p-Hydroxyphenyl cyanate, also known as 4-hydroxyphenyl cyanate or 4-cyanophenol, is an organic compound with the chemical formula C7H5NO2. It is a white crystalline solid that is soluble in water, ethanol, and ether. p-hydroxyphenyl cyanate is derived from the parent compound phenol, where one of the hydrogen atoms on the para position (4th position) is replaced by a cyanate group (-OCN). p-Hydroxyphenyl cyanate is an important intermediate in the synthesis of various pharmaceuticals, agrochemicals, and other specialty chemicals. It is also used as a reagent in organic synthesis and as a building block for the preparation of various functional materials. Due to its reactivity, it is essential to handle p-hydroxyphenyl cyanate with care, as it can be toxic and may cause irritation to the skin, eyes, and respiratory system.
The CAS Registry Mumber 1703-99-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,0 and 3 respectively; the second part has 2 digits, 9 and 9 respectively. Calculate Digit Verification of CAS Registry Number 1703-99: (6*1)+(5*7)+(4*0)+(3*3)+(2*9)+(1*9)=77 77 % 10 = 7 So 1703-99-7 is a valid CAS Registry Number.