Basic information
- Standard SMILES
CN1C(=O)C=CC1=O- InChIKey
SEEYREPSKCQBBF-UHFFFAOYSA-N- Molecular formula
- C5H5NO2
- Average molar mass
- 111.1 g/mol
- Monoisotopic mass
- 111.0320284
Names & identifiers
- Preferred name
- N-Methylmaleimide
- IUPAC
- 1-methylpyrrole-2,5-dione
- English name
- N-Methylmaleimide
- Molecular formula
- C5H5NO2
- Molecular weight
- 111.1
Names & synonyms
N-Methylmaleimide930-88-1Maleimide, N-methyl-N-Methylmaleinimide1H-Pyrrole-2,5-dione, 1-methyl-P0TFZ8R21YNSC-57594DTXSID30239240RefChem:830735DTXCID50161731213-226-11-Methyl-1H-pyrrole-2,5-dione
Show more names
N-Methyl-MalemideN-Methylmaleimide>N-Methylmaleimide,97%N-Methylmaleimide,98+%
1-methylpyrrole-2,5-dioneN-methyl maleimide1-methyl-pyrrole-2,5-dioneMFCD00005508n-methylmaleimidmaleimide,n-methyl-1-methyl-2,5-dihydro-1H-pyrrole-2,5-dionemaleins|Aure-n-methylimid
Database identifiers
- CAS
930-88-1- PubChem CID
- 70261
- DTXSID
DTXSID30239240- ChEMBL
CHEMBL225037- ChEBI
CHEBI:232160- UNII
- P0TFZ8R21Y
- EC Number
- 213-226-1
- Nikkaji
- J41.604E
Properties
Computed structural properties
- XLogP
- -0.5
- Topological polar surface area
- 37.4 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 0
- Heavy atoms
- 8
- Formal charge
- 0
- Complexity
- 153
Experimental & physicochemical properties
Kovats Retention Index925.1
Physicochemical properties
- Melting point
- 94 · 94-96 °C (lit.)
- Boiling point
- 208.19 °C · 208.19°C (rough estimate)
- Density
- 1.3113 · 1.3113 (rough estimate)
- refractive index
- 1.426 · 1.4260 (estimate)
- storage temp.
- Keep in dark place,Sealed in dry,Room Temperature
- solubility
- Chloroform (Sparingly), Methanol (Slightly)
- form
- Crystals
- pka
- -2.18 · -2.18±0.20(Predicted)
- color
- Light yellow
- Water Solubility
- Slightly soluble in water.
- BRN
- 108550 · 108550
- InChI
- InChI=1S/C5H5NO2/c1-6-4(7)2-3-5(6)8/h2-3H,1H3
- InChIKey
- SEEYREPSKCQBBF-UHFFFAOYSA-N
- SMILES
- N1(C)C(=O)C=CC1=O
- CAS DataBase Reference
- 930 · 930-88-1(CAS DataBase Reference)
- EWG's Food Scores
- 1 · 1
- FDA UNII
- 0 TFZ8R21Y · P0TFZ8R21Y
- NIST Chemistry Reference
- N-Methylmaleimide(930-88-1)
- UNSPSC Code
- 12352100 · 12352100
- NACRES
- 22 · NA.22
- Symbol(GHS)
- 5 · GHS05,GHS07
- Signal word
- Danger
- Hazard statements
- 302 · H302-H314-H317
- Precautionary statements
- 260 · P260-P270-P280-P301+P312-P303+P361+P353-P305+P351+P338
- PPE
- 3 · Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
- Hazard Codes
- C
- Risk Statements
- 22 · 22-34-43-25-20/21
- Safety Statements
- 26 · 26-36/37/39-45
- RIDADR
- 1759 · UN 1759 8/PG 2
- WGK Germany
- 3 · 3
- RTECS
- 5600000 · ON5600000
- F
- 10 · 10-21
- HazardClass
- 6.1 · 6.1
- PackingGroup
- II
- HS Code
- 29241990 · 29241990
- Storage Class
- 8 A · 8A - Combustible corrosive hazardous materials
- Hazard Classifications
- 4 OralSkin · Acute Tox. 4 OralSkin Corr. 1BSkin Sens. 1
- Limited Quantities
- 1 L · 1.0 L (0.3 gallons) (liquid) or 1 Kg (2.2 lbs) (solid)
- Excepted Quantities
- Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)
Safety & regulation
GHS classification
GHS Classification
Danger
H302 (92.5%): Harmful if swallowed [Warning Acute toxicity, oral]；H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]；H317 (100%): May cause an allergic skin reaction [Warning Sensitization, Skin]
P260, P261, P264, P270, P272, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P330, P333+P317, P362+P364, P363, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 53 reports by companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.；Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Hazard information
Hazard Classes and CategoriesAcute Tox. 4 (92.5%)；Skin Corr. 1C (100%)；Skin Sens. 1 (100%)
Safety data
- F
- 10-21
- PPE
- Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
- wgk
- 3
- rtecs
- ON5600000
- ridadr
- UN 1759 8/PG 2
- hs_code
- 29241990
- risk_code
- 22-34-43-25-20/21
- Signal word
- Danger
- Symbol(GHS)
- GHS05,GHS07
- hazard_code
- C
- safety_code
- 26-36/37/39-45
- hazard_class
- 6.1
- Storage Class
- 8A - Combustible corrosive hazardous materials
- packing_group
- II
- Hazard statements
- H302-H314-H317
- Limited Quantities
- 1.0 L (0.3 gallons) (liquid) or 1 Kg (2.2 lbs) (solid)
- Excepted Quantities
- Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)
- Hazard Classifications
- Acute Tox. 4 OralSkin Corr. 1BSkin Sens. 1
- Precautionary statements
- P260-P270-P280-P301+P312-P303+P361+P353-P305+P351+P338
Chemistry & industry
Applications
UsesN-Methylmaleimide is an electron deficient olefin that acts as a thiol-blocking reagent.
Upstream & downstream products
Upstream raw materials
Downstream products
Suppliers50 total
国药集团化学试剂有限公司86-21-63210123 · [email protected]
梯希爱(上海)化成工业发展有限公司021-67121386 · [email protected]
阿诺西（上海）生物技术有限公司400-1107768 15058188853 · [email protected]
上海阿拉丁生化科技股份有限公司400-6206333 13167063860 · [email protected]
湖南韵邦生物科技股份有限公司85561037 15386497078 · [email protected]
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江苏星科元信息科技有限公司400-605-7200 15335295587
Dayang Chem (Hangzhou) Co.,Ltd.+86-0571-88938639 17705817739 · [email protected]
郑州鸿晟医药科技有限公司0371-55695890 15637198702 · [email protected]
毕佳索（上海毕得医药科技股份有限公司）400-6005915 · [email protected]
Syntechem Co.,Ltd[email protected]
上海迈瑞尔生化科技有限公司4006356688 18621169109 · [email protected]
武汉易泰科技有限公司上海分公司18930552037 · [email protected]
阿法埃莎（中国）化学有限公司400-6106006 · [email protected]
安耐吉化学&3A（安徽泽升科技股份有限公司）400-0056266 · [email protected]
湖北兴琰新材料科技有限公司13129948835 · [email protected]
上海瀚鸿科技股份有限公司021-54306202 13764082696 · [email protected]
United Life Science020-82099279 18988941402 · [email protected]
上海隆盛化工有限公司58099637 13585536065 · [email protected]
上海比阳实业有限公司+86-15021878111 · [email protected]
吉林中科研伸科技有限公司18143011203 · [email protected]
苏州启航生物科技有限公司18662190603;18151111370 · [email protected]
山东西亚化学有限公司13355009207 13355009207 · [email protected]
玛雅试剂+86 (573) 82222445 (0)18006601000 452520369 · [email protected]
天津希恩思生化科技有限公司400 638 7771 · [email protected]
上海勤利医药科技有限公司15921357166 · [email protected]
Connect Chemicals GmbH+49 2102 2077 19 · [email protected]
北京伊诺凯科技有限公司15652467323 · [email protected]
斯百全化学（上海）有限公司021-021-021-67601398-809-809-809 15221380277 · [email protected]
赛默飞世尔科技（中国）有限公司800-810-5118 · [email protected]
北京伊诺凯科技有限公司400-810-7969 010-59572699 · [email protected]
上海特伯化学科技有限公司+86-21-60341587 · [email protected]
江苏艾康生物医药研发有限公司025-66113011 13913916777 · [email protected]
TCI AMERICA800-4238616 · [email protected]
TOKYO CHEMICAL INDUSTRY CO., LTD.03-36680489 · [email protected]
TCI Europe320-37350700 · [email protected]
武汉卡诺斯科技有限公司153-37111468 15337111468 · [email protected]
Shanghai Witofly Chemical Co.,Ltd[email protected]
重庆星灿医药科技有限公司13594048950 19923294409 · [email protected]
成都零六生物科技有限公司400-1166-196 13458535857 · [email protected]
上海馨远医药科技有限公司021-24206007 13764915196 · [email protected]
上海鑫圭生物科技有限公司15121041756 · [email protected]
杭州杰恒化工有限公司0571-87396432 · [email protected]
青岛海智微元生物科技有限公司18317699790 18317699790 · [email protected]
凯试（上海）科技有限公司021-50135380 · [email protected]
普善实业（陕西）有限公司029-81310890 18165209495 · [email protected]
Sigma-Aldrich西格玛奥德里奇(上海)贸易有限公司021-61415566 800-8193336 · [email protected]
武汉峰耀同辉化学制品有限公司027-87466205 15377579727 · [email protected]
广东翁江化学试剂有限公司0751-2886766 13927870850 · [email protected]
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