Tetrachloropropene(10436-39-2)
- Name: Tetrachloropropene
- Synonyms:Propene,1,1,2,3-tetrachloro- (6CI,7CI,8CI); 1,1,2,3-Tetrachloro-1-propene;1,1,2,3-Tetrachloropropene; 2,3,3-Trichloroallyl chloride; HCO 1230; HCO 1230xa
- Molecular Formula:C3H2 Cl4
- Molecular Weight:179.861
- CAS Registry Number:10436-39-2
- EINECS:
- Melting Point:29-31°C(lit.)
- Water Solubility:MISCIBLE
CAS No.10436-39-2 Tetrachloropropene
Assay:98%Min Appearance:detailed in specifications Package:according to the clients requirement Storage:Store in dry, dark and ventilated place. Transportation:by air or by ocean shipping Application:An important raw material and intermediate used in Organic Synthesis, Pharmaceuticals
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.10436-39-2 Tetrachloropropene
Assay:99% Appearance:powder Package:according to your need for packing Storage:dry Transportation:sea,air,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.10436-39-2 Tetrachloropropene
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)]
Assessed
SupplierTel:86-15965530500
Address:Room1701, Tianxing Building,Licheng district, jinan, Shandong, China
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene
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.10436-39-2 Tetrachloropropene CAS:10436-39-2
Assay:99% Appearance:Brown powder Package:According to customer requirements Storage:Avoid light, ventilation and shade Transportation:Sea or Air Application:It is an important raw material and intermediate
Min. Order:1Gram
Supplier:Qingdao Beluga Import and Export Co., LTD [ China (Mainland)]
Assessed
SupplierTel:+8613854236000
Address:qingdao
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene CAS:10436-39-2
Assay:99% Appearance:Liquid Package:In plastic outside weave or according to your request Storage:Refrigerator Transportation:We ship goods via DHL, Fedex, UPS, TNT, China post, NL Post and other couriers, weight from 10g to 1000kg or even bulker.? Application:Used in the synthesis of heat-resistant plastics, as an intermediate for the manufacture of 1, 2-dichloropropylene.
Min. Order:1Kilogram
Supplier:Hebei Nengqian Chemical Import and Export Co., LTD [ China (Mainland)]
Assessed
SupplierTel:+86 13910575315
Address:Congtai District, La Defense North
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene
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)]
Assessed
SupplierTel:18958062155
Address:1
- Contact Suppliers
CAS No.10436-39-2 10436-39-2 1,1,2,3-Tetrachloropropene CAS NO.10436-39-2
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)]
Assessed
SupplierTel:+86 18369939125
Address:No.25A Qilu Industrial Park
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene
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)]
Assessed
SupplierTel:+8616712853577-571-639871
Address:No. 22, Lane 121, Yucai Road, Songyin, Tinglin Town, Jinshan District, Shanghai (Songyin Economic Community)
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene CAS NO.10436-39-2
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)]
Assessed
SupplierTel:15053231572
Address:No.1581-12,Jinshui Road, Licang, Qingdao,China
- Contact Suppliers
CAS No.10436-39-2 Quality Manufacturer Tetrachloropropene
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)]
Assessed
SupplierTel:+86 18913485172
Address:No.2-812, Zhongyin Plaza,Yunlong District
- Contact Suppliers
CAS No.10436-39-2 1,1,2,3-Tetrachloropropene
Assay:99% Appearance:Powder Package:Aluminium Foil Bag or Fluorinated Bottle Storage:normal temperature preservation Transportation:By Air/Sea/Express Application:Organic Synthesis
Min. Order:0
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.10436-39-2 1,1,2,3-Tetrachloropropene
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.10436-39-2 Tetrachloropropene
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)]
Assessed
SupplierTel:s-086-18093761022
Address:Guodu Development Building
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene
Assay:99% Appearance:White powder Package:200/Kilograms Storage:Sealed and preserved Transportation:By sea Application:Pharmaceutical Industry
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.10436-39-2 1,1,2,3-Tetrachloropropene
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.10436-39-2 1,1,2,3-Tetrachloropropene
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)]
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.10436-39-2 1,1,2,3-Tetrachloropropene
Assay:99% Appearance:white power Package:as your requirement Storage:Keep it in dry,shady and cool place Transportation:SEA OR AIR Application:Pharma;Industry;Agricultural;chemical reaserch
Min. Order:0
Supplier:Wuhan ZeShanCheng Biomedical Technology Co., Ltd. [ China (Mainland)]
Premium
SupplierTel:+86 17786425391
Address:No. 399, lihua road, dongxihu district, wuhan city (17)
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene
Assay:99%+ Appearance:white powder Package:25kg,50kg,180kg,200kg,250kg,2190kg锛宑ustomization Storage:Keep it in dry,shady and cool place Transportation: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... 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.10436-39-2 Tetrachloropropene
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)]
Premium
SupplierTel:+86-156-91766041
Address:No. 201, Unit 4, Building 9, Hongqi Community, Tanjia Street, Weiyang District, Xi 'an, Shaanxi
- Contact Suppliers
CAS No.10436-39-2 1-Propene,1,1,2,3-tetrachloro-
Assay:99% Appearance:see detailed specifications Package:bottle/drum Storage:keep in dry and cool condition Transportation:By Courier/Air/Sea Application:pharmaceutical use,food use,Raw materials for the synthesis of new sweeteners and certain chiral pharmaceutical intermediates.
Min. Order:0
Supplier:Hebei Mojin Biotechnology Co.,Ltd [ China (Mainland)]
Premium
SupplierTel:13231137666
Address:room 1401,A building,Enjoy city,shijiazhuang city,hebei province,China
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene
Assay:99% Application:API
Min. Order:0
Supplier:WLP INGREDIENT INC [ China (Mainland)]
Premium
SupplierTel:86-29-88071646
Address:xian
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene
Assay:99% Application:API
Min. Order:0
Supplier:Xian Changyue Biological Technology Co., Ltd. [ China (Mainland)]
Premium
SupplierTel:+86-029-62886900
Address:Keji Road NO.70
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene
Assay:99% Application:API
Min. Order:0
Supplier:Wuhan Bright Chemical Co., Ltd. [ China (Mainland)]
Premium
SupplierTel:+86-27-85804899
Address:Rm 9FC11,Caishen plaza,Hankou trainstation Wuhan,CN
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene
Assay:99% Application:API
Min. Order:0
Supplier:Hebei Muhuang Technology Co., Ltd [ China (Mainland)]
Premium
SupplierTel:+8618332173750锛?8613191862208
Address:鐭冲搴勬ˉ瑗垮尯浠佸拰鍢夊洯3鍙锋ゼ1鍗曞厓702
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene
Assay:99% Application:API
Min. Order:0
Supplier:DB BIOTECH CO., LTD [ China (Mainland)]
Premium
SupplierTel:86--1829 2989 553
Address:No.99 Road, Xi'an, China
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene
Assay:98% Appearance:White or off-white Solid Package:According to the demand of customer Storage:Sealed, dry, microtherm , avoid light and smell. Transportation:Tetrachloropropene Basic information Product Name: Tetrachloropropene Synonyms: Tetrachloropropene;1,1,2,3-Tetrachloropropene;1,1,2,3-tetrachloro-1-propen;1,1,2,3-tetrachloro-1-propene;1,1,2,3-tetra Application:Tetrachloropropene Basic information Product Name: Tetrachloropropene Synonyms: Tetrachloropropene;1,1,2,3-Tetrachloropropene;1,1,2,3-tetrachloro-1-propen;1,1,2,3-tetrachloro-1-propene;1,1,2,3-tetra
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.10436-39-2 Pharmaceutical Grade CAS 10436-39-2 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.10436-39-2 Tetrachloropropene CAS NO.10436-39-2
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)]
Premium
SupplierTel:+86-15965530500
Address:shandong
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene CAS NO.10436-39-2
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)]
Premium
SupplierTel:+86-1895157
Address:Liang Xi Qu
- Contact Suppliers
CAS No.10436-39-2 1,1,2,3-Tetrachloropropene
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.10436-39-2 Tetrachloropropene
Assay:99% Appearance:Powder Package:Box,Carton,Vials and so on Storage:Cool and dry place Transportation:Air and sea transportation Application:Pharmaceutical Industry
Min. Order:1Kilogram
Supplier:Qiaoxi District Yitlan electronic business Firm [ China (Mainland)]
Premium
SupplierTel:86-190-33111208
Address:Hebei shijiazhuang
- Contact Suppliers
CAS No.10436-39-2 Factory Supply 1,1,2,3-Tetrachloropropene
Assay:99% Appearance:powder or granule ( refer to COA) Package:25kgs/fiber drum Storage:Keep in a cool & dry place Transportation:by sea or by air Application:Librium, Valium
Min. Order:0
Supplier:Ality Chemical Corporation [ China (Mainland)]
Premium
SupplierTel:86-(0)592-8883942
Address:Fine chemical industry park, Nantong,Jiangsu
- Contact Suppliers
CAS No.10436-39-2 Tetrachloropropene
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)]
Premium
SupplierTel:+86-18961100976
Address:No. 271 Building B, No. 98 Ximen Da Jie, Jintan District,Changzhou city,Jiangsu,China.
- Contact Suppliers
CAS No.10436-39-2 1,1,2,3-tetrachloropropene 10436-39-2
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.10436-39-2 1,1,2,3-tetrachloropropene
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.10436-39-2 Tetrachloropropene CAS NO.10436-39-2
Assay:99% Application:Tetrachloropropene CAS NO.10436-39-2
Min. Order:0
Supplier:Wuhan 90000 Lithium Industry and Trade Co., Ltd. [ China (Mainland)]
Premium
SupplierTel:+86-027-83214688
Address:666 Gaoxin Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province, China
- Contact Suppliers
Other Product
- 100991-81-9/3-[(6-deoxy-3-O-methylhexopyranosyl)oxy]-5,11,14-trihydroxy-19-oxobufa-20,22-dienolide
- 61869-27-0/manganese(2+) ethane-1,2-diylbis(dithiocarbamate) - 2-(1,3-thiazol-4-yl)-1H-benzimidazole (1:1)
- 70632-10-9/N-[(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene]-2-[4-[[(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene]amino]phenyl]-1H-benzotriazole-5-amine dihydrochloride
- 5779-79-3/4,5-DIHYDRO-BENZ(K)ACEPHENANTHRYLENE
- 67656-35-3/2(1H)-Pyridinone,4-hydroxy-1-methyl-3- [tetrahydro-5-methyl-6-(1,3,5-trimethyl-1- heptenyl)-2H-pyran-2-yl]-5-(2,3,4,5-tetrahydroxycyclopentyl)-,stereoisomer
- 3734-97-2/[2-(diethylthiophosphor-S-yl)ethyl]diethylammonium hydrogen oxalate
- 68908-75-8/Isocyanic acid, polymethylenepolyphenylene ester, polymer with 1,3-diisocyanatomethylbenzene, alpha-hydro-omega-hydroxypoly(oxy(methyl-1,2-ethanediyl)) ether with methyl beta-D-glucopyranoside (4:1) and alpha,alpha-(oxybis(butoxyphosphinylidene))bis(omega-hydroxypoly(oxy(methyl-1,2-ethanediyl))), isocyanate-terminated
- 114892-55-6/b-D-Galactopyranoside, (3b,5a,20S)-20-[(O-b-D-glucopyranosyl-(1®4)-O-2,6-dideoxy-3-O-methyl-b-D-arabino-hexopyranosyl-(1®4)-2,6-dideoxy-3-O-methyl-b-D-arabino-hexopyranosyl)oxy]-17-hydroxypregn-6-en-3-yl6-deoxy-3-O-methyl- (9CI)
- 130571-07-2/2-Propenamide,N,N-bis[3-(dimethoxymethylsilyl)propyl]-2-methyl-
- 262446-03-7/Fatty acids,C5-17-branched, 2,2-dimethyl-1,3-propanediyl esters
- 137944-60-6/N-(2-(Dimethylamino)ethyl)(1,4)benzodioxino(2,3-b)pyridine-6-carboxamide
- 54401-85-3/ETHYL 4-PYRIDYLACETATE
- 90046-13-2/Laminaria hyperborea, ext.
- 10291-27-7/2,5-bis(2-chloroanilino)terephthalic acid
- 3931-76-8/Methyl thiosilicate ((MeS)4Si)
- 13590-42-6/benzyl (S)-2,5-dioxooxazolidine-4-acetate
- 3531-45-1/Stannane, trimethylpropyl-
- 156910-31-5/Benzoic acid,4-[1-(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthalenyl)cyclopropyl]-
- 51294-37-2/[1,2,4]triazino[6,5-c]quinolin-2-amine
- 10436-39-2/Tetrachloropropene
- 85462-90-4/1-[(1-methylethyl)amino]-3-(4,5,6,7-tetrahydro-1-benzothiophen-3-yloxy)propan-2-ol hydrochloride
- 68568-82-1/calcium 2,2'-[[[(2-hydroxy-5-octylphenyl)methyl]imino]bis(ethane-1,2-diyliminomethylene)]bis[4-octylphenolate]
- 2800-34-2/2-[4-[(2-amino-4-oxo-5,6,7,8-tetrahydro-1H-pteridin-6-yl)methyl-formyl-amino]benzoyl]aminopentanedioic acid
- 112483-24-6/N-ethyl-N,N-dimethyl-4-(2-methyl-5-oxopyrrolidin-1-yl)but-2-yn-1-aminium iodide
- 93663-85-5/4,8-dichloro-2-phenylquinoline-3-carbonyl chloride
- 7688-64-4/O-acetylcamptothecin
- 7391-62-0/5-butyl-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione
- 25462-33-3/Dicarbamic acid 2-hexyltrimethylene ester
- 6952-68-7/[1,2,4]TRIAZOLO[4,3-A]PYRIDINE-3-THIOL
- 104568-55-0/3-Pyridinecarboxylicacid, 2-(3,4-dihydro-6-hydroxy-2,5,7,8-tetramethyl-2H-1-benzopyran-2-yl)ethylester