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137351-39-4

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137351-39-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137351-39-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,3,5 and 1 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 137351-39:
(8*1)+(7*3)+(6*7)+(5*3)+(4*5)+(3*1)+(2*3)+(1*9)=124
124 % 10 = 4
So 137351-39-4 is a valid CAS Registry Number.

137351-39-4Relevant articles and documents

Elaboration of 1-benzoyltetrahydroisoquinoline derivatives employing a Pictet-Spengler cyclization with α-chloro-α-phenylthioketones. Synthesis of O-methylvelucryptine

Silveira, Claudio C,Bernardi, Carmem R.,Braga, Antonio L.,Kaufman, Teodoro S.

, p. 8947 - 8950 (2007/10/03)

The reaction of N-tosyl-β-phenethylamines with α-chloro-α-phenylthioketones, leading to 1-benzoyl- and 1-pivaloyl-tetrahydroisoquinolines under modified Pictet-Spengler conditions, is described. The synthesis of O-methylvelucryptine employing this transformation as a key step is reported.

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