It doesn't sound like you are making sure everything is sterile at all, that's mistake #1.
Other than that, Asante is right and 2C-B works great orally. Some people do like snorting 2C-X compounds like this for the briefer and more serious edgy intense effects, injecting is supposed to be like that without hurting the nose so much I guess.
Anyway much worse even than being unnecessary, injecting 2C-X compounds can feel really wrong and kind of dangerous. I have I.M.-ed 2C-C once and would never do it again, it wasn't worth the effects and gave me side-effects like shallow troubled breathing and other weird body load related effects.
What were you planning on anyway, intramuscular or intravenous? (I strongly recommend not doing either)
Also: check and use the info in this phenethylamine injection thread:
http://www.bluelight.org/vb/threads/157050-The-Big-amp-Dandy-Phenethylamine-Injection-Thread
(2C-B is a member of the phenethylamines)
IOW if I wanted to drink orally, what is the dose if the 1cc is 99.03% purity
For the dosage (oral or injected) you need the concentration which is measured in mg/ml, not in % purity or something like that. Check with your source.
Did it come in a vial exactly like this, including the rubber cap and everything? If not, it's not really meant for injecting anyway - did anyone tell you that or did you assume since it is liquid?
You seem to lack a lot of information.