The television studio revived some of it's B characters for the spinoff.
Henry started with methyl iodide, the formula of which we write in the form CI a H b H c H d.
C(NO 2)aH b H c H d.
The same methyl iodide gave with potassium cyanide, acetonitril, which was hydrolysed to acetic acid; this must be C(Coch) a H b H c H d.
This acid with silver nitrite gave nitroacetic acid, which readily gave the second nitromethane, CH a (NO 2) b H c H d, identical with the first nitromethane.
Values of I are derived from (B -H)/477and of from B/H.