US3299042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iodination of the heterocyclic bases in nucleosides, nucleotides, nucleoside-5'-polyphosphates, and nucleic acids
Assignee: Individual
•
Filing: 1964-06-22
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Granted: 1967-01-17
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Expires: 1984-06-22
Abstract
No abstract record available.
Inventors
- 👤 Lipkin David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:27
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
67 words
PROCESS FOR THE IODINATION OF THE HETEROCYCLIC BASES IN SENSITIVE DERIVATIVES THEREOF SELECTED FROOM THE CLASS CONSISTING OF NUCLEOTIDES, NUCLEOSIDES, NUCLEOSIDE-POLYPHOSPHATES AND NUCLEIC ACIDS, WHICH COMPRISES (A) REACTING THE SENSITIVE DERIVATIVE WITH N-IODOO-SUCCINIMIDE (B) IN A SULFOXIDE SOLVENT (C) IN THE PRESENCE OF A SULFUR CATALYST SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL SULFUR AND THE ALKYL, ARYL, AND HETEROCYCLIC DI-SULFIDES, AND (D) RECOVERING THE IODINATED PRODUCT.
Claim 2
Dependent Claim
67 words
PROCESS FOR THE IODINATION OF THE HETEROCYCLIC BASES IN SENSITIVE DERIVATIVES THEREOF SELECTED FROOM THE CLASS CONSISTING OF NUCLEOTIDES, NUCLEOSIDES, NUCLEOSIDE-POLYPHOSPHATES AND NUCLEIC ACIDS, WHICH COMPRISES (A) REACTING THE SENSITIVE DERIVATIVE WITH N-IODOO-SUCCINIMIDE (B) IN A SULFOXIDE SOLVENT (C) IN THE PRESENCE OF A SULFUR CATALYST SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL SULFUR AND THE ALKYL, ARYL, AND HETEROCYCLIC DI-SULFIDES, AND (D) RECOVERING THE IODINATED PRODUCT.
Claim 3
Dependent Claim
14 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 8-IODOO-GUANOSINE, ITS NUCLEOTTIDES AND NUCLEIC ACIDS.
Claim 4
Dependent Claim
14 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 8-IODOO-GUANOSINE, ITS NUCLEOTTIDES AND NUCLEIC ACIDS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |