 Nature right on nomenclature of compounds containing polyfunctional for more than one functional group. Nomenclature of compounds containing more than one functional group. If the compound has more than one functional group present, then we have to assign the priority into this. If the compound has more than one functional group, then one functional group will be primary. The one which has the maximum priority becomes the primary functional group, primary functional group and the other one becomes secondary functional group. We can have more than one secondary functional group also. The suffix in the molecule, if you write, that will be only for the primary functional group. We will have the suffix of primary functional group and for secondary functional group, we will write what? We will write prefix. First of all, you should know the priority order of various functional groups. Then only you can assign the priority, like which one has the maximum priority or the other priority and then we can write down the name. First we will write down that table, priority order of functional group we write down. Priority order of functional group, we will write here functional group. The staple you drop, this is prefix and this is suffix. Prefix and suffix. The first one we have COOH. Prefix is carboxylic and suffix is oecacean. So why do we need a prefix? It's not required. So actually only when we have, it is attached directly to the ring atom. We have over there then carbide behind the ring. But carboxylic acid prefix is not required. The next one we have SO3N. SO3N is sulfonic acid and prefix is sulfo. So how do we do that? So what is anhydride and carboxylic acid, how do you name it? We take one example. Sir could you also tell what the groups are called? This is carboxylic acid, this is sulfonic acid and I write it is carbonyl chloride. Carbonyl chloride is also called acid chloride. If it is X then acid aligns. Acid chloride you write down. This one is amyth. This is nitride, isonitride, this is aldehyde, ketone, alcohol, epoxy, alkene, alkyl. Anhydride and carboxylic acid we cannot have both because there is no prefix for anhydride. Why is it at the third position? This is the order given by IOPSE. It depends upon the acetic behaviour of carboxylic acid. In some book they have taken SO3H in the first position. There is a confusion in this. This is the priority artist. In some book they have given this on the first position and this on the second position. They made them. Acid chloride it is. If it is X then halide. This one carbonyl chloride. C is limitless. Cyanide is this. Cn-3 are true. Cyanide is this. So this carboxylic acid has also taken part in the bonding. And this also takes part in the bonding. So when this is taking part in the bonding then it is cyanide. When the nitride is taking part in the bonding it is isosaccharide. We call it as amythentate degas. So this one is amythentate degas. So what is the ligand? Ligands are electron paired donor. Floating is also a kind of ligand. All those actions are molecules because they have more than one size which can donate electron. Carbon can donate electron. Nitrogen can also donate electron. Amythentate degas. Ligands can also donate electron. Ligands can also donate electron. So where does this carboxylic acid go? Cn-3. We ask what is Cn-3 in the difference between the two? Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. Cn-3. See in this one we have two functional groups, aldehyde and ketone. Which one has higher priority? Aldehyde. Aldehyde, right? So we'll have this one in the primary functional group. And this one is secondary functional group. So we'll write the prefix of this and suffix of this. The numbering will start from here. One, two, three, four, five and six. So it is five. What is the prefix of ketone? Oxo. Oxo. Right? So five oxo, external functional functional. Five oxo, external functional. Right? Here also this is the secondary functional group. And this is the primary functional group. One, two, three and four. Four sinus butanus. Butanus. Butanus. Butanus. Butanus. Butanus. Butanus. Butanus. Butanus. Butanus. Butanus. Butanus. Butanus. Butanus. Butanus. Butanus. And this is the secondary functional group. So what is the secondary functional group? The three, three electrons after using the bond. This is actually the real thing. There is no pair on it. So look at this. This is 3, 1, 2, and 3. 1, 2, 3. No, it's 1. And this is 1 pair of, not 3, 1 pair of it. So this is the... Sir, that's a iso-sino. What is the name of... No, it is Sino. That's right. Oh, sorry sir. What is the name of this compound? Sino. See, when you write whole Sino, it means that the whole Kalman we have Sino group attached. Sino group attached. Sino group attached. Sino group attached. Oh, so it's iso-sino. So this will be 3 Sino group attached. Because the third one is Sino group attached. So we have 3 Sino... Well, I think each other wants to pay 10 KR. Propanoic. Propanoic acid. Yeah, I should pay. You have to put both parts of the Sino. Okay. 3 Sino propanoic acid. Propanoic acid. See that. Because when you write 4 Sino, it means 4 carbon atom. And Sino it means 1 more carbon atom. So total 5 carbon atom, which is what we get. That's right. So this one we won't count in functional in the parent chain, when this is present as the secondary function. Propanoic acid. I don't know if it's correct. Propanoic acid. Propanoic acid. Propanoic acid. Propanoic acid will use... as suffix. So it will be 2 suffixes? No. 1, 2, 3, 4, 5, 6. But that is... So we include the C of the function. I'll write the name here. Yes. Third question we have this. So this is substituent now. What is the prefix of this? Carboxylic, right? So it is methylcarboxylic. Right. It is 3-methylcarboxylic. X 1, 6 di... Di... 3-methylcarboxylic. So di... 3-methylcarboxylic. Di... 3-methylcarboxylic. 1, 6 di... 1, 6 di... Xn. 1, 1,6 di-oic acid. No. Sir, but shouldn't we carboxylic methylcarboxylic? That's the prefix? No. We can't have it attached with this. So this is primary and this contains this carboxylic. It should be carboxylic. Carboxylic is methyl. Yes, methyl. Carboxylic is CO2. But it is carboxylic methyl. No, no, no. 10 is 15. No, no, no. Methyl is the primary one. Methyl is the primary one. So that you can check out the problem. Sir, so is it not guarded? It's like in a garden. What would it be? Let's see. It's not guarded. No, we can't have this. But we have larger carventers. Motor carventers. We said carboxylic. So do we not car... No, carboxylic is what? It is CO2. And it is not ethyl. This is the primary function, bro. If you write CS3 here, then what is the answer? If you have CS3, 3-methyl is the function. So it is 3-methyl. But methyl, one of the hydrogen atoms, is substituted by this. Carboxylic methyl. Right, so carboxylic... So that's only the brass, right? So carboxylic is the hydrogen atom. No, CS2 is CO2. No, CS2 is CO2. So carboxylic is the 5-methyl. See, if you have CS3 here... No, no, sir. So I'm saying if this was... If it was a function of this thing, and if it was just CS3... Then it is the right answer. So only one sort of branch that the carboxylic part is not... Yes, because in the branch... The main branch is this one, CS2. Okay. And this contains what CO2 is? Carboxylic methyl. Carboxylic methyl. Carboxylic methyl. Carboxylic methyl. Carboxylic methyl. See, if you take this into the chain, then you should write full gas. And we cannot write because we can't change the primary function of the primary branch. So it's basically hydrogen. By CO2... You can do the same if you want. What is the name of this one? 2-cylinder. 1, 2, 3. 3-cylinder. 2-cylinder. 3-cylinder. 2-cylinder. 2-cylinder. 2-cylinder. 3-cylinder. 2-cylinder. 2-cylinder. So this is how we do this. When the molecule has more than one functional group, we'll assign the primary function to the building surface and the secondary building to the prefix one. Okay? Yes, epoxy. My epoxy method over here. Let's do that. This is how it works. Yes, epoxy is the prefix. Because it's... Because it's... It's position is very low. So... Because it will almost... It will have to stop here. Yeah, this should be prefix only. I have written this name. So... These are all prefix. Let's see this one. Okay? This is epoxy, right? 1, 2, 3. What is the name of this one? Here. Here. Second and third question. We have epoxy present. 2, 3, epoxy butane. Right? 2, 3, epoxy butane. For this one, it is 1, 2, and 3. 1, 2, epoxy propane. 1, 2, epoxy propane. 2, 3, epoxy epoxy propane. One more thing. All these are prefix. Right? For this, we have only prefix. Epoxy, E, and I. 2, 3. Another miscellaneous example, you see. If you have a molecule like this where oxygen is present in this. In the ring. So for oxygen, we'll write oxa. Oxygen here. We have sulfur present. We have nitrogen present here. In the molecule, you see. How many atoms are there in the ring? 6, including this. 1, 2, 3, 4, 5, 6. So we'll write oxa for oxygen. Cyclotexane. No, it is some it is a miscellaneous example. We don't take this as a normal rule that we have. Oxa means what? Oxacyclo means what? Your cyclic rings. Oxacyclo means oxygen is present in the ring. Okay? Oxacyclo hexane. We have total number of atoms present in the ring. Including the carbon and oxygen. If you have sulfur here. See, I have like an anhydride and a poly thing. What can we do? Finally something. Like would I say anhydride. Anhydride and sulfuric acid are same compound. No, you can any molecule you can write. Any combination you can write. But actually it is not possible. High acetic compound. With anhydride it won't form any compound. Okay? If sulfur is present, then we'll write high-out. Okay? Higher cyclohexane. Higher cyclohexane. Not that important. Just you write on this. If nitrogen is present, then as a as a cyclohexane. Okay? One hydrogen. So, so. But if this is cyclo, so cyclo including oxygen. Oxygen, yes. So this term means, this term means, oxygen is present in the ring. Thaya means, Sakhpan is present in the ring. Asa means, nitrogen is present. I can't write. Can we do those things we can't write. No, no, no. No, no. If we have an acid in all the other products, then we have to write. No, no, no. You can write. You can write. No, no. Same thing. You can write. You won't get it. But here, you won't write. First you write, higher, then also cyclohexane. So, so, so. Is it open? Oxygen. Oxygen. But you won't get this type. If it is there, then you have to write this. Oxygen. Oxygen. Oxygen. Oxygen. No, no. Oxygen. Oxygen. You don't have to write. Oxygen. Oxygen. Oxygen. Oxygen. Oxygen. Oxygen. Oxygen. 1, 2, 3, 4, 5, 6, 6 So it's 3, 6, 6, higher, it's cyclohexene So anything takes up a bit so it works Second, number 1 is the 4, 5, 6, 7, 8 Realize the actual exact point See I have a high line with what I do Now you and I just want to start if you also want those things If you have this one and this one Then we like the suffix of this and we write the prefix of this total format Or helo format And sir, can you give us examples where he and I are using the other suffixes See when you write this C-H, triple bond C-H This one Right Alkyl, double bond triple bond So here we'll have this is suffix and this is prefix Sir, now we're going to start from the right Yes So 1, 2, 3, 4 If you have C-H, 2 double bond C-H, C-O-O-H Suffix, prefix If you have only double bond, let it be prefix Because we have only one function from there But if you have this function and this function This is dominant from the rest No, no, sir