3-[(E)-Ethylidene]-2-pyrrolidone, also known as 3-(E)-ethylidene-2-pyrrolidone, is an organic compound with the chemical formula C6H9NO. It is a colorless liquid with a molecular weight of 111.14 g/mol. 3-[(E)-Ethylidene]-2-pyrrolidone is characterized by its pyrrolidone ring structure, which contains a nitrogen atom, and an ethylidene group (CH=CH2) attached to the 3-position. It is used as an intermediate in the synthesis of various pharmaceuticals and agrochemicals, particularly in the production of certain antibiotics and other bioactive molecules. The (E)-configuration of the ethylidene group indicates the geometric arrangement of the double bond, with the hydrogen and ethyl groups on opposite sides of the double bond.

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Basic information
1. Product Name: 3-[(E)-Ethylidene]-2-pyrrolidone
2. Synonyms: (E)-3-Ethylidenepyrrolidin-2-one;3-[(E)-Ethylidene]-2-pyrrolidone;Corydalactam
3. CAS NO:930-94-9
4. Molecular Formula: C6H9 N O
5. Molecular Weight: 0
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 930-94-9.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: /
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 3-[(E)-Ethylidene]-2-pyrrolidone(CAS DataBase Reference)
10. NIST Chemistry Reference: 3-[(E)-Ethylidene]-2-pyrrolidone(930-94-9)
11. EPA Substance Registry System: 3-[(E)-Ethylidene]-2-pyrrolidone(930-94-9)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 930-94-9(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 930-94-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,3 and 0 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 930-94:
(5*9)+(4*3)+(3*0)+(2*9)+(1*4)=79
79 % 10 = 9
So 930-94-9 is a valid CAS Registry Number.

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