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Subject:
empirical formulas
Category: Health > Medicine Asked by: charlie248-ga List Price: $2.00 |
Posted:
17 Jul 2004 17:55 PDT
Expires: 16 Aug 2004 17:55 PDT Question ID: 375567 |
I need to know the difference between the empirical formulas for oxycocone and heroin, giving also the crystaline struture of both, noting the similarities and differences. This is in reguards to the pain management program my girlfriend is on. |
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There is no answer at this time. |
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Subject:
Re: empirical formulas
From: purkinje-ga on 17 Jul 2004 19:09 PDT |
The empirical formula is the same as the actual formula: Oxycodone - C18O3N Heroine - C21O5N The two are the same in structure except for oxycodone has a methoxy group at C3, and a ketone at C6, while heroin has a double methoxy group (-OCOCH3) at positions 3 and 6. The crystaline structure refers to how those molecules crystallize together-- are you asking what crystalline shapes they will assume? There's probably not a good answer for that. If you're trying to distinguish between heroine and an oxycontin pill, that won't really help you anyway since oxycontin has many excipients. Well, hope that helps! |
Subject:
Re: empirical formulas
From: purkinje-ga on 17 Jul 2004 19:30 PDT |
Sorry, I totally forgot to count the hydrogens! The CORRECT formulas (I also forgot to count an -OH group on oxycodone) are: C18O4NH29 C21O5NH29 |
Subject:
Re: empirical formulas
From: arsenic-ga on 18 Jul 2004 13:13 PDT |
Heroin gives orthorhombic plates or tablets when crystallized from ethyl acetate, oxycodone gives long rods from alcohol. (The tautomeric form of oxycodone gives from alcohol strongly refringent scales) Source: The Merck Index 12th ed. |
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