2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL(269409-97-4)
- Name: 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
- Synonyms:2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2yl);2-Hydroxybenzeneboronic acid, pinacol ester;2-Hydroxyphenylboronic acid pinacol ester;2-Hydroxyphenylboronic acid, pinacol ester;
- Molecular Formula:C12H17BO3
- Molecular Weight:220.076
- CAS Registry Number:269409-97-4
- EINECS:
- Melting Point:
- Water Solubility:Insoluble in water
CAS No.269409-97-4 2-Hydroxyphenylboronic acid pinacol ester
Assay:95%, 99% Appearance:detailed see specifications Package:according to the clients requirement Storage:Store in dry, dark and ventilated place. Transportation:by air or by sea Application:Multipurpose intermediate
Min. Order:1Kilogram
Supplier:Dayang Chem (Hangzhou) Co.,Ltd. [ China (Mainland)]
Assessed
SupplierTel:+86-571-88938639
Address:9/F, Unit 2 Changdi Torch Building, 259# WenSan Road, Xihu District, Hangzhou City 310012, P.R.China
- Contact Suppliers
CAS No.269409-97-4 big discount 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
Assay:99% min Appearance:white powder Package:as you requested Storage:RT Transportation:Shipment as non- dangerous chemicals by sea or air Application:Widely used in Suzuki coupling chemistry.6
Min. Order:1Metric Ton
Supplier:HENAN NEW BLUE CHEMICAL CO.,LTD [ China (Mainland)]
Assessed
SupplierTel:86-371-55170693/55170694
Address:Zhengzhou International Trade New Territory,Jinshui District,Zhengzhou ,China
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol
Assay:99%min. Appearance:white powder Package:1kg/Export worthy packing; 25kg/drum Storage:In well-closed container, protected from light and in cool & dry place. Transportation:By Air, By Sea, By courier (door to door, DHL/FedEx/UPS) Application:R&D and production for pharmaceuticals and chemicals
Min. Order:1Gram
Supplier:LIDE PHARMACEUTICALS LIMITED [ China (Mainland)]
Assessed
SupplierTel:+86-25-58409506
Address:11F, Building A1, No.288 North Zhongshan Road, Gulou District, Nanjing,210003, P.R.China.
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL 269409-97-4
Assay:99% Appearance:Light yellow transparent liquid Package:drums Storage:Sealed\dry Transportation:Sea, air and courier Application:intermediate
Min. Order:1Gram
Supplier:Shanghai Minstar Chemical Co., Ltd [ China (Mainland)]
Assessed
SupplierTel:86-21-18019205509
Address:BUILDING 8, NO.1098, CHUANSHA ROAD, SHANGHAI, CHINA
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
Assay:99% Package:according to customer requirements Transportation:By Sea/Air/Courier Application:It is an important raw material.
Min. Order:10Gram
Supplier:Zibo Hangyu Biotechnology Development Co., Ltd [ China (Mainland)]
Assessed
SupplierTel:86-15965530500
Address:Room1701, Tianxing Building,Licheng district, jinan, Shandong, China
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
Assay:99% Package:According client's requirements Transportation:by sea/by air/by courier Application:Chemical products
Min. Order:1Kilogram
Supplier:Hangzhou ZeErRui Chemical Co., Ltd. [ China (Mainland)]
Assessed
SupplierTel:+86-571-82512721
Address:No 317,Jingling Road,Guali Town,Xiaoshan District
- Contact Suppliers
CAS No.269409-97-4 Featured products 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
Assay:98.0%min Appearance:pale yellow liquid Package:according to the clients requirement Storage:Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Transportation:by sea or by air Application:intermediate
Min. Order:100Gram
Supplier:Chemlyte Solutions [ China (Mainland)]
Assessed
SupplierTel:+86-189 8945 5137
Address:Jian Qiao Community, 789 Shenhua Road, Xihu District, Hangzhou, China, 310000
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol
Assay:98% Package:According to customer requirements Transportation:by sea or by air Application:chemical synthesis
Min. Order:25Gram
Supplier:Shanghai Scochem Technology Co., Ltd. [ China (Mainland)]
Assessed
SupplierTel:021-33758897
Address:3rd Building, Hua Yi Road 76 Zhangjiang Pudong New Area Shanghai, China
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
Assay:99% Appearance:pale yellow to brown liquid Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Storage:Stored in cool, dry and ventilation place; Away from fire and heat Transportation:by courier door to door or by sea Application:Widely used in Suzuki coupling chemistry.6
Min. Order:1Kilogram
Supplier:HANGZHOU YUNUO CHEMICAL CO.,LTD [ China (Mainland)]
Assessed
SupplierTel:0571-83715115
Address:hangzhou
- Contact Suppliers
CAS No.269409-97-4 2-Hydroxyphenylboronic acid, pinacol ester
Assay:0.98 Appearance:Off white to slight yellow solid Package:1L 5L 10L 25L bottle Storage:Stored in shaded, cool and dry places Transportation:Handle with cares to avoid damaging the packages. Protect them from sunshine or rain. We can send by Fedex, by ship or by plane according to international rules. Application:pharma intermediate
Min. Order:0
Supplier:Antimex Chemical Limied [ China (Mainland)]
Assessed
SupplierTel:0086-21-50563169
Address:Room1027,No.Jinyu Road,Pudong
- Contact Suppliers
CAS No.269409-97-4 2-Hydroxyphenylboronic acid, pinacol ester
Assay:98%,99% Appearance:refer to COA Package:According to the clients requirement Storage:Store in dry, cool and ventilated place Transportation:We can ship goods to you by courier(like FedEx/TNT), by air, by sea Application:Liquid crystal intermediate
Min. Order:0
Supplier:Hangzhou Ocean Chemical Co., Ltd. [ China (Mainland)]
Assessed
SupplierTel:+86-571-88025872, 28272092, 28272096
Address:Room 623 ,Building No 1 , COFCO Radius Commercial Center Xiwen Road, Xiacheng District, Hangzhou, Zhejiang Province, China
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-TetraMethyl-1,3,2-dioxaborolan-2-yl)phenol
Assay:鈮?5% Appearance:To be subject to the object Package:Customized Transportation:Air Application:pharmaceutical intermediates
Min. Order:0
Supplier:Hangzhou Dingyan Chem Co., Ltd [ China (Mainland)]
Assessed
SupplierTel:86-571-87157530-8002
Address:RM.1118,NO.1 Building, Baiyun Tower,Jianggan Area, Hangzhou city, China,310004
- Contact Suppliers
CAS No.269409-97-4 2-Hydroxyphenylboronic acid pinacol ester
Assay:98% Package:25kg/drum,or as per customers'demand Transportation:air,sea,courier Application:API,Pharmaceutical intermediates
Min. Order:0
Supplier:GIHI CHEMICALS CO.,LIMITED [ China (Mainland)]
Assessed
SupplierTel:+86-571-86217390
Address:No.567 Dengcai Street,Sandun,Westlake District,Hangzhou310030,Zhejiang,China.
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
Assay:鈮?9% Application:Chemical intermediate
Min. Order:0
Supplier:HANGZHOU TIANYE CHEMICALS CO., LTD. [ China (Mainland)]
Assessed
SupplierTel:0571-85083592
Address:1208# HuaCe Building-B,Wuchanggang Road,XIHU District,Hangzhou City,Zhejiang Province ,China
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
Assay:99% Application:Medical research field
Min. Order:0
Supplier:Qingdao Beluga Import and Export Co., LTD [ China (Mainland)]
Assessed
SupplierTel:+8613854236000
Address:qingdao
- Contact Suppliers
CAS No.269409-97-4 CAS NO.:269409-97-4
Assay:99% Appearance:white powder Package:drum Storage:Room temperature Transportation:By Sea/Air/DHL Application:Pharmaceutical intermediates
Min. Order:1Gram
Supplier:Henan Wentao Chemical Product Co., Ltd. [ China (Mainland)]
Premium
SupplierTel:+86-370-2722992
Address:32 Room, 5th Floor, Building 11, No. 6 Yinxing Road, High-tech Industrial Development Zone, Zhengzhou City, Henan Province
- Contact Suppliers
CAS No.269409-97-4 Phenol,2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-
Assay:98%min Appearance:Off-white to light yellow powder Package:According to the clients requirement. Storage:Keep in cool place. Application:Pharmaceutical intermediates
Min. Order:0
Supplier:Hangzhou J&H Chemical Co., Ltd. [ China (Mainland)]
Premium
SupplierTel:+86-571-87396432
Address:No.200 Zhenhua Rd.Xihu Industrial Park, Hangzhou 310030, China
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol CAS 269409-97-4
Assay:99% Package:drum Storage:Sealed, stored in a cool, ventilated place Transportation:By air/sea Application:Pharmaceutical
Min. Order:0
Supplier:Wuxi TAA Chemical Industry Co.,LTD. [ China (Mainland)]
Premium
SupplierTel:18168326835
Address:2202 Scientific Research Business Center, Lihu Road, Wuxi 214128 China
- Contact Suppliers
CAS No.269409-97-4 2-Hydroxyphenylboronic acid pinacol ester
Assay:99% Appearance:white powder Package:25kg,50kg,180kg,200kg,250kg,1000kg锛宑ustomization Storage:Keep it in dry,shady and cool place Transportation:by express or by sea Application:Pharma;Industry;Agricultural;chemical reaserch
Min. Order:0
Supplier:Wuhan Circle Star Chem-medical Technology co.,Ltd. [ China (Mainland)]
Premium
SupplierTel:+86-13437180835
Address:Room 02-31, 13 / F, Building 9, Guannan Fuxing Medical Park Phase II, No.58, Guanggu Avenue, East Lake New Technology Development Zone, Wuhan, Hubei, China (Wuhan Area, Free Trade Zone)
- Contact Suppliers
CAS No.269409-97-4 2-Hydroxyphenylboronic acid pinacol ester cas 269409-97-4
Assay:99%min Appearance:white crystalline powder Package:25KG drum Storage:Store in dry, dark and ventilated place Transportation:by air, by sea, by express Application:intermediate
Min. Order:0
Supplier:Hangzhou Fandachem Co.,Ltd [ China (Mainland)]
Premium
SupplierTel:+86-571-28800458
Address:Room 5010, No.9 YanAn Road,Hangzhou,Zhejiang,China
- Contact Suppliers
CAS No.269409-97-4 Pharmaceutical Grade CAS 269409-97-4 with competitive price
Assay:99% Appearance:White powder Package: [Packaging]20mg, 50mg,100mg,1g,10g,100g,according to customers' requirements Storage: should be stored in a well-closed container at low temperature, keep away from moisture, heat and light. Transportation:1. Samples 1kg-10kg are shipped by international express. 2. 50kg-100kg of goods are transported by dedicated line logistics. 3. Cargo 100kg-1ton is transported by dedicated line logistics. Application:Chemical raw materials, pharmaceutical intermediates, cosmetic raw materials, etc.
Min. Order:1Kilogram
Supplier:Zhuozhou Wenxi import and Export Co., Ltd [ China (Mainland)]
Premium
SupplierTel:+86-13111626072
Address:Room 1710, Baoxin International Phase I, 19 Guanyun East Road, Zhuozhou, Hebei
- Contact Suppliers
CAS No.269409-97-4 2-Hydroxyphenylboronic acid pinacol ester 99%
Assay:99% Appearance:A transparent liquid Package:0.5kgs/bottle 1.0kgs/bottle 2.0kgs/bottle Storage:2-8掳C Transportation:Ais,sea,lanf transport Application:Widely used in Suzuki coupling chemistry.6
Min. Order:1Kilogram
Supplier:Baoji Guokang Healthchem co.,ltd [ China (Mainland)]
Premium
SupplierTel:86-917-3909592
Address:China
- Contact Suppliers
CAS No.269409-97-4 2-Hydroxyphenylboronic acid, pinacol ester 269409-97-4
Assay:98%min Appearance:white or light yellow crystalline powder Package:As customer request Storage:Store in a cool,dry place and keep away from direct strong light Transportation:By Sea/Air/Courier Application:Used for research and industrial manufacture.
Min. Order:0Metric Ton
Supplier:Triumph International Development Limilted [ China (Mainland)]
Premium
SupplierTel:+86-536-7971999
Address:Yinhai Road,Shouguang
- Contact Suppliers
CAS No.269409-97-4 (3-hydroxy-2,3-dimethylbutan-2-yl)oxy-(2-hydroxyphenyl)borinic acid
Assay:97% Appearance:Powder or liquid Package:According to customer Storage:Store in a tightly closed container, in a cool and dry place. Transportation:Fedex,DHL,TNT,BY SEA and BY AIR Application:Medicinal Chemistry Biomedicine Pharmaceutical intermediates Chemistry experiment Biological experiments Chemical reagent For R&D use only.
Min. Order:10Milligram
Supplier:Amadis Chemical Co., Ltd. [ China (Mainland)]
Premium
SupplierTel:86-571-89925085
Address:Watts Cosine.No.166.Xiangmao Road.
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-phenol
Assay:99% Haccp,,Halal,SC US FDA GMP ISO14001 Appearance:As per Certificate of analysis and our TDS, MSDS Package:Export standard and according to the clients requirement Storage:Store in dry, dark and ventilated place;ISO / Kosher /GMP licence commercial bulk capacity factory in China Transportation:By AIR or by SEA GMP licence / US-FDA,South Korea-KFDA Application:It is an important raw material and intermediate for chemical industry.
Min. Order:5Kiloliter
Supplier:Chemwill Asia Co., Ltd. [ China (Mainland)]
Premium
SupplierTel:021-51086038
Address:High-Tech Industrial park,Chemical Economical Development Zone,Xuzhou, Jiangsu-Province, P.R.China
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
Assay:99.0% Appearance:Clear, colorless liquid Package:according to your requirement Storage:Store in a dry, dark and ventilated place Transportation:by air/by sea /by train Application:lt is an important raw material and intermediate used in Organic Synthesis, Pharmaceuticals, Agrochemicals and Dyestuff.
Min. Order:1Kilogram
Supplier:Suzhou Senfeida Chemical Co., Ltd [ China (Mainland)]
Premium
SupplierTel:186-624-33356
Address:Hushuguan Economic and Technological Development Zone, Suzhou High-tech Zone
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol
Assay:98% Appearance:White or off white powder Package:According to the demand of customer Storage:Sealed, dry, microtherm , avoid light and smell Transportation:by air or by sea Application:Pharmaceutical intermediates
Min. Order:1Kilogram
Supplier:Henan Allgreen Chemical Co.,Ltd [ China (Mainland)]
Premium
SupplierTel:+86-0371-87507775
Address:No 260 Dongming Road,Jinshui District
- Contact Suppliers
CAS No.269409-97-4 Acmec 2-Hydroxyphenylboronic acid pinacol ester 25g
Assay:95% Appearance:See the datasheet Package:25g Storage:RT,Dark,Dry Transportation:By Express, Air and Road Application:Analytical reagent, biochemical reagent, standard
Min. Order:1bottle
Supplier:Shanghai Acmec Biochemical Technology Co., Ltd. [ China (Mainland)]
Premium
SupplierTel:86-400-9004166
Address:459 Nanzhong Road, Nanqiao, Xingtang County, Fengxian Districtct, Shanghai
- Contact Suppliers
CAS No.269409-97-4 2-Hydroxyphenylboronic acid pinacol ester
Assay:99% Appearance:White to light yellow to light orange fluffy powder Package:according to your requirement Storage:White to light yellow to light orange fluffy powder Transportation:by air /by train/by sea Application:lab
Min. Order:1Kilogram
Supplier:Jiangsu Xinsu New Materials Co., Ltd. [ China (Mainland)]
Premium
SupplierTel:86-139-14000513
Address:High speed Railway New City, Xiangcheng District, Suzhou City, Jiangsu Province
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
Assay:97% Appearance:Powder Package:according to the clients requirement Storage:Room temperature with sealed well Transportation:by sea or by air Application:Use as primary and secondary intermediate
Min. Order:0
Supplier:BOC Sciences [ United States]
Premium
SupplierTel:1-631-485-4226
Address:Ramsey Road
- Contact Suppliers
CAS No.269409-97-4 269409-97-4
Assay:98.5% Appearance:white/off-white or light yellow Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Storage:Store in cool and dry place, keep away from strong light and heat. Transportation:by courier, by air, by sea Application:This product can be used in food/pharmaceutical/cosmetical industry
Min. Order:0
Supplier:Suzhou Health Chemicals Co., Ltd. [ China (Mainland)]
Premium
SupplierTel:13776257979
Address:No. 338, Jingang Avenue,
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL 269409-97-4
Assay:95+% Appearance:solid or liquid Package:Foil bag; Drum; Plastic bottle Storage:in sealed air resistant place Transportation:by sea or air Application:Pharma;Industry;Agricultural
Min. Order:0
Supplier:Hunan Russell Chemicals Technology Co.,Ltd [ China (Mainland)]
Premium
SupplierTel:0086-182-2994-0868
Address:Buiding4,Lugu Enterprise Plaza, Yuelu Distric
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
Appearance:95%+ Package:R&D,Pilot run Transportation:per client require
Min. Order:0
Supplier:Hunan chemfish Pharmaceutical co.,Ltd [ China (Mainland)]
Premium
SupplierTel:0731-85567275
Address:Innovation center , Meixi Lake ,Yuelu district ,Changsha City, Hunan Province , China
- Contact Suppliers
CAS No.269409-97-4 2-hydroxyphenylboronic acid pinacol ester cas no. 269409-97-4 98%
Assay:0.98 Package:Grams, Kilograms Transportation:According to customer request Application:For R&D
Min. Order:0
Supplier:Win-Win chemical Co.Ltd [ China (Mainland)]
Premium
SupplierTel:0086-577-64498589
Address:6F, No. 396 Xingping Road, Longwan Industrial Zone, Wenzhou City, Zhejiang, 325000 P.R.China
- Contact Suppliers
CAS No.269409-97-4 2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
Assay:97%
Supplier:SHANDONG BENRITE NEW CHEMICAL MATERIALS CO.,LTD. [ China (Mainland)]
Premium
SupplierTel:86-0533-2866658
Address: Zibo Science and Technology Industrial Park, Zibo City,Shandong Province
- Contact Suppliers
CAS No.269409-97-4 2-Hydroxyphenylboronic acid, pinacol ester
Assay:97% Application:important raw material
Min. Order:0
Supplier:AllyChem Co., Ltd., Dalian, China锛圔BChem锛?/a> [ China (Mainland)]
Premium
SupplierTel:+86-411-62313318/62313328
Address:No.5 of Jinbin Road, Jinzhou New District, Dalian City, Liaoning Province, P.R.China
- Contact Suppliers
- AllyChem Co., Ltd., Dalian, China(BBChem)
Other Product
- 5683-31-8/3-(TRIMETHYLSILYL)PROPIOLIC ACID
- 59376-64-6/TRANS-3-(TRIMETHYLSILYL)ALLYL ALCOHOL
- 6229-00-1/(TRIPHENYLSILYL)ACETYLENE 98
- 74974-60-0/GALLIUM(III) TRIFLUOROMETHANESULFONATE
- 80278-67-7/ISOQUINOLINE-5-CARBALDEHYDE
- 53912-80-4/(S)-(-)-1-BENZYL-2-PYRROLIDINEMETHANOL
- 188264-84-8/(S,S)-(+)-N,N'-BIS(3,5-DI-TERT-BUTYLSALICYLIDENE)-1,2-CYCLOHEXANEDIAMINO-COBALT(II)
- 6404-29-1/BOC-6-AMINOHEXANOIC ACID
- 96384-68-8/BROMOMETHYL OCTYL ETHER
- 142356-33-0/6-(BOC-AMINO)-HEXYL BROMIDE
- 124751-19-5/6-O-(TERT-BUTYLDIMETHYLSILYL)-D-GALACTAL
- 216959-34-1/ETHYL N-(TERT-BUTOXYCARBONYL)OXAMATE
- 52093-29-5/GADOLINIUM (III) TRIFLUOROMETHANESULFONATE
- 49540-00-3/MERCURY(II) TRIFLUOROMETHANESULFONATE
- 54125-02-9/1-METHOXY-3-TRIMETHYLSILOXY-1,3-BUTADIENE
- 52093-28-4/SAMARIUM(III) TRIFLUOROMETHANESULFONATE
- 269409-97-4/2-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
- 6651-43-0/1-TRIMETHYLSILOXY-1,3-BUTADIENE
- 22737-36-6/O-(TRIMETHYLSILYL)HYDROXYLAMINE
- 1074-99-3/4,6-Dimethyl-3-nitropyridine
- 116228-38-7/1-BENZOYL-4-IODOPYRAZOL
- 405173-97-9/2-(2-Chloroethyl)benzimidazole
- 93483-94-4/2-(3-BROMOPROPYL)BENZIMIDAZOLE
- 109635-38-3/1-(4-Chlorophenylmethyl)-2-aminobenzimidazole
- 6398-87-4/3-(1,3-Dioxolan-2-yl)aniline
- 224641-82-1/Benzaldehyde, 3-hydroxy-2,4,6-triiodo-
- 828270-62-8/4-Fluoro-2-methyl-1-(methylsulphonyl)benzene
- 40861-08-3/N,N-DI(4-CHLOROBENZYL)HYDROXYLAMINE
- 56962-01-7/Phenol, 3-amino-2-chloro-
- 98421-25-1/ETHYL QUINOLINE-5-CARBOXYLATE