Shanghai Nianxing Industrial Co., Ltd
China
Product Name: n-carbamoylmaleimide
Price: Check
Purity: 90.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 1H-Pyrrole-1-carboxamide,2,5-dihydro-2,5-dioxo-
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

3345-50-4

3345-50-4 structure

3345-50-4 structure

Name: n-carbamoylmaleimide
Chemical Name: 2,5-dioxopyrrole-1-carboxamide
CAS Number: 3345-50-4
Molecular Formula: C₅H₄N₂O₃
Molecular Weight: 140.09700
Create Date: 2018-06-05 08:00:00
Modify Date: 2025-08-25 16:48:19

Name	2,5-dioxopyrrole-1-carboxamide
Synonyms	2,5-DIOXO-3-PYRROLINE-1-CARBOXAMIDE EINECS 222-097-0 2,5-dioxo-2,5-dihydro-pyrrole-1-carboxylic acid amide N-carbamylmaleimide MFCD00014539 2,5-dihydro-2,5-dioxo-1H-pyrrole-1-carboxamide N-Carbamoylmaleimide N-Carbamoyl-maleinimid 3-Pyrrolinecarboxamide,2,5-dioxo 2,5-Dioxo-2,5-dihydro-pyrrol-1-carbonsaeure-amid

Density	1.658g/cm3
Boiling Point	307ºC at 760mmHg
Melting Point	157-160°C
Molecular Formula	C₅H₄N₂O₃
Molecular Weight	140.09700
Flash Point	139.5ºC
Exact Mass	140.02200
PSA	80.47000
Index of Refraction	1.628

CHEMICAL IDENTIFICATION

RTECS NUMBER :: UY7352700

CHEMICAL NAME :: 3-Pyrrolinecarboxamide, 2,5-dioxo-

CAS REGISTRY NUMBER :: 3345-50-4

BEILSTEIN REFERENCE NO. :: 0117919

LAST UPDATED :: 199712

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C5-H4-N2-O3

MOLECULAR WEIGHT :: 140.11

WISWESSER LINE NOTATION :: T5VMVTJ DVZ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 56 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#04857

Hazard Codes	Xi
Risk Phrases	R36/37/38
Safety Phrases	S26-S36/37/39
RTECS	UY7352700
HS Code	2925190090

105-61-3 structure

105-61-3

~87%

3345-50-4 structure

3345-50-4

Literature: Cytec Technology Corp. Patent: EP925283 B1, 2003 ; Location in patent: Page/Page column 9 ;

Precursor 1
105-61-3
DownStream 8
541-59-3 140-98-7 6951-81-1 6951-82-2
6970-97-4 69796-28-7 67309-56-2 6151-04-8

HS Code	2925190090
Summary	2925190090 other imides and their derivatives; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

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