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841-95-2

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841-95-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 841-95-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,4 and 1 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 841-95:
(5*8)+(4*4)+(3*1)+(2*9)+(1*5)=82
82 % 10 = 2
So 841-95-2 is a valid CAS Registry Number.

841-95-2Relevant articles and documents

Quinolizidine compound and the manufacturing method thereof

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Paragraph 0324-0330; 0377-0383, (2021/02/19)

Provided are benzoquinolizidine and indoloquinolizidine derivative compounds prepared by performing Mannich reaction using Azza-Michahael response and DDQ oxidizer from tetrahydroisoquinoline or tryptoline, and to a process for preparing the same. The met

Synthesis of (±)-Tetrabenazine by Visible Light Photoredox Catalysis

Orgren, Lindsey R.,Maverick, Emily E.,Marvin, Christopher C.

, p. 12635 - 12640 (2016/01/09)

(±)-Tetrabenazine was synthesized in six steps from commercially available compounds. The key cyclization substrate was assembled rapidly via Baylis-Hillman and aza-Michael reactions. Annulation of the final ring was achieved through visible light photocatalysis, wherein carbon-carbon bond formation was driven by the oxidation of a tertiary amine. Solvent played a critical role in the photoredox cyclization outcome, whereas methanol led to a mixed ketal, acetonitrile/water (10:1) gave direct cyclization to (±)-tetrabenazine and occurred more rapidly.

Asymmetric synthesis of benzoquinolizidines: A formal synthesis of (-)-emetine

Guiles,Meyers

, p. 6873 - 6878 (2007/10/02)

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