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ID: 9811
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GC/MS Graph
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GC/MS Graph
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ID: 9811
Name: Heroin/Fen
Other Names:
UniqueCode:More infoUnique Lookup Code is an alphanumeric string created by the submitter and included with the sample so anonymously submitted samples can be positively identified as the submitter's sample. AC2020B282
Marquis:More infoThe Marquis Test is a reagent field test conducted by placing a drop of reagent liquid onto a small sample of the material being tested. The chemicals in the reagent react differently with different chemicals, turning a variety of colors based on the what is in the material being tested. Unknown
Mecke:More infoAs with the Marquis Test, The Mecke Test is a reagent field test conducted by placing a drop of liquid reagent onto a sample of the material in question. Mecke reagent is primarily used for the identification of heroin and other opiates. Unknown
Mandelin:More infoThe Mandelin Test is a reagent field test conducted by placing a drop of liquid reagent onto a sample of the material in question. Mandelin is primarily used for the detection of ketamine and PMA. It is a mixture of ammonium metavanadate and concentrated sulfuric acid. Unknown
GC/MS:More infoThe GC/MS Lab Test  
Test Date: Feb 18, 2021
Pub. Date: Feb 18, 2021
Src Location: Pittsfield, MA
Submitter Loc: Pittsfield, MA
United States
Color: Brown / Tan
Size: 1 mg
Data Source: DrugsData
Tested by: DDL
Lab's ID: 21020003
Sold as: Not Specified
Expected to be: Not Specified
Brown or tan powder and cotton.

BTNX Fentanyl Test Strip (prior to sending in sample): Positive
Jul 21, 2021: Sample re-analyzed, Phenethyl-4-Fluoro-4-ANPP confirmed.

March 11, 2021: We have tentatively identified 9811-Unidentified-#2 (300 parts) as Phenethyl-4-Fluoro-4-ANPP. As far as we know, this chemical has never before been identified and is 'new in the literature'. The identification of this substance is based on extremely technical expert analytical chemistry. If you are a senior analytical chemist with expertise in fentanyl synthesis, please contact us to let us know what you think about this identification.

For everyone else in the world, we believe Phenethyl-4-Fluoro-4-ANPP is best thought of as a synthesis byproduct of fentanyl, not intentionally included by the manufacturer, that has no pharmacological effect, meaning it doesn't have any effect in humans at this dose level.

However, this identification must be considered tentative until a reference standard is available for us to compare to. We are publishing this as our tentative identification, although we do not know of any other lab in the world that has identified this substance.
March 11, 2021: We have tentatively identified 9811-Unidentified-#1 (1 part, with an MS peak at mz 215) as 4-Fluoro-N-(2-phenylethyl)aniline (CAS # 220751-29-1). Our experts are unwilling to speculate exactly why this substance is present in this sample, but they describe the general issue:

This and other unusual substances detected in opioid and fentanyl samples are possible synthesis byproducts resulting from thermal, oxidative, or lumi (light) breakdown of one of the intermediate substances present during synthesis. Or such chemicals might arise from too much acid or base additions during synthesis.
previously designated as unidentified (in Feb 2021) and since identified:

9811-Unidentified-#1: 1 part

9811-Unidentified-#2: 15 parts