(+/-)-2-Ethyliden-cyclohexyl-acetaldehyd, also known as 2-ethylidene-cyclohexyl acetaldehyde, is an organic compound with the molecular formula C9H14O. It is a chiral molecule, meaning it has two enantiomeric forms, which are mirror images of each other. (+/-)-<2-Ethyliden-cyclohexyl>-acetaldehyd is characterized by a cyclohexane ring with an ethylidene group (a carbon-carbon double bond) attached to the second carbon atom, and an acetaldehyde group (a carbonyl group bonded to two hydrogen atoms and an ethyl group) attached to the first carbon atom. It is an important intermediate in the synthesis of various pharmaceuticals, fragrances, and other organic compounds due to its unique structure and reactivity. The compound is typically synthesized through various chemical reactions, such as the aldol condensation of acetaldehyde with cyclohexanone, and can be used in the preparation of chiral building blocks for the development of enantiomerically pure compounds.

3991-40-0

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Basic information
1. Product Name: (+/-)-<2-Ethyliden-cyclohexyl>-acetaldehyd
2. Synonyms:
3. CAS NO:3991-40-0
4. Molecular Formula:
5. Molecular Weight: 152.236
6. EINECS: N/A
7. Product Categories: N/A
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: (+/-)-<2-Ethyliden-cyclohexyl>-acetaldehyd(CAS DataBase Reference)
10. NIST Chemistry Reference: (+/-)-<2-Ethyliden-cyclohexyl>-acetaldehyd(3991-40-0)
11. EPA Substance Registry System: (+/-)-<2-Ethyliden-cyclohexyl>-acetaldehyd(3991-40-0)
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: 3991-40-0(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 3991-40-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,9,9 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 3991-40:
(6*3)+(5*9)+(4*9)+(3*1)+(2*4)+(1*0)=110
110 % 10 = 0
So 3991-40-0 is a valid CAS Registry Number.

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