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doughmixer1982

Student
Jun 8, 2023
101
CAS# 76-74-4 is Pentobarbital
CAS# 57-33-0 is Pentobarbital Sodium

Hypothetically if I have a source for both of the above chemicals, which one should I order?
 
GrizzlyGrapefruit

GrizzlyGrapefruit

Student
Jun 17, 2019
121
They should contain the same active ingredient, Pentobarbital.

From the descriptions, it sounds like one is a liquid (CAS# 76-74-4 is Pentobarbital) and one is a salt/solid (CAS# 57-33-0 is Pentobarbital Sodium). It shouldn't matter which one you get, but if you get the salt form, you'll have to take into account the molecular weight of Sodium when determining your dose.
 
intr0verse

intr0verse

Experienced
Jan 29, 2021
222
CAS# 76-74-4 is Pentobarbital
CAS# 57-33-0 is Pentobarbital Sodium

Hypothetically if I have a source for both of the above chemicals, which one should I order?
Pentobarbital sodium CAS 57-33-0. The other one is the free acid, it won't dissolve in water and is poorly absorbed from the GI tract.
 
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