5 replies to this topic

[platypus]

What is the conversion factor between microMoles/liter and micrograms/milliliter?

Edited by platypus, 05 March 2008 - 04:49 PM.

[s123]

What is the conversion factor between microMoles/liter and micrograms/milliliter?

If you know the molecular weight of a chemical than you can convert the micromols to micrograms.
mol = mass / molecular weight

The molecular weight is the sum of the atomic masses (you can find those on a periodic table).

For example:

Water: H2O
Molecular weight = (atomic weight of hydrogen * 2) + atomic weight of oxygen = (2*1) + 16 = 18g/mol
If you have 5mols of water than this weighs:
5 = mass / 18 --> mass =5 * 18 = 90g

Micro means *10^-6

The molecular weight of ubiquinon (2 carbonyl groups and 10 isoprenyl units) is 250g/mol (C14H18O4).

So: 1 micromol ubiquinone = 250*10-6g = 250µg
1µmol/l = 250µg/l
1 µmol/l = 250*10-3µg/ml

Edited by s123, 05 March 2008 - 05:18 PM.

[platypus]

What is the conversion factor between microMoles/liter and micrograms/milliliter?

If you know the molecular weight of a chemical than you can convert the micromols to micrograms.
mol = mass / molecular weight

I know, but thanks anyway. What is the molecular mass of CoQ10, I could not figure that out with 5 minutes of Googling?

[s123]

What is the conversion factor between microMoles/liter and micrograms/milliliter?

If you know the molecular weight of a chemical than you can convert the micromols to micrograms.
mol = mass / molecular weight

I know, but thanks anyway. What is the molecular mass of CoQ10, I could not figure that out with 5 minutes of Googling?

I edited it in the post above. It's 250g/mol for ubiquinone But it depends, you can have ubiquinone or ubiquinol or ubisemiquinone. The difference in molecular weight is very small (1g/mol for each hydrogen, so a max difference of 2g/mol).

[krillin]

The molecular weight of ubiquinon (2 carbonyl groups and 10 isoprenyl units) is 250g/mol (C14H18O4).

That formula isn't even close. Each isoprenoid group has 5 carbons, which brings you to 50 even before you start counting the stuff on the ring.

C59H90O4 863.36 g/mol

[s123]

The molecular weight of ubiquinon (2 carbonyl groups and 10 isoprenyl units) is 250g/mol (C14H18O4).

That formula isn't even close. Each isoprenoid group has 5 carbons, which brings you to 50 even before you start counting the stuff on the ring.

C59H90O4 863.36 g/mol

Oh yes, I miscounted (forget to multiply by 10 ).

The molecular mass is indeed 863,36g/mol.