A method for the preparation of methanol by conversion of a mixture of fresh methanol synthesis gas and unconverted methanol synthesis separated from produced methanol in a low pressure separator and recycled and admixed to the fresh synthesis gas upstream the suction side of a make-up gas compressor.

A method for the preparation of methanol by conversion of a mixture of fresh methanol synthesis gas and unconverted methanol synthesis separated from produced methanol in a low pressure separator and recycled and admixed to the fresh synthesis gas upstream the suction side of a make-up gas compressor.

A method for the preparation of methanol by conversion of a mixture of fresh methanol synthesis gas and unconverted methanol synthesis separated from produced methanol in a low pressure separator and recycled and admixed to the fresh synthesis gas upstream the suction side of a make-up gas compressor.

A method for the preparation of methanol by conversion of a mixture of fresh methanol synthesis gas and unconverted methanol synthesis separated from produced methanol in a low pressure separator and recycled and admixed to the fresh synthesis gas upstream the suction side of a make-up gas compressor.

The present invention provides a process for purifying a monoterpene or sesquiterpene having a purity greater than about 98.5% (w/w). The process comprises the steps of derivatizing the monoterpene (or sesquiterpene) to produce a monoterpene (or sesquiterpene) derivative, separating the monoterpene (or sesquiterpene) derivative, and releasing the monoterpene (or sesquiterpene) from the derivative. Also encompassed by the scope of the present invention is a pharmaceutical composition comprising a monoterpene (or sesquiterpene) having a purity greater than about 98.5% (w/w). The purified monoterpene can be used to treat a disease such as cancer. The present monoterpene (or sesquiterpene) may be administered alone, or may be co-administered with radiation or other therapeutic agents, such as chemotherapeutic agents.

The present invention provides a process for purifying a monoterpene or sesquiterpene having a purity greater than about 98.5% (w/w). The process comprises the steps of derivatizing the monoterpene (or sesquiterpene) to produce a monoterpene (or sesquiterpene) derivative, separating the monoterpene (or sesquiterpene) derivative, and releasing the monoterpene (or sesquiterpene) from the derivative. Also encompassed by the scope of the present invention is a pharmaceutical composition comprising a monoterpene (or sesquiterpene) having a purity greater than about 98.5% (w/w). The purified monoterpene can be used to treat a disease such as cancer. The present monoterpene (or sesquiterpene) may be administered alone, or may be co-administered with radiation or other therapeutic agents, such as chemotherapeutic agents.

The present invention provides a process for purifying a monoterpene or sesquiterpene having a purity greater than about 98.5% (w/w). The process comprises the steps of derivatizing the monoterpene (or sesquiterpene) to produce a monoterpene (or sesquiterpene) derivative, separating the monoterpene (or sesquiterpene) derivative, and releasing the monoterpene (or sesquiterpene) from the derivative. Also encompassed by the scope of the present invention is a pharmaceutical composition comprising a monoterpene (or sesquiterpene) having a purity greater than about 98.5% (w/w). The purified monoterpene can be used to treat a disease such as cancer. The present monoterpene (or sesquiterpene) may be administered alone, or may be co-administered with radiation or other therapeutic agents, such as chemotherapeutic agents.

The present invention provides a method for reducing a metal of a sugar-alcohol compound, the method including the steps of (A) protecting a hydroxyl group of a sugar-alcohol compound containing metal impurities with a protecting group, (B) removing the metal impurities from the sugar-alcohol compound having the hydroxyl group protected with the protecting group, and (C) eliminating the protecting group of the sugar-alcohol compound from which the metal has been removed. There can be provided a method for reducing a metal of a sugar-alcohol compound that can provide a sugar-alcohol compound with a suitable quality for the semiconductor apparatus manufacturing process.

The present invention provides a method for reducing a metal of a sugar-alcohol compound, the method including the steps of (A) protecting a hydroxyl group of a sugar-alcohol compound containing metal impurities with a protecting group, (B) removing the metal impurities from the sugar-alcohol compound having the hydroxyl group protected with the protecting group, and (C) eliminating the protecting group of the sugar-alcohol compound from which the metal has been removed. There can be provided a method for reducing a metal of a sugar-alcohol compound that can provide a sugar-alcohol compound with a suitable quality for the semiconductor apparatus manufacturing process.

The present invention provides a method for reducing a metal of a sugar-alcohol compound, the method including the steps of (A) protecting a hydroxyl group of a sugar-alcohol compound containing metal impurities with a protecting group, (B) removing the metal impurities from the sugar-alcohol compound having the hydroxyl group protected with the protecting group, and (C) eliminating the protecting group of the sugar-alcohol compound from which the metal has been removed. There can be provided a method for reducing a metal of a sugar-alcohol compound that can provide a sugar-alcohol compound with a suitable quality for the semiconductor apparatus manufacturing process.