4336 17-Hydroxyprogesterone It serves as an intermediate in the biosynthesis of hydrocortisone and gonadal steroid hormones. It is derived from progesterone via 17-hydroxylase, a P450c17 enzyme, or from 17-hydroxypregnenolone via 3β-hydroxysteroid dehydrogenase/Δ5-4 isomerase. 17-Hydroxyprogesterone is a natural progestin and in pregnancy increases in the third trimester primarily due to fetal adrenal production. This hormone is primarily produced in the adrenal glands and to some degree in the gonads, specifically the corpus luteum of the ovary. Normal levels are 3-90 ng/dl in children, and in women, 15-70 ng/dl prior to ovulation, and 35-290 ng/dl during the luteal phase. Measurements of levels of 17-hydroxyprogesterone are useful in the evaluation of patients with suspected congenital adrenal hyperplasia as the typical enzymes that are defective, namely 21-hydroxylase and 11β-hydroxylase, lead to a build-up of 17OHP. In contrast, the rare patient with 17α-hydroxylase deficiency will have very low or undetectable levels of 17OHP. 17OHP levels can also be used to measure contribution of progestational activity of the corpus luteum during pregnancy as progesterone but not 17OHP is also contributed by the placenta. 68-96-2 6238 C21H30O3 330.5 White powder. 219 - 220°C 0.00648 mg/mL No indication of carcinogenicity to humans (not listed by IARC). This is an endogenously produced metabolite found in the human body. It is used in metabolic reactions, catabolic reactions or waste generation. 2014-08-29T06:13:56Z 2026-05-14T19:43:18Z 17-Hydroxyprogesterone C01176 17252 DB14570 3QZ true [H][C@@]12CC[C@](O)(C(C)=O)[C@@]1(C)CC[C@@]1([H])[C@@]2([H])CCC2=CC(=O)CC[C@]12C C21H30O3 InChI=1S/C21H30O3/c1-13(22)21(24)11-8-18-16-5-4-14-12-15(23)6-9-19(14,2)17(16)7-10-20(18,21)3/h12,16-18,24H,4-11H2,1-3H3/t16-,17+,18+,19+,20+,21+/m1/s1 DBPWSSGDRRHUNT-CEGNMAFCSA-N 330.4611 330.219494826 Endogenous Solid 3.17 HMDB00374 CHEMBL1062 6002 Schneider, Carlos; Silva, Mario; Zunza, Hilda; Becerra, Jose. Synthesis of 17.alpha.-hydroxyprogesterone from androstenedione. Boletin de la Sociedad Chilena de Quimica (1999), 44(2), 167-172. CHEM003242 (1R,3aS,3bR,9aR,9bS,11aS)-1-acetyl-1-hydroxy-9a,11a-dimethyl-1H,2H,3H,3aH,3bH,4H,5H,7H,8H,9H,9aH,9bH,10H,11H,11aH-cyclopenta[a]phenanthren-7-one 54.370000000000005 94.10529999999997 37.895190581319426 1 3 1 12.699646444874293 -3.8049652826185154 0 4 2.99 -4.05 2.93e-02 g/l