4-Acetamidobenzenesulfonamide(121-61-9)
- Name: 4-Acetamidobenzenesulfonamide
- Synonyms:Acetanilide,4'-sulfamoyl- (6CI,7CI,8CI);4-Acetylaminobenzenesulfonamide;4'-Sulfamoylacetanilide;A-319;Acetylsulfanilamide;Benzenesulfonamide, 4-(acetylamino)-;Erytrin;N-(4-Sulfamoylphenyl)acetamide;N-[4-(Aminosulfonyl)phenyl]acetamide;N4-Acetsulfanilamide;N4-Acetylsulfanilamide;NSC 217;NSC 406839;Neotherapol;N'-Acetylsulphanilamide;Sulfanilamide-N4-acetate;p-(Acetylamino)benzenesulfonamide;p-Acetamidobenzenesulfonamide;p-Sulfamoylacetanilide;p-Sulfamylacetanilide;
- Molecular Formula:C8H10N2O3S
- Molecular Weight:214.245
- CAS Registry Number:121-61-9
- EINECS:204-486-7
- Melting Point:214-217 °C
- Water Solubility:slightly soluble in water
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:99.9%
Min. Order:1Kilogram
Supplier:Changzhou Rowan Biotechnology Co., Ltd. [
China (Mainland)]
CAS No.121-61-9 N-[4-(aminosulfonyl)phenyl]Acetamide
Assay:99% Package:According client's requirements Storage:Sealed and preserved Transportation:By sea/By air/By courier Application:Chemical raw materials
Min. Order:1Kilogram
Supplier:Hangzhou ZeErRui Chemical Co., Ltd. [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:98% Appearance:detailed see specifications Package:according to the clients requirement Storage:Store in dry, dark and ventilated place. Transportation:by sea or by air Application:It is an important raw material and intermediate used in Organic Synthesis, Pharmaceuticals, Agrochemicals and Dyestuff.
Min. Order:1Kilogram
Supplier:Dayang Chem (Hangzhou) Co.,Ltd. [
China (Mainland)]
CAS No.121-61-9 4'-sulfamoyl-acetanilid
Assay:99% Appearance:White powder Package:In aluminum foil bag or bottle Storage:Room Temperature Transportation:Shipmed by Air /sea Application:Organic Chemicals
Min. Order:100Gram
Supplier:HENAN NEW BLUE CHEMICAL CO.,LTD [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:99% Appearance:powder or liquid Package:according to customer requirements Storage:store in dry dark and ventilated place Transportation:By Sea/Air/Courier Application:It is an important raw material.
Min. Order:10Gram
Supplier:Zibo Hangyu Biotechnology Development Co., Ltd [
China (Mainland)]
CAS No.121-61-9 N-[4-(aminosulfonyl)phenyl]Acetamide
Assay:99% Appearance:Brown powder Package:According to customer requirements Storage:Sealed and preserved Transportation:Sea or Air Application:Medical research field
Min. Order:1Gram
Supplier:Qingdao Beluga Import and Export Co., LTD [
China (Mainland)]
CAS No.121-61-9 N-Acetylsulfanilamide CAS: 121-61-9
Assay:99% Appearance:White powder Package:Inside plastic outside Storage:Store at RT. Transportation:We ship goods via DHL, Fedex, UPS, TNT, China post, NL Post and other couriers, weight from 1g to 1000kg or even bulker Application:Use of 4-Acetamidobenzenesulfonamide N-Acetylsulfanilamide is a compound with potential anti-infective activity[1].
Min. Order:1Kilogram
Supplier:Hebei Nengqian Chemical Import and Export Co., LTD [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:99.00% Appearance:White Powder Package:25KG/Drum Storage:Preserve in tight, light-resistant containers Transportation:By Air& By Sea Application:Pharmaceutical
Min. Order:1Kilogram
Supplier:Golden Pharma Co., Limited [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay: 98%Min Appearance:Detailed in specifications Package:According to customer Storage:Store in dry, dark and ventilated place Transportation:By air or by sea Application:An important raw material and intermediate used in organic Synthesis, Pharmaceuticals
Min. Order:1Kilogram
Supplier:TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide factory price
Assay:99% Appearance:White to to off-white powder Package:25kg/drum Storage:room temperature Transportation:Express/Sea/Air Application:4-Acetamidobenzenesulfonamide has been used as an inhibitor of mitochondrial isoenzyme carbonic anhydrase V inhibitiors. Vullo, Daniela
Min. Order:1Kilogram
Supplier:Hangzhou Sartort Biopharma Co., Ltd [
China (Mainland)]
CAS No.121-61-9 N-[4-(aminosulfonyl)phenyl]Acetamide
Assay:99.0% Appearance:liquid Package:Grams, Kilograms Storage:Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials. Transportation:According to customer request Application:For R&D and commerical use
Min. Order:100Gram
Supplier:Chemlyte Solutions [
China (Mainland)]
CAS No.121-61-9 Acetamide,N-[4-(aminosulfonyl)phenyl]-
Assay:99% Appearance:White fine powder Package:according to the clients requirement Storage:Store in dry dark and ventilated place Transportation:Transportation by express, air, sea; port mainly to Qingdao / Tianjin / Shanghai, or according to customer needs to send different ports and aviation. Application:It is an important raw material.
Min. Order:1Kilogram
Supplier:Shandong Hanjiang Chemical Co., Ltd. [
China (Mainland)]
CAS No.121-61-9 N-[4-(aminosulfonyl)phenyl]Acetamide
Assay:99% Appearance:White Powder Package:25kg/drum, also according to the clients requirement Storage:Store In Dry, Cool And Ventilated Place Transportation:By Sea Or By Air Application:It is widely used as a thickener, emulsifier and stabilizer
Min. Order:1Kilogram
Supplier:EAST CHEMSOURCES LIMITED [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:99% Appearance:Powder Package:Glass bottle, customizable Storage:Store at room temperature Transportation:Air and sea transportation Application:Pharmaceutical Industry
Min. Order:1Kilogram
Supplier:Shanghai Wibson Biotechnology Co., Ltd. [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:鈮?8% Appearance:powder Package:BAG Storage:In cool ,dry place Transportation:Air or sea freight Application:for pharma use
Min. Order:1Kilogram
Supplier:Qingdao Chengyuan Kaisheng Industry and Trade Co., Ltd. [
China (Mainland)]
CAS No.121-61-9 Factory Sells4-Acetamidobenzenesulfonamide
Assay:98% Appearance:Detailed see specifications Package:Foil bag or Drum or Barrel or as customers requirements Storage:Store in dry dark and ventilated place Transportation:By courier/by air/by sea/by train Application:Pharmaceutical intermediates,custom synthesis and others
Min. Order:0
Supplier:Jiangsu Qianyu Molecular Technology Co., LTD. [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:98%min Package:5kg 25kg According to clients' requirement Storage:Store in dry, dark and ventilated place Application:Fine chemical industry
Min. Order:0Metric Ton
Supplier:Hangzhou Keyingchem Co.,Ltd [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:NLT 98% Appearance:White powder Storage:Room temperature
Min. Order:0
Supplier:Hangzhou Huarong Pharm Co., Ltd. [
China (Mainland)]
CAS No.121-61-9 Acetamide,N-[4-(aminosulfonyl)phenyl]-
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)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:HPLC鈮?8% Appearance:powder Storage:Sealed in dry,Room Temperature Transportation:by express or by sea Application:for pharma use
Min. Order:0
Supplier:Hangzhou Shanyi Biotechnology Co., Ltd. [
China (Mainland)]
CAS No.121-61-9 N-Acetylsulfanilamide
Assay:99.90% Appearance:solid or liquid Package:drum and bag Storage:in sealed air resistant place Transportation:by sea or air Application:for pharma use
Min. Order:0
Supplier:Kono Chem Co.,Ltd [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:99% Package:25kg/Drum Storage:100tons Transportation:By air/By sea Application:Chemical industry
Min. Order:0
Supplier:Hebei Mujin Biotechnology Co.,Ltd [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
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)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:98% Application:intermediate
Min. Order:0
Supplier:SAGECHEM LIMITED [
China (Mainland)]
CAS No.121-61-9 Acetamide,N-[4-(aminosulfonyl)phenyl]-
Assay:98% HPLC Package:1kg Application:pharmaceutical intermediates
Min. Order:0
Supplier:Hangzhou Dingyan Chem Co., Ltd [
China (Mainland)]
CAS No.121-61-9 Acetylsulfanilamide
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)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:99.0% min Appearance:Highest quality appearance Package:25kgs/drum锛?00kg/drum锛汭BC TANK Storage:Keep in dry and well ventilated warehouse, keep sealed Transportation:By air and by sea Application:Extremely good quality, widely used in Pharmaceutical Industry, Food Industry, agricultural industry etc.
Min. Order:1Kilogram
Supplier:Hangzhou Johoo Chemical Co., Ltd [
China (Mainland)]
CAS No.121-61-9 N-[4-(aminosulfonyl)phenyl]Acetamide
Assay:鈮?9.0% Appearance:White powder Package:25kg drum/bag Storage:Keep in dry and cool place Transportation:by Sea, air and express Application:銆?Use 1 銆? A nutritional supplement. One of the essential amino acids in the human body. Because the price is higher than DL-methionine and the effect is equal, DL-methionine is often used. 銆?Use
Min. Order:1Metric Ton
Supplier:KAISA GROUP INC [
United States]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:99% Package:box or opp package Storage:cool drum Transportation:air or sea Application:4-Acetamidobenzenesulfonamide
Min. Order:1Milligram
Supplier:weifang yangxu group co.,ltd [
China (Mainland)]
CAS No.121-61-9 Acetamide,N-[4-(aminosulfonyl)phenyl]-
Assay:99% Package:drum Transportation:By Sea/Air/DHL Application:Henan Wentao Chemical Product Co., Ltd.
Min. Order:0
Supplier:Henan Wentao Chemical Product Co., Ltd. [
China (Mainland)]
CAS No.121-61-9 Acetylsulfanilamide
Assay:99% Appearance:detailed see specifications Package:25kg/drum;200kg/drum Storage:Keep away of light, cool place Transportation:Sea/air/courier Application:Chemical synthesis
Min. Order:0
Supplier:Xiamen Hisunny Chemical Co.,Ltd [
China (Mainland)]
CAS No.121-61-9 Anilazine-d4
Assay:95%+ or 98%+ Appearance:solid Package:10mg/25mg/50mg/100mg/1000mg/5000mg Storage:short-term storage normal temperature. long-term storage 2-8 鈩?nbsp;Transportation:express and sea transport and air freight Application:for drug impurity for drug standards,for drug research and development銆侱rug impurity reference, drug standard, analytical chemistry, standard substance, organic chemical synthesis, chemical custo...
Min. Order:0
Supplier:Hubei Moxin Biotechnology Co., Ltd [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:99.90% 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:Xi`an Eastling Biotech Co., Ltd. [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:99 Appearance:powder, or liquid Package:Bottle, barrel, cargo, container, etc. Storage:Stored in room temperature, ventilated place Transportation:By air, ship, express, etc. Application:Pharmaceuticals, intermediates, APIs, custom synthesis, chemicals
Min. Order:0
Supplier:LEAP CHEM Co., Ltd. [
China (Mainland)]
CAS No.121-61-9 Acetylsulfanilamide
Assay:COA Appearance:COA Storage:in stock Application:MSDS/TDS
Min. Order:0
Supplier:Aecochem Corp. [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:98% Application:Compounds with potential anti infective activity
Min. Order:0
Supplier:Jilin Tianyun New Materials Co., Ltd [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:99% Application:API
Min. Order:0
Supplier:Wuhan Bright Chemical Co., Ltd. [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:99% Application:API
Min. Order:0
Supplier:Xian Changyue Biological Technology Co., Ltd. [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:99% Application:API
Min. Order:0
Supplier:DB BIOTECH CO., LTD [
China (Mainland)]
CAS No.121-61-9 Factory Supply 4'-sulphamoylacetanilide
Assay:99.9% Appearance:solid Package:drum Storage:keep in cool and dry place Transportation:by sea or by air Application:Intermediates and materials
Min. Order:1Gram
Supplier:Ality Chemical Corporation [
China (Mainland)]
CAS No.121-61-9 Pharmaceutical Grade CAS 121-61-9 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)]
CAS No.121-61-9 N-[4-(aminosulfonyl)phenyl]Acetamide
Assay:99% Appearance:liquid or powder Package:according to the clients requirement Storage:Dry and Cool Place Transportation:UPS FedEx ,DHL,EXPRESS LINE Application:healing drugs
Min. Order:1Gram
Supplier:Shandong Mopai Biotechnology Co., LTD [
China (Mainland)]
CAS No.121-61-9 N-[4-(aminosulfonyl)phenyl]Acetamide
Assay:99% Appearance:white powder Package:drum or based on customers' requirement Storage:normal temperature storage Transportation:by sea, by air Application:We have different specifications for different applications
Min. Order:1Metric Ton
Supplier:Bluecrystal chem-union [
China (Mainland)]
CAS No.121-61-9 N4-Acetylsulfanilamide
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)]
CAS No.121-61-9 N-[4-(aminosulfonyl)phenyl]-Acetamide
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)]
CAS No.121-61-9 N-[4-(aminosulfonyl)phenyl]Acetamide
Assay:99% Package:According to the customer request Transportation:According to the customer request Application:intermediate of Antimicrobial agent and Antioxidant
Min. Order:100Gram
Supplier:SHANGHAI SYSTEAM BIOCHEM CO., LTD [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:High quality, please feel free to contact us at any time Appearance:Please feel free to contact us, we will provide you with the best service Package:Please feel free to contact us at any time Storage:We have professional warehousing equipment, please rest assured Transportation:We have professional transportation capabilities Application:multi-purpose
Min. Order:0
Supplier:Changzhou Helios Biomedical Science and Technology Co.,LTD. [
China (Mainland)]
CAS No.121-61-9 Acetylsulfanilamide
Assay:98% Appearance:solid or liquid Package:According to customer鈥榮 requirement Storage:Keep in a cool & dry place Application:Fine Intermediate
Min. Order:0
Supplier:Xiamen AmoyChem Co.,Ltd [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:white powder Appearance:Keep it in dry,shady and cool place Package:Transit could be DHL,UPS,TNT,EMS,Fedex,and so on. For mass orders, it will be delivered by air or sea. For small order, please expect 3-7 days by UPS DHL EMS. For mass order, please allow 5-8 days... Storage:Pharma;Industry;Agricultural;chemical reaserch Transportation:Any port in China Application:25kg,50kg,180kg,200kg,250kg,1000kg锛宑ustomization
Min. Order:0
Supplier:Shandong Baimao Chemical Co., Ltd [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:HPLC鈮?8% Appearance:powder Storage:Sealed in dry,Room Temperature Transportation:by express or by sea Application:for pharma use
Min. Order:0
Supplier:Falcon Life Sciences Pvt. Ltd [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide CAS No.121-61-9
Assay:99.90% Appearance:solid or liquid Package:As customer's requested Storage:sealed in cool and dry place Transportation:by courier/air/sea Application:Pharma Intermediate
Min. Order:0
Supplier:Guangdong Juda Chemical Industrial Co.,Limited [
China (Mainland)]
CAS No.121-61-9 4-Acetamidobenzenesulfonamide
Assay:95% Appearance:White to light beige crystalline powder Application:For research use only.
Min. Order:0
Supplier:BOC Sciences [
United States]
CAS No.121-61-9 N-[4-(aminosulfonyl)phenyl]Acetamide
Assay:99% Application:N-[4-(aminosulfonyl)phenyl]Acetamide
Min. Order:0
Supplier:Wuhan 90000 Lithium Industry and Trade Co., Ltd. [
China (Mainland)]
CAS No.121-61-9 4-AcetaMidobenzenesulfonaMide
Assay:98% Package:According to the demand of customer Storage:Sealed, dry, microtherm , avoid light and smell. Transportation:by air or by sea Application:Organic synthesis
Min. Order:0
Supplier:Henan Allgreen Chemical Co.,Ltd [
China (Mainland)]
- Dayang Chem (Hangzhou) Co.,Ltd.

Other Product
- 93686-29-4/Vipera torva, ext.
- 921-40-4/3-fluoro-N-acetylneuraminic acid
- 50765-85-0/2-[2-(dimethylamino)ethyl]-5-methyl-2-(naphthalen-2-yl)hex-4-enenitrile
- 95566-39-5/Hexanedioic acid, polymer with 1,3-diisocyanato-2-methylbenzene, 2,4-diisocyanato-1-methylbenzene, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,3-isobenzofurandione, 2,2'-oxybis[ethanol] and 1,2-propanediol
- 1928-37-6/2,4,5-T-METHYL ESTER
- 3473-51-6/17-oxoandrost-5-en-3-yl carbamimidoselenoate 4-methylbenzenesulfonate (1:1)
- 30562-34-6/Geldanamycin
- 56092-63-8/verruculotoxin
- 26327-69-5/1-[2-(2-methylphenoxy)phenoxy]-3-(pyrrolidin-1-yl)propan-2-ol hydrochloride (1:1)
- 174657-49-9/2-[2-(4-chlorophenyl)-3-phenyl-4H-pyrrolo[1,2-a]benzimidazol-4-yl]-N,N-diethylethanamine dihydrochloride
- 5448-59-9/hexyl 2-methylpentanoate
- 68606-05-3/Vegetable oil fatty acids, 2,2,4-trimethyl-1,3-pentanediol, trimethylolethane, 3-hydroxy-2-hydroxymethylpropanoic acid, phthalic anhydride, toluene diisocyanate resin
- 129679-49-8/1,4-Ethano-1H,3H-furo(3,4-c)furan-3,6(4H)-dione, dihydro-
- 4084-27-9/3-DEOXYGLUCOSONE
- 31093-47-7/2-decylbenzenesulfonic acid
- 93982-40-2/1-[3-allyloxy-2-hydroxypropyl]biguanide
- 32200-63-8/decaboran(14)yl-
- 89-13-4/2-ethylhexyl 8-methylnonyl phthalate
- 34970-23-5/6,10-Methano-1H-cyclooct[e]indene,3-[(1R)-1,- 5-dimethylhexyl]tetradecahydro-3a,6,7- trimethyl-,(3R,3aR,5aS,6R,10S,11aR,11bS)-
- 121-61-9/4-Acetamidobenzenesulfonamide
- 102088-39-1/4-SULFOCALIX[6]ARENE
- 105271-21-4/1-[3-methoxy-4-(2-methyl-4-oxoquinazolin-3(4H)-yl)phenyl]-3-(4-methylphenyl)thiourea
- 105-29-3/3-Methyl-2-penten-4-yn-1-ol
- 57245-68-8/4-(morpholin-2-ylmethyl)-2H-1,4-benzoxazin-3(4H)-one ethanedioate
- 284681-80-7/2-[(3-chlorophenyl)sulfonyl]-6-(1-methylpropoxy)pyrimidin-4(3H)-one
- 68683-20-5/4-(isopropyl)cyclohexadiene-1-ethyl formate
- 13792-24-0/Methylcarbamic acid 4-(cyanomethyl)phenyl ester
- 356092-30-3/[2-(1 H-INDOL-3-YL)-ETHYL]-(2-METHYL-BENZYL)-AMINE
- 60825-26-5/TRICLOPYR METHYL ESTERSUFFIX ADDED TO CAS TO DIFFERENTIATE FROM NON-DEUTERATED/DERIVATIZED COMPOUND.
- 147-48-8/calcium [2S-cis(2alpha,5alpha,6beta)]-bis[3,3-dimethyl-7-oxo-6-[(phenoxyacetyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate]