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74834-85-8

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74834-85-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74834-85-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,8,3 and 4 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 74834-85:
(7*7)+(6*4)+(5*8)+(4*3)+(3*4)+(2*8)+(1*5)=158
158 % 10 = 8
So 74834-85-8 is a valid CAS Registry Number.

74834-85-8Relevant articles and documents

Studies on phenothiazines, Part 6. Synthesis of 3-alkoxy-1-nitro-7-substituted phenothiazines via Smiles rearrangement

Gupta, R.R.,Jain, S.K.,Goswami, Naresh K.,Kalwania, G.S.

, p. 831 - 836 (2007/10/02)

Synthesis of 3-alkoxy-1-nitro-7-substituted phenothiazines via Smiles rearrangement is reported. 5-Alkoxy-2-amino-3-nitro benzenethiols prepared by hydrolytic fission of 6-alkoxy-4-nitrobenzo-1,2,3-dithiazolium chloride (The Herz Compound) were condensed with substituted o-chloro-nitrobenzenes and the diaryl sulfides so obtained were converted into formyl derivatives by formic acid.The latter on treatment with alkoholic KOH underwent Smiles rearrangement yielding 3-alkoxy-1-nitro-7-substituted phenothiazines.

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