TY  - GEN
AU  - Craft,N E
AU  - Byrd,G D
AU  - Hilpert,L R
TI  - Preparation and certification of standard reference material 1507: 11-nor-delta 9-tetrahydrocannabinol-9-carboxylic acid in freeze-dried urine
SN  - 0003-2700
PY  - 1989///0703
KW  - Chromatography, High Pressure Liquid
KW  - Dronabinol
KW  - analogs & derivatives
KW  - Electrochemistry
KW  - Humans
KW  - Reference Standards
KW  - Spectrophotometry, Ultraviolet
N1  - Publication Type: Comparative Study; Journal Article; Research Support, U.S. Gov't, Non-P.H.S
UR  - https://doi.org/10.1021/ac00181a008
ER  -