1 Consider the first atom of each part of the molecule. An atom with higher atomic number has higher priority. (e.g. I > Cl > C > H)  If the first atom of two groups is the same, consider the second atom(s) in the same way as the first. (e.g. -C(CH3)3 > -CH(CH3)2 > -CH2CH3 > -CH3).
1 You can also use a toilet plunger on your bathroom sink. 2  Fill up the sink with water first, the use the plunger vigorously on the drain just as you would a toilet. 3  This will lift and agitate any blockage in the drain. It will smell a bit like vinegar for about a day. 2  You can also use a toilet plunger on your bathroom sink. 3  Fill up the sink with water first, the use the plunger vigorously on the drain just as you would a toilet.
Nifedipine is approved to control high blood pressure and angina (chest pain). Classified as a calcium-channel blocker, nifedipine blocks the passage of calcium into cardiac and smooth muscle, like those of the uterus. And calcium is needed for the uterus to contract. Nifedipine is one of the most widely used and studied medications among the calcium-channel blockers to suppress preterm contractions. But the use of tocolytics is controversial. In 80 percent of women with suspected preterm labor, early delivery will not occur.