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877662-88-9

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877662-88-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 877662-88-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,7,6,6 and 2 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 877662-88:
(8*8)+(7*7)+(6*7)+(5*6)+(4*6)+(3*2)+(2*8)+(1*8)=239
239 % 10 = 9
So 877662-88-9 is a valid CAS Registry Number.

877662-88-9Relevant articles and documents

Towards the rubromycins: An efficient synthesis of a suitable isocoumarin precursor, its lactam analogue, and palladium-catalyzed couplings

Brasholz, Malte,Luan, Xiaosong,Reissig, Hans-Ulrich

, p. 3571 - 3580 (2007/10/03)

6-Iodoisocoumarin 4 and its aza-analogue, 6-iodo-1-oxo-isoquinoline 29, were efficiently prepared from vanillin in seven and six steps, respectively. Key transformations in their syntheses were achieved by directed ortho-lithiation and variations of Horne

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