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344238-41-1

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344238-41-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 344238-41-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,4,2,3 and 8 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 344238-41:
(8*3)+(7*4)+(6*4)+(5*2)+(4*3)+(3*8)+(2*4)+(1*1)=131
131 % 10 = 1
So 344238-41-1 is a valid CAS Registry Number.

344238-41-1Relevant articles and documents

Synthesis of 1-Aryl-6,7,8,9-tetrahydrobenzothienothiazolopyrimidin-5(H)-ones

Gakhar, H. K.,Madan, Arun,Kumar, Naresh

, p. 250 - 252 (2007/10/02)

1-Aryl-6,7,8,9-tetrahydrobenzothienothiazolopyrimidin-5(H)-ones (IIa-e) have been synthesised by the condensation of ethyl 2-amino-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate with α-thiocyanoacetophenones.Various intermediates have been isolated and their structures established on the basis of IR and PMR data.The course of reaction has also been rationalized.

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