Cyclopentanol, 3-ethenyl-, cis- is an organic compound with the chemical formula C7H12O. It is a cyclic alcohol with a five-membered carbon ring, where one of the carbon atoms is bonded to an ethylene group (C2H4), and the hydroxyl group (-OH) is attached to the same carbon as the ethylene group. The "cis" configuration indicates that the hydroxyl group and the ethylene group are on the same side of the ring when viewed from the perspective of the remaining three carbon atoms. Cyclopentanol, 3-ethenyl-, cis- is an isomer of cyclopentanol, 3-ethenyl-, trans-, which has the hydroxyl group and the ethylene group on opposite sides of the ring. Cyclopentanol, 3-ethenyl-, cis- is used as a synthetic intermediate in the production of various chemicals and pharmaceuticals, and it is also found in some natural products.
The CAS Registry Mumber 7442-43-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,4 and 2 respectively; the second part has 2 digits, 4 and 3 respectively. Calculate Digit Verification of CAS Registry Number 7442-43: (6*7)+(5*4)+(4*4)+(3*2)+(2*4)+(1*3)=95 95 % 10 = 5 So 7442-43-5 is a valid CAS Registry Number.