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MDMB-4en-PINACA 4en-PINACA. CAS number: 2504100-70-1. Molecular formula: C20H27N3O3. Molecular weight: 357.4 g/mol. Chemical parameters are listed in the product properties table.

Chemical name
methyl (2S)-3,3-dimethyl-2-[(1-pent-4-enylindazole-3-carbonyl)amino]butanoate
Other names
MDMB-4en-PINACA, 4en-PINACA
CAS number
2504100-70-1
Molecular formula
C20H27N3O3
Molecular weight
357.4 g/mol
Chemical form
Physical appearance
Country of origin
Condition
New

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Courier price 1895.00 JPY

Portion

1895.00 JPY / 1 g 1895.00 JPY

Pack: 1 g, 5 g, 10 g, 25 g, 100 g, 1000 g

Reference information

4.8 (18)

MDMB-4en-PINACA 4en-PINACA belongs to the “Cannabinoids (Indazole carboxamides)” category. Chemical name (IUPAC): methyl (2S)-3,3-dimethyl-2-[(1-pent-4-enylindazole-3-carbonyl)amino]butanoate. Other names: MDMB4enPINACA, MDMB 4en PINACA. CAS number: 2504100-70-1. Molecular formula: C20H27N3O3. Molecular weight: 357.4 g/mol.

Available portion sizes listed in RC Yakubutsu: 1 g, 5 g, 10 g, 25 g, 100 g, 1000 g. Orders ship via courier, parcel locker, or ready dead-drop pickup points on the map. Payment in Bitcoin (BTC) and Monero (XMR). Dead drop: Tokyo, Yokohama, Osaka, Nagoya, Sapporo, Fukuoka, Kobe, Kyoto. Cannabinoids (Indazole carboxamides): 4F-MDMB-BINACA 4F-MDMB-BUTINACA, 5F-MDMB-PINACA 5F-ADB, ADB-BUTINACA, ADB-FUBINACA. Analytical reference material strictly for laboratory research; not for human consumption. Verified identity and physicochemical parameters are shown in the product properties table.

Compare within “Cannabinoids (Indazole carboxamides)” — if you are looking for a related compound

Side-by-side comparison of chemical parameters, positional isomers, and available portion sizes in this structural class:

Compound Molecular formula Molar mass CAS number Portions & starting price Sheet
MDMB-4en-PINACA 4en-PINACA Current listing
C20H27N3O3 357.4 g/mol 2504100-70-1 1 g – 1000 g · 1895.00 JPY Current listing
5F-MDMB-PINACA 5F-ADB Structural homolog
C20H28FN3O3 377.5 g/mol 1715016-75-3 1 g – 1000 g · 1863.00 JPY View sheet →
4F-MDMB-BINACA 4F-MDMB-BUTINACA Same class (Cannabinoids (Indazole carboxamides))
C19H26FN3O3 363.4 g/mol 2390036-46-9 1 g – 1000 g · 1926.00 JPY View sheet →
ADB-BUTINACA Same class (Cannabinoids (Indazole carboxamides))
C18H26N4O2 330.4 g/mol 2682867-55-4 1 g – 1000 g · 1958.00 JPY View sheet →
ADB-FUBINACA Same class (Cannabinoids (Indazole carboxamides))
C21H23FN4O2 382.4 g/mol 1185282-00-1 1 g – 1000 g · 1989.00 JPY View sheet →

Comments

Nana · 16 Sep 2026 22:24 · 5/5

Colour and form like the card. Fine.

Zip held, nothing leaking at the sides. Faster than I thought, two days. Looks like any other parcel.

Riku · 26 Jul 2026 14:23 · 5/5

Looks dry, not clumped.

Another pack, batch like last time. Wrap had no holes, contents in place. Looks like any other parcel.

Haruto · 04 Jun 2026 06:21 · 5/5

Looks dry, not clumped.

Two layers, nothing poked through. As discreet as it needs to be, not more. Thursday it was already waiting, I didn't chase. Looks like any other parcel.

Hinata · 12 Apr 2026 22:20 · 5/5

Looks dry, not clumped.

Repeat of the last parcel, plus. Thursday it was already waiting, I didn't chase. Looks like any other parcel.

Sota · 19 Feb 2026 13:18 · 5/5

Discreet parcel

Ordinary sender, zero writing on the outside. Plain carton, wrap inside. Not a week, two or three days and done. Looks like any other parcel.

Customer · 15 Jan 2026 09:27 · 5/5

I sprayed the herb and it's the strongest I've ever smoked. 1g is enough for 100g of CBD. I recommend it

Customer · 29 Dec 2025 05:17 · 5/5

MDMB-4en-PINACA matches the photo, not swapped.

Amount matches, they didn't skim. Colour and form like the card. Fine. Looks like any other parcel.

Daiki · 06 Nov 2025 21:15 · 5/5

Like last time

Third round, the card still matches. Colour and form like the card. Fine. Looks like any other parcel.

Ren · 15 Sep 2025 14:13 · 5/5

Looks like last time, no surprise.

Repeat of the last parcel, plus. Colour and form like the card. Fine. Looks like any other parcel.

Sakura · 25 Jul 2025 06:12 · 5/5

Colour and form like the card. Fine.

Bitcoin landed, then they shipped. Weight matches the card, no tricks. Faster than I thought, two days. Looks like any other parcel.

Rin · 02 Jun 2025 22:10 · 4/5

Bag a bit damp

Inside ok, but the pack was moist. Two layers, nothing poked through. Sealed tight, nothing loose.

Yuto · 11 Apr 2025 14:09 · 4/5

MDMB-4en-PINACA matches the card photo, not swapped.

Sealed tight, nothing loose. Moisture on the bag, contents themselves fine. Three days and the pack was there.

Kaito · 18 Feb 2025 05:07 · 5/5

MDMB-4en-PINACA matches the card photo, not swapped.

Colour and form like the card. Fine. Fifth round, always fine. Looks like any other parcel.

Hana · 27 Dec 2024 21:06 · 5/5

Looks dry, not clumped.

Looks dry, not clumped. Three days and the pack was there. Looks like any other parcel.

Yui · 05 Nov 2024 13:04 · 4/5

Looks like last time, no surprise.

Inside ok, but the pack was moist. Vacuum bag, inside dry. Looks like any other parcel.

Aoi · 14 Sep 2024 06:03 · 5/5

Looks like last time, no surprise.

One message and it was clear. Bag sealed, nothing spilled. Weighed evenly, not by eye. Looks like any other parcel.

Mio · 23 Jul 2024 22:01 · 5/5

Pickup was quick

Looks dry, not clumped. Paid in the morning, there the day after next. Nothing odd on the envelope. Looks like any other parcel.

Mei · 01 Jun 2024 14:00 · 5/5

Looks like last time, no surprise.

For what arrived, I didn't overpay. Faster than I thought, two days. Weighed evenly, not by eye. Looks like any other parcel.

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