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3-methyl-2-butanesulfonyl chloride, also known as tert-butanesulfonyl chloride or TBS chloride, is an organic compound with the chemical formula C5H11ClO2S. It is a colorless liquid that is soluble in organic solvents and is widely used as a protecting group in organic synthesis, particularly in the protection of alcohols. TBS chloride reacts with alcohols to form tert-butylsulfonyl ethers, which are stable and can be selectively removed under mild conditions. This makes it a valuable tool in the synthesis of complex organic molecules, as it allows chemists to control the reactivity of specific functional groups. The compound is also used in the preparation of other sulfonyl derivatives and as an intermediate in the synthesis of pharmaceuticals and agrochemicals.

78429-87-5

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78429-87-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 78429-87-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,4,2 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 78429-87:
(7*7)+(6*8)+(5*4)+(4*2)+(3*9)+(2*8)+(1*7)=175
175 % 10 = 5
So 78429-87-5 is a valid CAS Registry Number.

78429-87-5Upstream product

78429-87-5Downstream Products

78429-87-5Relevant academic research and scientific papers

Studies on Sulphochlorination of Paraffins. IX. Regularities of the Sulphochlorination of Branched-chain Paraffins

Estel, D.,Mateew, K.,Pritzkow, W.,Schmidt-Renner, W.

, p. 262 - 268 (2007/10/02)

In the cases of 2-methylbutane and 2-methylpentane the formation of tertiary sulphochlorides in the sulphochlorination of the parent hydrocarbons could be established by means of 13C-n.m.r.-spectroscopy.The relative rates of the various C-H-bonds in 2-methylbutane, 2-methylpentane and 3-methylpentane in the sulphochlorination reaction were determined.The relative rates of the tertiary C-H-bonds in the sulphochlorination were considerably lower than the corresponding values for the chlorination of the branched-chain paraffins.

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