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(+/-)-Erythro-methoxyephedrine is a chiral compound derived from ephedrine, a natural alkaloid found in plants like Ephedra. It is a racemic mixture, meaning it contains equal amounts of both the R and S enantiomers. This synthetic compound is used as an intermediate in the synthesis of various pharmaceuticals, including stimulants and decongestants. Due to its potential use in the illicit production of drugs like methamphetamine, it is often regulated and monitored by authorities. The compound's chemical structure consists of a phenethylamine backbone with a hydroxyl group at the beta position and a methoxy group at the para position on the aromatic ring. Its chemical formula is C11H17NO, and it has a molecular weight of 179.26 g/mol.

2226-33-7

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2226-33-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2226-33-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,2 and 6 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2226-33:
(6*2)+(5*2)+(4*2)+(3*6)+(2*3)+(1*3)=57
57 % 10 = 7
So 2226-33-7 is a valid CAS Registry Number.

2226-33-7Relevant academic research and scientific papers

Synthesis and Stereochemistry of Allenes. 2. Absolute Configurations of 1-Halogeno-3,4,4-trimethylpenta-1,2-dienes and 3,4,4-Trimethylpent-1-yn-3-ol

Elsevier, Cornelis J.,Mooiweer, Hendrik H.

, p. 1536 - 1539 (1987)

The absolute configuration of (+)-t-Bu(Me)C(OH)CCH ((+)-2a) has been reassigned S.This is shown by chemical correlation to its constitutional isomer (S)-t-Bu(H)C(OH)CCMe, applying organocopper (I) reactions of known anti stereochemistry.Reaction of LiCuX2 with esters of (+)-2a gives (-)-t-Bu(Me)C=C=C(H)X (X = Cl, 1a; X = Br, 1b).The R configuration is attributed to these levorotatory halogenoallenes, on the basis of the known anti stereochemistry of the 1,3-substitution and the S configuration of (+)-2a.These new assignments lift a considerable confusion in the literature concerning absolute configuration of 1a and 2a.Implications regarding (semi)empirical rules, relating the sign of the optical rotation of a chiral allene to its configuration, are discussed.

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