R,3S,4S,5R,6S)-2-bromo-6-((tosyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate |
| EMTR-013 | 140-89-6 | potassium O-ethyl carbonodithioate |
| EMTR-014 | - | (2S,3S,4S)-8-oxa-6-thiabicyclo[3.2.1]octane-2,3,4-triol |
| EMTR-015 | 139689-03-5 | ((2R,5R)-5-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)-1,3-oxathiolan-2-yl)methanol |
| EMTR-016 | 139757-71-4 | (R)-1-((2R,5R)-2-(((tert-butyldiphenylsilyl)oxy)methyl)-1,3-oxathiolan-5-yl)ethane-1,2-diol |
| EMTR-017 | - | (2R)-2-(((tert-butyldiphenylsilyl)oxy)methyl)-1,3-oxathiolane-5-carboxylic acid |
| EMTR-018 | 324015-67-0 | (2R)-2-(((tert-butyldiphenylsilyl)oxy)methyl)-1,3-oxathiolan-5-yl acetate |
| EMTR-019 | - | N-(5-fluoro-2-((trimethylsilyl)oxy)pyrimidin-4-yl)acetamide |
| EMTR-020 | - | N-(1-((2R,5S)-2-(((tert-butyldiphenylsilyl)oxy)methyl)-1,3-oxathiolan-5-yl)-5-fluoro-2-oxo-1,2-dihydropyrimidin-4-yl)acetamide |
| EMTR-021 | - | 4-amino-1-((2R,5S)-2-(((tert-butyldiphenylsilyl)oxy)methyl)-1,3-oxathiolan-5-yl)-5-fluoropyrimidin-2(1H)-one |
OptimisedRoute 3Steps 6 · Total yield 20 mg
EMTR-019—EMTR-02240018-26-6EMTR-02364904-47-8EMTR-024146726-76-3EMTR-025—EMTR-026144371-00-6EMTR-027—EMTR-028156198-94-6API · Emtricitabine/Tenofovir Alafenamide Fumarate
| Code | CAS No. | Intermediate |
|---|---|---|
| EMTR-019 | - | N-(5-fluoro-2-((trimethylsilyl)oxy)pyrimidin-4-yl)acetamide |
| EMTR-022 | 40018-26-6 | 1,4-dithiane-2,5-diol |
| EMTR-023 | 64904-47-8 | 2-oxoethyl benzoate |
| EMTR-024 | 146726-76-3 | (5-acetoxy-1,3-oxathiolan-2-yl)methyl benzoate |
| EMTR-025 | - | (5-(4-acetamido-5-fluoro-2-oxopyrimidin-1(2H)-yl)-1,3-oxathiolan-2-yl)methyl benzoate |
| EMTR-026 | 144371-00-6 | 4-amino-5-fluoro-1-(2-(hydroxymethyl)-1,3-oxathiolan-5-yl)pyrimidin-2(1H)-one |
| EMTR-027 | - | (5-(4-amino-5-fluoro-2-oxopyrimidin-1(2H)-yl)-1,3-oxathiolan-2-yl)methyl dihydrogen phosphate |
| EMTR-028 | 156198-94-6 | ((2R,5S)-5-(4-amino-5-fluoro-2-oxopyrimidin-1(2H)-yl)-1,3-oxathiolan-2-yl)methyl dihydrogen phosphate |
OptimisedRoute 4Steps 5 · Total yield 45 mg
EMTR-02240018-26-6EMTR-029298-12-4EMTR-030672952-08-8EMTR-031147027-43-8EMTR-03289-78-1EMTR-033147027-09-6EMTR-0342022-85-7EMTR-035764659-72-5API · Emtricitabine/Tenofovir Alafenamide Fumarate
| Code | CAS No. | Intermediate |
|---|---|---|
| EMTR-022 | 40018-26-6 | 1,4-dithiane-2,5-diol |
| EMTR-029 | 298-12-4Available | 2-oxoacetic acid |
| EMTR-030 | 672952-08-8 | 5-hydroxy-1,3-oxathiolane-2-carboxylic acid |
| EMTR-031 | 147027-43-8 | (2R,5R)-5-acetoxy-1,3-oxathiolane-2-carboxylic acid |
| EMTR-032 | 89-78-1Available | (1R,2S,5R)-2-isopropyl-5-methylcyclohexan-1-ol |
| EMTR-033 | 147027-09-6 | (2R,5R)-(1R,2S,5R)-2-isopropyl-5-methylcyclohexyl 5-acetoxy-1,3-oxathiolane-2-carboxylate |
| EMTR-034 | 2022-85-7 | 4-amino-5-fluoropyrimidin-2(1H)-one |
| EMTR-035 | 764659-72-5 | (1R,2S,5R)-2-isopropyl-5-methylcyclohexyl (2R,5S)-5-(4-amino-5-fluoro-2-oxopyrimidin-1(2H)-yl)-1,3-oxathiolane-2-carboxylate |
OptimisedRoute 5Steps 6 · Total yield 80 g
EMTR-007111878-21-8EMTR-02240018-26-6EMTR-029298-12-4EMTR-03289-78-1EMTR-03626315-61-7EMTR-037—EMTR-0381020151-61-4EMTR-039764659-73-6EMTR-040258832-61-0API · Emtricitabine/Tenofovir Alafenamide Fumarate
| Code | CAS No. | Intermediate |
|---|---|---|
| EMTR-007 | 111878-21-8 | 5-fluoro-N-(trimethylsilyl)-2-((trimethylsilyl)oxy)pyrimidin-4-amine |
| EMTR-022 | 40018-26-6 | 1,4-dithiane-2,5-diol |
| EMTR-029 | 298-12-4Available | 2-oxoacetic acid |
| EMTR-032 | 89-78-1Available | (1R,2S,5R)-2-isopropyl-5-methylcyclohexan-1-ol |
| EMTR-036 | 26315-61-7 | (1R,2S,5R)-2-isopropyl-5-methylcyclohexyl 2-oxoacetate |
| EMTR-037 | - | (2R,5S)-(1R,2S,5R)-2-isopropyl-5-methylcyclohexyl 5-hydroxy-1,3-oxathiolane-2-carboxylate |
| EMTR-038 | 1020151-61-4 | (1R,2S,5R)-2-isopropyl-5-methylcyclohexyl (2R,5R)-5-chloro-1,3-oxathiolane-2-carboxylate |
| EMTR-039 | 764659-73-6 | (1R,2S,5R)-2-isopropyl-5-methylcyclohexyl (2R,5S)-5-(4-amino-5-fluoro-2-oxopyrimidin-1(2H)-yl)-1,3-oxathiolane-2-carboxylate oxalate |
| EMTR-040 | 258832-61-0 | 4-amino-5-fluoro-1-((2R,5S)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl)pyrimidin-2(1H)-one hydrochloride |
Frequently asked questions
What are the approved indications of Emtricitabine/Tenofovir Alafenamide Fumarate?
Approved indications include: HIV infection.
When does the Emtricitabine/Tenofovir Alafenamide Fumarate patent expire?
No public expiry year is available for Emtricitabine/Tenofovir Alafenamide Fumarate yet; this page updates once verified.
How many synthesis routes are recorded for Emtricitabine/Tenofovir Alafenamide Fumarate?
5 synthesis routes are recorded; the shortest is 5 steps with 45 mg total yield. Intermediates in each route carry codes and CAS numbers.
Where can I buy Emtricitabine/Tenofovir Alafenamide Fumarate intermediates?
2 intermediate CAS of Emtricitabine/Tenofovir Alafenamide Fumarate are available through the Unibest supply network — see the route tables on this page and request a quote per CAS.
How do I get a quote for Emtricitabine/Tenofovir Alafenamide Fumarate intermediates?
Open the CAS profile of the target intermediate from this page, or submit an RFQ directly — the CAS enters the matching flow automatically and the supply network responds with quotes.
Source: cross-verified data (structured fields only) · 2026-09-29