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3-Pentachlorethyl-benzol-sulfonsaeure-(1)-chlorid, also known as 3-(pentachloroethyl)benzenesulfonic acid chloride, is a chemical compound with the molecular formula C7H2Cl7O2S. It is a derivative of benzenesulfonic acid, where one hydrogen atom on the benzene ring is replaced by a pentachloroethyl group, and the hydroxyl group of the sulfonic acid is replaced by a chlorine atom. 3-Pentachlorethyl-benzol-sulfonsaeure-(1)-chlorid is likely to be used in the synthesis of various organic compounds, potentially as an intermediate in the production of pharmaceuticals, agrochemicals, or other specialty chemicals. Due to its highly chlorinated nature, it may exhibit significant reactivity and should be handled with care, considering its potential environmental and health impacts.

836-81-7

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836-81-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 836-81-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,3 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 836-81:
(5*8)+(4*3)+(3*6)+(2*8)+(1*1)=87
87 % 10 = 7
So 836-81-7 is a valid CAS Registry Number.

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