When you've learned something you can move on to a real steroid monograph.
For USP ones you have to pay
As an example of something you can find online:
European pharmacopeia which is sometimes a bit less stringent than USA USP
http://library.njucm.edu.cn/yaodian/ep/EP501E/16_monographs/19_monographs_q-z/testosterone/1373e.pdf
Content: 97.0 per cent to 103.0 per cent (dried substance).
TESTS
Specific optical rotation (2.2.7): + 106 to + 114 (dried
substance).
...
System suitability: the chromatogram obtained with
reference solution (a) shows 3 clearly separated spots;
impurity D Rf = about 0.5; testosterone Rf = about 0.65;
impurity F Rf = about 0.7.
Limits:
— impurity D: any spot due to impurity D is not more
intense than the spot in the chromatogram obtained with
reference solution (c) (0.2 per cent),
— impurity F: any spot due to impurity F is not more
intense than the spot in the chromatogram obtained with
reference solution (d) (0.1 per cent).
Related substances. Liquid chromatography (2.2.29).
Test solution. Dissolve 0.100 g of the substance to be
examined in methanol R and dilute to 10.0 ml with the same
solvent.
...
Limits: use the chromatogram obtained with reference
solution (a) to identify the peaks due to impurities C and I:
— correction factor: for the calculation of content, multiply
the peak area of impurity I by 2.9,
— impurity C: not more than the area of the principal peak
in the chromatogram obtained with reference solution (b)
(0.5 per cent),
— impurity I: not more than twice the area of the principal
peak in the chromatogram obtained with reference
solution (c) (0.2 per cent),
— impurities A, B, E, G, H, J: for each impurity, not more
than the area of the principal peak in the chromatogram
obtained with reference solution (c) (0.1 per cent),
— any other impurity: for each impurity, not more than the
area of the principal peak in the chromatogram obtained
with reference solution (c) (0.1 per cent),
— total: not more than 1.2 times the area of the principal
peak in the chromatogram obtained with reference
solution (b) (0.6 per cent),
— disregard limit: 0.5 times the area of the principal peak
in the chromatogram obtained with reference solution (c)
(0.05 per cent).
IMPURITIES Specified impurities: A, B, C, D, E, F, G, H, I, J. A. R1 + R2 = R3 + R4 = O: androst-4-ene-3,17-dione (androstenedione), C. R1 + R2 = O, R3 = H, R4 = OH : 17α-hydroxyandrost-4- en-3-one (epitestosterone), D. R1 = R3 = OH, R2 = R4 = H : androst-4-ene-3β,17β-diol (∆4-androstenediol), E. R1 + R2 = O, R3 = O-CO-CH3, R4 = H: 3-oxoandrost-4-en-17β-yl acetate (testosterone acetate), B. R = C2H5 : 3-ethoxyandrosta-3,5-dien-17-one (androstenedione ethylenolether), J. R = CH3 : 3-methoxyandrosta-3,5-dien-17-one (androstenedione methylenolether), F. 17β-hydroxy-5α-androstan-3-one (androstanolone, stanolone), G. R1 + R2 = O : androsta-1,4-diene-3,17-dione (androstadienedione). H. R1 = OH, R2 = H : 17β-hydroxyandrosta-1,4-dien-3-one (boldenone), I. 17β-hydroxyandrosta-4,6-dien-3-one (∆6-testosterone).
SIMEC/CHEMTOX NEVER TESTED FOR THESE IMPURITIES
To approve a finished med the FDA requires a CERTIFICATE OF ANALYSIS OF THE RAW INGREDIENTS TOO
Reason why it's important to test raws to.w