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Home/Compounds/Pharmaceutical Intermediate/(8R,9S,10R,13S,14S)-13-methyl-2,3,6,7,8,9,10,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-17-one
C18H26O
258.4 g/mol
Pharmaceutical IntermediateDanger

Allylestrenol Impurity A

CAS3646-28-4EC222-878-6
Category
Pharmaceutical Intermediate
Compound Class
Steroid
Primary Use
Pharmaceutical Intermediate

Allylestrenol Impurity A is a steroid-related compound used as a pharmaceutical impurity reference standard. It is a tetracyclic ketone with a molecular weight of 258.

Pharmaceutical impurity reference standardQuality control testing in pharmaceutical manufacturingAnalytical method development for impurity profiling

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

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Related Compounds

ReferenceSame Category

2-[Benzyl(methyl)amino]-1-(3,4-dihydroxyphenyl)ethan-1-one

CAS36467-25-1

pharmaceutical intermediate

ReferenceSame Category

4-(2-Chloroethyl)morpholine hydrochloride

CAS3647-69-6

pharmaceutical intermediate

ReferenceSame Category

(S)-N-Piperidin-3-yl-acetamide

CAS364734-39-4

pharmaceutical intermediate

ReferenceSame Category

1-Benzhydrylazetane-3-carbonitrile

CAS36476-86-5

pharmaceutical intermediate

Safety Reference

Harmful
Harmful
Health Hazard
Health Hazard
Danger
H302Harmful if swallowed
H312Harmful in contact with skin
H332Harmful if inhaled
H350May cause cancer
H360May damage fertility or the unborn child

Customs Tariff Classification

The international HS code for Allylestrenol Impurity A (CAS 3646-28-4) is 2914.29.

HS code (international, 6-digit)

2914.29

EU CN code (8-digit)

2914 29 00

Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.

Identifiers
IUPAC Name

(8R,9S,10R,13S,14S)-13-methyl-2,3,6,7,8,9,10,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-17-one

InChIKey

OLYAEHZZXXLNQQ-QXUSFIETSA-N

SMILES

C[C@]12CC[C@H]3[C@H]([C@@H]1CCC2=O)CCC4=CCCC[C@H]34

Synonyms (4)
  • Allylestrenol Impurity A

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