Stone Era: Restarting Civilization

To make penicillin, the first step is to get sulfuric acid.

There are many ways to make sulfuric acid.

Pan Changgong knew that there was a natural sulfuric acid lake in the Futu Mountain area.

However, the gas emitted by the sulfuric acid lake is highly poisonous, and if you get hit, you will be instantly killed.

Pan Changgong doesn't know whether his current Constitution can withstand the toxicity, he has never tried it, and he doesn't want to try it.

There is also a safer method, which is by burning sulfur and sodium nitrate.

Pan Changgong collected a lot of sulfur. Futu Mountain has erupted many times in the past 3,000 years, and there are still many sulfur reserves on the surface.

Sodium nitrate can be extracted from saltpeter.

After getting the sulfuric acid, heat the sulfuric acid first, and then add a little salt.

Then make a dripper to collect the steam to form water droplets to capture the gas produced by the mixture of sulfuric acid and salt, which is hydrochloric acid.

Then heat the sulfur and add hydrochloric acid to get chlorosulfonic acid.

Then electrolyze the brine to get sodium hydroxide,

At this point, the progress of making penicillin is half completed.

Pan Changgong picked up a beaker, went to the corner to pee, and got ammonia water, which is also an important material for making penicillin.

Amber saw Pan Changgong coming over with ammonia water, and said with a slightly changed face, "Master Pan, you are..."

"Well, it's boo boo, it's the necessary material to make penicillin."

"That is to say, let my sister drink that?" Amber said tremblingly.

"..."

Next, sodium bicarbonate, aniline, and acetic anhydride are needed, and alcohol is needed to make these three, that is, ethanol

Pan Changgong took some coal and burned it, and coal tar was formed after the coal was burned.

Wash coal tar with hydrochloric acid, and then pour ethyl acetate made of wine and vinegar to get aniline.

Pour vinegar over burnt shells, add sulfuric acid to make glacial acetic acid, pass it through an iron pipe to make ketene, pour it back, and you get acetic anhydride

.

Then pour acetic anhydride into the aniline little by little. During this process, Pan Changgong was very cautious and told everyone to back off.

This step can be said to be the most dangerous step in making penicillin. If too much acetic anhydride is poured, it will explode when it reacts with aniline. It must be poured carefully and little by little.

After successful mixing, Pan Changgong obtained acetanilide.

Chlorosulfonic acid is then mixed into acetanilide to obtain acetaminobenzenesulfonyl chloride.

Then add the ammonia water of Pan Changgong to get acetaminophen sulfonamide.

After adding hydrochloric acid and boiling, penicillin can be obtained.

Because the materials are already there, although the process of making penicillin is very complicated, a lot of penicillin is produced in just a few hours.

Pan Changgong collected the penicillin in the form of white crystals, handed it to Amber, and ordered: "Give this to your sister Liuli. If it is pneumonia, it will recover within a few days."

Amber took the penicillin with a look of suspicion, but her sister's condition has become more and more serious recently, and the doctors in the village have nothing to do. Pneumonia is no different from a terminal illness in the era of backward medical treatment, so it can only be treated as a dead horse.

After the penicillin, Amber thanked her and rushed back to her village again impatiently.

Ishigami Senkuu suddenly came to Pan Changgong's side at this time, and said with a serious face: "Pan Changgong, I am really surprised that you can make penicillin. Your chemistry level is really extraordinary."

Pan Changgong smiled slightly, patted Ishigami Senkuu on the shoulder, turned and left.

Ishigami Senkuu looked at Pan Changgong who was walking away, and secretly made a decision in his heart.

the next day.

Just after dawn, Amber ran over in a hurry. The female soldier on guard couldn't see the situation in the jungle clearly. Hearing the movement, she immediately raised the wooden iron-tipped spear in her hand and shouted, "Who is it?"

"I'm Amber, I want to see Lord Pan immediately" Amber said anxiously

With the help of Chiba Xihe, Pan Changgong tidied up his clothes, and when he opened the door, he saw Amber who was anxiously pacing back and forth in the same place.

Pan Changgong: "What's going on? Amber, you rushed over so early"

Amber: "Master Pan, I gave my sister the penicillin you refined yesterday. At night, my sister's cough suddenly became very severe. It was not as severe as yesterday before."

"It turned out to be like this. Don't worry, this is a normal reaction. After all, I have had pneumonia since I was a child, and it has already become a deep-rooted chronic inflammation. When I first came into contact with the powerful effects of penicillin, I would definitely have a very violent reaction. .” Pan Changgong said calmly.

Amber: "Is that so? But my father and the others thought that there was something wrong with the penicillin. They forced me to explain the source of the drug. I, I just said it. Now they have rushed over with people, Let me come here and tell you in advance that this matter was caused by me, and since it was a misunderstanding, I will be responsible to the end."

Pan Changgong: "..."

Not long after, the people of the Ishigami village that Amber spoke of appeared outside the camp fence.

"They're here" Amber stood beside Pan Changgong and said worriedly.

There were more than 20 people who came here, all of them were young and middle-aged men. Amber said that there were only nearly a hundred people in Ishigami Village. Except for the old and weak, women and children, these 20 young and middle-aged people can be said to be the entire combat power of the village, right?

Among the group of people, a middle-aged man with blond hair and a strong figure standing at the front walked to the front and raised the spear in his hand. The handle of the spear was made of wood and the head of the spear was made of stone: "Who are you?" It's the leader, come out for me."

Liuli: "Father, please don't do this, it's all just a misunderstanding."

"Misunderstanding? After eating that thing called penicillin that you gave, my daughter, your elder sister Liuli's symptoms became more serious. Do you really think I, Obsidian, are stupid? Amber, what kind of madness did you get? That's it, do you still want to speak to these people with bad intentions? They obviously want to use your hands to get rid of my witch, so as to achieve some ulterior motives."

The fence built by Pan Changgong was very high, and these villagers did not see what was going on inside the camp. Those who hid behind the fence were all female soldiers holding cross-hairs or some iron weapons.

Pan Changgong blocked it, and Amber, who was about to continue speaking, shouted to the people below: "Boss Obsidian, this is indeed a misunderstanding."

"Hmph, what misunderstanding? Facts speak louder than words. Hurry up and hand over the antidote to me, and then offer some food as compensation. Otherwise, don't blame us for being rude."

A young man with golden hair and a strong figure stepped forward.

"Shut up, Magma, it's not your turn to speak here." Amber looked at the young man gloomyly and shouted.

The young man named Magma shrank his neck when he heard Amber scolding him.

Among the men in Ishigami Village, Magma has the highest force value. He once became the champion in the Imperial Tournament. The champion of the Imperial Tournament can marry the Miko and become the next village.

Amber hated magma very much, because she was disrespectful to her sister Liuli, so she shot and defeated magma.

Magma is only the number one force value among men in Ishigami village. Regardless of gender, Amber is the person with the highest force value in the village.

Although the strength is not as good as that of magma, but the sensitivity of agility skills is superior to that of magma.

It was also because of Amber's intervention that Magma failed to realize his ideal. He resented Amber very much in his heart, but he couldn't beat him.

Pan Changgong felt very strange hearing the names of these people, Amber, Obsidian, Magma.

These are all elements, ores, and geology-related names.

Pan Changgong: "Everyone, if I really have evil intentions, if I want to poison, after your witches take my medicine, it's not just as simple as aggravating the cough. Think about it carefully, yes Isn’t that the reason? I can assure you here, wait a few more days and keep taking the medicine, your witches will definitely be cured.”

The people of Ishigami village started whispering after hearing this.

Except for Magma and his little brother Mantle, everyone else is more rational and does not want to break out of "war" easily.

"In this case, let's wait for a few more days. If my daughter is really cured, we will definitely come to the door to apologize and make compensation, but if something happens to my daughter, hmph"

After speaking, Hei Yao turned around and left with everyone.

Pan Changgong shrugged, not taking Amber's father's words to heart.

These common people in front of me are not his opponents at all, if he really wants to do something, none of them can escape.

If it weren't for Amber's relationship, Pan Changgong wouldn't have talked to them well.

Amber heaved a sigh of relief after seeing everyone leave, and then said to Pan Changgong with a guilty expression, "Master Pan, I'm really sorry for causing you trouble."

Pan Changgong reached out and touched Amber's head: "Don't take it to heart, it's nothing"

After speaking, Pan Changgong turned and left.

However, his behavior made Amber blush. Primitive people like Amber are not as open as modern people. The behavior of touching the head is a very intimate behavior in Amber's view. Pan Changgong touched his head. This may represent a lot of embarrassing meanings.

If someone else did this, Amber would have punched him away, but if Pan Changgong, then that's another story....

As Pan Changgong was walking, he suddenly turned his head to look at Ishigami Senkuu behind him, and said with a puzzled expression: "Senkuu, the village where Amber lives is called Ishigami Village, which has the same pronunciation as your surname, do you think this is a coincidence? "

Ishigami Senkuu froze for a moment, then nodded: "Well, not only that, the names that those people reported just now are also very interesting. They are descendants of surviving humans. Obviously, their ancestors wanted to use this The way of fame, passing on knowledge.”

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