JP4949251B2 - 診断化合物 - Google Patents
診断化合物 Download PDFInfo
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- JP4949251B2 JP4949251B2 JP2007530793A JP2007530793A JP4949251B2 JP 4949251 B2 JP4949251 B2 JP 4949251B2 JP 2007530793 A JP2007530793 A JP 2007530793A JP 2007530793 A JP2007530793 A JP 2007530793A JP 4949251 B2 JP4949251 B2 JP 4949251B2
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- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 208000015486 malignant pancreatic neoplasm Diseases 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 201000001441 melanoma Diseases 0.000 description 1
- 102000006240 membrane receptors Human genes 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- QARBMVPHQWIHKH-UHFFFAOYSA-N methanesulfonyl chloride Chemical compound CS(Cl)(=O)=O QARBMVPHQWIHKH-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000011278 mitosis Effects 0.000 description 1
- 230000014399 negative regulation of angiogenesis Effects 0.000 description 1
- 229910052757 nitrogen Chemical group 0.000 description 1
- 238000009206 nuclear medicine Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000000414 obstructive effect Effects 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- KHPXUQMNIQBQEV-UHFFFAOYSA-N oxaloacetic acid Chemical compound OC(=O)CC(=O)C(O)=O KHPXUQMNIQBQEV-UHFFFAOYSA-N 0.000 description 1
- 201000002528 pancreatic cancer Diseases 0.000 description 1
- 208000008443 pancreatic carcinoma Diseases 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002062 proliferating effect Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000017854 proteolysis Effects 0.000 description 1
- 229940024999 proteolytic enzymes for treatment of wounds and ulcers Drugs 0.000 description 1
- 239000012521 purified sample Substances 0.000 description 1
- 125000002112 pyrrolidino group Chemical group [*]N1C([H])([H])C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 229940107700 pyruvic acid Drugs 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 238000001959 radiotherapy Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000004366 reverse phase liquid chromatography Methods 0.000 description 1
- 201000000849 skin cancer Diseases 0.000 description 1
- 210000000813 small intestine Anatomy 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- DZLFLBLQUQXARW-UHFFFAOYSA-N tetrabutylammonium Chemical compound CCCC[N+](CCCC)(CCCC)CCCC DZLFLBLQUQXARW-UHFFFAOYSA-N 0.000 description 1
- WHRNULOCNSKMGB-UHFFFAOYSA-N tetrahydrofuran thf Chemical compound C1CCOC1.C1CCOC1 WHRNULOCNSKMGB-UHFFFAOYSA-N 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000001685 thyroid gland Anatomy 0.000 description 1
- 230000008467 tissue growth Effects 0.000 description 1
- 230000007838 tissue remodeling Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- ZGYICYBLPGRURT-UHFFFAOYSA-N tri(propan-2-yl)silicon Chemical compound CC(C)[Si](C(C)C)C(C)C ZGYICYBLPGRURT-UHFFFAOYSA-N 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 1
- 230000004614 tumor growth Effects 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- 210000005166 vasculature Anatomy 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 230000029663 wound healing Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K51/00—Preparations containing radioactive substances for use in therapy or testing in vivo
- A61K51/02—Preparations containing radioactive substances for use in therapy or testing in vivo characterised by the carrier, i.e. characterised by the agent or material covalently linked or complexing the radioactive nucleus
- A61K51/04—Organic compounds
- A61K51/08—Peptides, e.g. proteins, carriers being peptides, polyamino acids, proteins
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K51/00—Preparations containing radioactive substances for use in therapy or testing in vivo
- A61K51/02—Preparations containing radioactive substances for use in therapy or testing in vivo characterised by the carrier, i.e. characterised by the agent or material covalently linked or complexing the radioactive nucleus
- A61K51/04—Organic compounds
- A61K51/08—Peptides, e.g. proteins, carriers being peptides, polyamino acids, proteins
- A61K51/088—Peptides, e.g. proteins, carriers being peptides, polyamino acids, proteins conjugates with carriers being peptides, polyamino acids or proteins
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Pharmacology & Pharmacy (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Epidemiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Engineering & Computer Science (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Peptides Or Proteins (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Hydrogenated Pyridines (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
NMR:核磁気共鳴
TFA:トリフルオロ酢酸
hr(s):時間
min(s):分
DMAP:4−(ジメチルアミノ)ピリジン
THF:テトラヒドロフラン
DCM:ジクロロメタン
DMF:N,N−ジメチルホルムアミド
TBAF:フッ化テトラブチルアンモニウム
MeOH:メタノール
TLC:薄層クロマトグラフィー
TIS:トリイソプロピルシラン
DMSO:ジメチルスルホキシド
PBS:リン酸緩衝食塩水
PyAOP:[7−アザベンゾトリアゾール−1−イルオキシトリス(ピロリジノ)ホスホニウム−ヘキサフルオロリン酸]
Boc:t−ブトキシカルボニル
RT:室温。
ペプチド(化合物2)は標準的ペプチド合成法を用いて合成した。
乾燥ヘキサエチレングリコール(25g、88mmol)と塩化メタンスルホニル(22.3g、195mmol)の無水THF(125mL)溶液をアルゴン雰囲気下に保ち、氷水浴で0℃に冷却した。トリエチルアミン(19.7g、195mmol)の無水THF(25mL)溶液を、45分かけて滴下した。1時間後に冷浴を取り除き、反応液をさらに4時間撹拌した。混合物に水55mLを添加し、次いで炭酸水素ナトリウム(5.3g、pH8まで)及びアジ化ナトリウム(12.7g、195mmol)を添加した。THFを留去し、水溶液を24時間還流した(二層を形成)。混合物を冷却し、エーテル(100mL)を添加し、水相を塩化ナトリウムで飽和させた。相を分離して、水相をエーテル(4×50mL)で抽出した。有機相を一つにまとめて塩水(2×50mL)で洗浄し、乾燥させた(MgSO4)。溶媒を濾過して蒸発させ、黄色油状物26g(89%)を得た。生成物はそれ以上精製せずに次の工程に用いた。
激しく攪拌した5%HCl(200mL)中の1,17−ジアジド−3,6,9,12,15−ペンタオキサヘプタデカン(25g、75mmol)の懸濁液に、トリフェニルホスフィン(19.2g、73mmol)のエーテル(150mL)溶液を室温で3時間かけて添加した。反応混合物をさらに24時間撹拌した。相を分離して、水相をジクロロメタン(3×40mL)で抽出した。水相を氷水浴で冷却し、固形水酸化カリウムを添加してpHを12に調整した。水相を濃縮して、生成物をジクロロメタン(150mL)で抽出した。有機相を乾燥(Na2SO4)、濃縮して、黄色油状物22g(95%)を得た。生成物をエレクトロスプレーイオン化質量分析法(ESI−MS)で分析した(MH+計算値307.19、実測値307.4)。粗油状物はそれ以上精製せずに次の工程に用いた。
17−アジド3,6,9,12,15−ペンタオキサヘプタデカナミン(15g、50mmol)のジクロロメタン(100mL)溶液に、ジグリコール酸無水物(Acros社、6.4g、55mmol)を添加した。反応混合物を一晩撹拌した。反応はESI−MS分析でモニターし、反応を完結に導くため試薬を追加した。溶液を濃縮して黄色残渣を得、これを水(250mL)に溶解させた。ジクロロメタンで一晩連続的に抽出することによって水相から生成物を単離した。溶媒を乾燥、蒸発させたところ、収量は18g(85%)であった。生成物をESI−MS分析で特性決定した(MH+計算値423.20、実測値423.4)。生成物はそれ以上精製せずに次の工程に用いた。
23−アジド−5−オキソ−6−アザ−3,9,12,15,18,21−ヘキサオキサトリコサン酸(9.0g、21mmol)を水(50mL)に溶解し、H2(g)−Pd/C(10%)を用いて還元した。反応は、ESI−MS分析で所望の生成物に完全に転化したことが認められるまで(MH+計算値397.2、実測値397.6)、行った。粗生成物はそれ以上精製せずに次の工程に用いた。
ジシクロヘキシカルボジイミド(515mg、2.50mmol)のジオキサン溶液(2.5mL)を、(Boc−アミノオキシ)酢酸(477mg、2.50mmol)とN−ヒドロキシスクシンイミド(287mg、2.50mmol)のジオキサン溶液(2.5mL)に滴下した。反応液を室温で1時間撹拌し、濾過した。濾液を、23−アミノ−5−オキソ−6−アザ−3,9,12,15,18,21−ヘキサオキサトリコサン酸(1.0g、2.5mmol)とN−メチルモルホリン(278μl、2.50mmol)の水溶液(5mL)が入った反応容器へ移した。混合物を室温で30分間撹拌した。所望の生成物に完全に転化したことがESI−MS分析で認められた(MH+計算値570.28、実測値570.6)。粗生成物を分取用HPLC(カラム:Phenomenex Luna 5μ C18(2)250×21.20mm、検出波長214nm、勾配:60分間で0〜50%B(A=H2O/0.1%TFA、B=アセトニトリル/0.1%TFA)、流速10mL/分)で精製し、純粋な生成物500mg(38%)を得た。生成物はHPLCで分析した(カラム:Phenomenex Luna 3μ C18(2)50×2.00mm、検出波長214nm、勾配:10分間で0〜50%のB(A=H2O/0.1%TFA、B=アセトニトリル/0.1%TFA)、流速0.75mL/分、保持時間(Rt):5.52分)。NMR分析でさらに確認した。
(Boc−アミノオキシ)アセチル−PEG(6)−ジグリコール酸(0.15mmol、85mg)及びPyAOP(0.13mmol、68mg)をDMF(2mL)に溶解した。N−メチルモルホリン(0.20mmol、20μL)を添加し、混合物を10分間撹拌した。化合物2(0.100mmol、126mg)とN−メチルモルホリン(0.20mmol、20μL)のDMF(4mL)溶液を添加し、反応混合物を25分間撹拌した。追加のN−メチルモルホリン(0.20mmol、20μL)を添加し、混合物をさらに15分間撹拌した。DMFを減圧蒸発させ、生成物を10%アセトニトリル/水で抽出し、分取用HPLC(カラム:Phenomenex Luna 5μ C18(2)250×21.20mm、検出UV波長214nm、勾配:40分間で5〜50%B(A=H2O/0.1%のTFA、B=アセトニトリル/0.1%のTFA)、流速10mL/分)で精製し、100mgの半精製標品を得た。TFAに代えてHCOOHを用いた2次精製工程(勾配:0〜30%B、その他は上記の通り)で、生成物89mg(50%)を得た。生成物をHPLC(カラム:Phenomenex Luna 3μ C18(2)50×2mm、検出UV波長214nm、勾配:10分間で0〜30%B(A=H2O/0.1%のHCOOH、B=アセトニトリル/0.1%のHCOOH)、流速0.3mL/分、保持時間10.21分)で分析した。ESI−MSでさらに生成物の特性決定を行った(MH2 2+計算値905.4、実測値906.0)。
方法1
18F−フッ化物(最大370MBq)をKryptofix 222(0.5mlアセトニトリル中5mg)及び炭酸カリウム(0.1M水溶液50μl)の存在下、N2下で110℃に20分間加熱して共沸乾燥した。この間、3×0.5mlのアセトニトリルを添加し、蒸発させた。40℃未満に冷却した後、トリメチルアンモニウムベンズアルデヒドトリフレート溶液(0.4mlのDMSO中1mg)を添加した。反応容器を密閉し、90℃で15分間加熱して標識反応を行った。一方、化合物3(6mg)を水分量5%のTFA(200μl)で室温で5分間処理した。次いで溶媒を減圧除去した。脱保護ペプチドを、0.1M NH4OAc緩衝液(pH4)0.4mlに再び溶解し、反応容器中で4−18F−フルオロベンズアルデヒドと一緒にした。反応容器を密閉し、70℃に15分間加熱して結合させた。室温に冷却した後、分取用ラジオHPLC(カラム:Phenomenex Luna C18(2) 5μm 10×100mm、溶媒A=水/0.1%TFA、溶媒B=アセトニトリル/0.1%TFA、勾配:5分間で15〜25%B、12分間で25%B、10分間25〜50%のB、流速4.0mL/分、検出UV波長210及び254nm)で生成物を得た。生成物画分を水(10ml)で希釈し、SepPak C18−plusカートリッジ(10mlのEtOH及び20mlのH2Oでコンディショニング)にかけた。化合物4をエタノール(1mL)で溶出した。エタノールを減圧除去し、化合物4をPBSに処方した。
a) 18 F−フルオロベンズアルデヒドの放射合成
18F−フッ化物(最高370MBq)をKryptofix 222(0.5mlアセトニトリル中5mg)及び炭酸カリウム(0.1M水溶液50μl)の存在下、N2下で110℃に20分間加熱して共沸乾燥する。この間、3×0.5mLのアセトニトリルを添加し、蒸発させる。40℃未満に冷却した後、トリメチルアンモニウムベンズアルデヒドトリフレート溶液(0.4mlのDMSO中1mg)を添加する。反応容器を密閉し、90℃で15分間加熱して標識反応を行う。粗反応混合物を室温に冷却し、水を添加して希釈する。混合物を複数のイオン交換カートリッジ(エタノール(又はアセトニトリル)及び水でコンディショニング)に連続して流し、アセトニトリル/水混合物で溶出する。溶出液をC18 SepPakを用いて濃縮するがフルオロベンズアルデヒドはアセトニトリル中に溶出される。
化合物3を水分量5%のTFAで室温で5分間処理する。次いで溶媒を減圧蒸発させて除去する。ペプチドを0.1M NH4OAc緩衝液(pH4)0.5mLに再び溶解し、反応容器中で4−18F−フルオロベンズアルデヒドと一緒にする。反応容器を密閉し、70℃に15分間加熱して結合させる。室温に冷却した後、分取用ラジオHPLC(方法1に記載の通り)又はSPEで生成物を得る。
結合試験
αvβ3インテグリン受容体を発現することが知られている細胞膜標品を用いて、125I−エキスタチン及びF−19標識ペプチドを競合リガンドとして用いた競合結合試験を実施した。結合曲線を得て、Prism(商標)ソフトウェアを用いてKiを算出した。
ルイス肺癌(LLC)細胞(0.1mL、1×107細胞/mL培地)をマウス(オス、C57BL/6、約25g)の右大腿部内側に皮下注射した。腫瘍の増殖についてマウスを15日間モニターしたが、この時点が、モデル増殖の期間中最も血管新生が高いレベルを示すため、選択された)。
Claims (12)
- 放射性フッ素化方法であって、以下の式(Ia)の化合物を式(II)の化合物と反応させて式(IIIa)の化合物を得る、方法。
- aが1である、請求項1記載の方法。
- bが3〜10である、請求項1又は請求項2記載の方法。
- 請求項1乃至請求項3のいずれか1項記載の式(Ia)の化合物。
- 以下の式(IIIa)の化合物又はその塩。
- 当該化合物が次式で表される、式(IIIa)の化合物。
- 当該化合物が次式で表される、式(IIIa)の化合物。
- 請求項5乃至請求項7のいずれか1項記載の式(IIIa)の化合物又はその塩の有効量を、1種以上の薬学的に許容される補助剤、賦形剤又は希釈剤と共に含んでなる放射性医薬組成物。
- 医療用に使用するための、請求項5乃至請求項7のいずれか1項記載の式(IIIa)の化合物又はその塩。
- 血管新生に関連した疾患又は病態のインビボ診断又はイメージングに使用するための、請求項5乃至請求項7のいずれか1項記載の式(IIIa)の化合物又はその塩。
- 放射性医薬品をヒト又は動物の身体に投与してヒト又は動物の身体の少なくとも一部分の画像を生成させるインビボイメージング法に用いられる放射性医薬品の製造における、請求項5乃至請求項7のいずれか1項記載の式(IIIa)の放射性標識コンジュゲート又はその塩の使用。
- 前記インビボイメージング法が、癌に関連した病態に対処するための薬剤によるヒト又は動物の身体の治療効果をモニターするためのものであり、上記投与と検出が繰り返し実施される、請求項11記載の使用。
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PT (1) | PT1791571E (ja) |
RU (1) | RU2396272C9 (ja) |
SI (1) | SI1791571T1 (ja) |
WO (1) | WO2006030291A2 (ja) |
ZA (1) | ZA200702700B (ja) |
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HU230901B1 (hu) * | 2001-07-10 | 2019-01-28 | Ge Healthcare Limited | Peptidalapú vegyületek és ezeket tartalmazó gyógyszerkészítmények |
EP1985624A3 (en) * | 2007-04-23 | 2008-12-24 | Bayer Schering Pharma Aktiengesellschaft | Single step method of radiofluorination of biologically active compounds or biomolecules |
AU2007294685B2 (en) * | 2006-09-15 | 2012-06-07 | Siemens Medical Solutions Usa, Inc. | Click chemistry-derived cyclopeptide derivatives as imaging agents for integrins |
US8247534B2 (en) | 2006-12-13 | 2012-08-21 | Ge Healthcare As | Synthesis of radiofluorinated peptide using microwave activation technology |
WO2008075966A2 (en) * | 2006-12-18 | 2008-06-26 | Ge Healthcare As | Synthesis of a radiofluorinated peptide using photolabile protecting groups |
EP2114464A2 (en) | 2006-12-28 | 2009-11-11 | GE Healthcare AS | Radiofluorination methods |
MX2009009291A (es) * | 2007-03-01 | 2009-12-14 | Bayer Schering Pharma Ag | Compuestos activos biologicamente marcados con fluoro-benzoilo 18f como agentes de diagnostico por imagenes asi como precursores de benzotriazol-1-iloxi-benzoilo, 2,5-dioxo-pirrolidin-1-iloxi benzoilo y trimetilamonio benzoilo. |
CN101854957B (zh) | 2007-09-10 | 2013-05-22 | 通用电气健康护理有限公司 | 放射性氟化方法 |
JP5399422B2 (ja) * | 2008-02-28 | 2014-01-29 | ジーイー・ヘルスケア・リミテッド | 市販の安価な化学薬品からのpeg−6成分の合成 |
GB0905438D0 (en) * | 2009-03-30 | 2009-05-13 | Ge Healthcare Ltd | Radiolabelling reagents and methods |
US8834839B2 (en) * | 2009-04-27 | 2014-09-16 | General Electric Company | Labeled molecular imaging agents, methods of making and methods of use |
GB0910013D0 (en) * | 2009-06-10 | 2009-07-22 | Ge Healthcare Ltd | PET imaging of fibogenesis |
US20120229804A1 (en) | 2009-12-21 | 2012-09-13 | Medi-Physics, Inc. | Borosilicate glassware and silica based qma's in 18f nucleophilic substitution: influence of aluminum, boron and silicon on the reactivity of the 18f- ion |
GB201013808D0 (en) * | 2010-08-18 | 2010-09-29 | Ge Healthcare Ltd | Peptide radiotracer compositions |
JP6231882B2 (ja) | 2010-12-01 | 2017-11-15 | ジーイー・ヘルスケア・リミテッド | 放射性コンジュゲーション方法 |
CN107753962A (zh) * | 2010-12-09 | 2018-03-06 | 通用电气健康护理有限公司 | 放射性示踪剂组合物 |
CA2822583A1 (en) * | 2010-12-21 | 2012-06-28 | Ge Healthcare Limited | Use of aniline in the radiostabilization of oxime ligation reactions |
US20130074758A1 (en) | 2011-09-26 | 2013-03-28 | Ocean Power Technologies, Inc. | Anchoring apparatus for wave energy converters |
WO2013048996A1 (en) | 2011-09-30 | 2013-04-04 | Ge Healthcare Limited | Method for the purification of a peptide-based imaging agent precursor |
WO2013048956A2 (en) * | 2011-09-30 | 2013-04-04 | Ge Healthcare Limited | Solid phase extraction separation method |
GB201202420D0 (en) * | 2012-02-13 | 2012-03-28 | Ge Healthcare Ltd | Radiotracer compositions |
GB201221266D0 (en) | 2012-11-27 | 2013-01-09 | Ge Healthcare Ltd | Aldehyde compositions |
GB201314936D0 (en) | 2013-08-21 | 2013-10-02 | Ge Healthcare Ltd | Radiolabelling method |
KR102205845B1 (ko) | 2013-10-28 | 2021-01-22 | 삼성전자주식회사 | 입자에 기반한 모델링 방법 및 장치 |
GB201322456D0 (en) | 2013-12-18 | 2014-02-05 | Ge Healthcare Ltd | Radiotracer compositions and methods |
EP3226884B1 (en) | 2014-12-04 | 2021-02-17 | GE Healthcare Limited | Method of removing acetaldehyde from radioactive pharmaceuticals |
GB201518918D0 (en) * | 2015-10-26 | 2015-12-09 | Norsk Medisinsk Syklotronsenter As And Uni I Oslo | Method |
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HU230901B1 (hu) * | 2001-07-10 | 2019-01-28 | Ge Healthcare Limited | Peptidalapú vegyületek és ezeket tartalmazó gyógyszerkészítmények |
GB0206750D0 (en) * | 2002-03-22 | 2002-05-01 | Amersham Plc | Radiofluorination methods |
GB0305704D0 (en) | 2003-03-13 | 2003-04-16 | Amersham Plc | Radiofluorination methods |
GB0317815D0 (en) * | 2003-07-30 | 2003-09-03 | Amersham Health As | Imaging agents |
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