EP0081193A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A stable radioactive diagnostic agent and a non-radioactive carrier therefor
Assignee: Nihon Medi Physics Co Ltd
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Filing: 1982-12-01
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Granted: —
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Expires: 2002-12-01
Abstract
Abstract A stable non-radioactive carrier for use in production of To labeled radioactive diagnostic agent comprising a chelating agent, a water-soluble reducing agent for pertechnetate and a stabilizer chosen from ascorbic acid and erythorbic acid, and their pharmaceutically acceptable salts and esters In an amount of more than about 100 moles per 1 mol of said water-soluble reducing agent.
Inventors
- 👤 Makoto Azuma
- 👤 Masaaki Hazue
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 08:57
CPC Classifications
A; A61; A61B; A61B6/00; A61K; A61K51/00; A61K51/02; A61K51/04; A61K51/0474; A61K51/0478; A61K2123/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
58 words
A stable non-radioactive carrier for use in production of 99m Tc-labeled radioactive diagnostic agent comprising a chelating agent, a water-soluble reducing agent for pertechnetate and a stabilizer chosen from ascorbic acid and erythorbic acid, and their pharmaceutically acceptable salts and esters in an amount of more than about 100 moles per 1 mol of said water-soluble reducing agent.
Claim 2
Dependent Claim
58 words
A stable non-radioactive carrier for use in production of 99m Tc-labeled radioactive diagnostic agent comprising a chelating agent, a water-soluble reducing agent for pertechnetate and a stabilizer chosen from ascorbic acid and erythorbic acid, and their pharmaceutically acceptable salts and esters in an amount of more than about 100 moles per 1 mol of said water-soluble reducing agent.
Claim 3
Dependent Claim
17 words
The stable non-radioactive carrier according to claim l, wherein the water-soluble reducing agent is a stannous salt.
Claim 4
Dependent Claim
64 words
3 . A stable 99m Tc-labeled radioactive diagnostic agent which is produced by contacting 99m Tc-containing pertechnetate with a non-radioactive carrier comprising a chelating agent, an water-soluble reducing agent for pertechnetate and a stabilizer chosen from ascorbic acid and arythorbic acid, and pharmaceutically acceptable salts and esters in an amount of more than about 100 moles per 1 mol of said water-soluble reducing agent.
Claim 5
Dependent Claim
64 words
3 . A stable 99m Tc-labeled radioactive diagnostic agent which is produced by contacting 99m Tc-containing pertechnetate with a non-radioactive carrier comprising a chelating agent, an water-soluble reducing agent for pertechnetate and a stabilizer chosen from ascorbic acid and arythorbic acid, and pharmaceutically acceptable salts and esters in an amount of more than about 100 moles per 1 mol of said water-soluble reducing agent.
Claim 6
Dependent Claim
20 words
The stable 99m Tc-labeled radioactive diagnostic agent according to claim 3, wherein the water-soluble reducing agent is a stannous salt.
References Cited (Backward Citations)
No citation records indexed.
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