Carpenter's principles of human physiology . 78 CHEMICAL COMPOSITION OF THE Hydroohlorate of guanin. and crystallizes in oblique rhombic prisms, which are soluble in water and inboiling alcohol. Guanin, C6H6N50.—An amorphous, yellowish-white substance, nearlyYia. 53. insoluble in alcohol, ether, and water ; easy soluble in acids and alkalies. Byoxidation with potassium permanganate,guanin is converted into urea, oxalicacid, and oxyguanin. It constitutes thegreater part of the excrements ofspiders, but has also been found in thepancreas and liver, in muscle extract,and, as its name impor
Carpenter's principles of human physiology . 78 CHEMICAL COMPOSITION OF THE Hydroohlorate of guanin. and crystallizes in oblique rhombic prisms, which are soluble in water and inboiling alcohol. Guanin, C6H6N50.—An amorphous, yellowish-white substance, nearlyYia. 53. insoluble in alcohol, ether, and water ; easy soluble in acids and alkalies. Byoxidation with potassium permanganate,guanin is converted into urea, oxalicacid, and oxyguanin. It constitutes thegreater part of the excrements ofspiders, but has also been found in thepancreas and liver, in muscle extract,and, as its name imports, in guano. Itforms crystalline combinations withvarious acids, one of which is repre-sented in the adjoining woodcut, andalso with lime and , C5H4N402.—This substance, which was first found in the form ofoxide of xanthin in certain rare urinary calculi, is amorphous, and presents, bothin its chemical constitution and in the places where itis found, the closest analogy to hypoxanthin. It is solu-ble in 1400 parts of boiling and 14,500 parts of coldwater. It is
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectphysiology, bookyear1
