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87688-47-9

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87688-47-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87688-47-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,6,8 and 8 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 87688-47:
(7*8)+(6*7)+(5*6)+(4*8)+(3*8)+(2*4)+(1*7)=199
199 % 10 = 9
So 87688-47-9 is a valid CAS Registry Number.

87688-47-9Downstream Products

87688-47-9Relevant articles and documents

EXTREMELY REACTIVE CARBON-CARBON DOUBLE BONDS-I; REACTIONS WITH 2-(9-XANTHYLIDENE)-, 2-(9-THIOXANTHYLIDENE)-, AND 2-(9-FLUORENYLIDENE)-INDANE-1,3-DIONE. A CONTRIBUTION ON THE STRUCTURE AND REACTIVITY OF NON-PLANAR C-C DOUBLE BONDS

Schoenberg, Alexander,Singer, Erich,Stephan, Werner,Sheldrick, William S.

, p. 2429 - 2438 (2007/10/02)

The compounds in the title (cf 1a, 1b and 2) react with various reagents, often under mild conditions, mostly by breaking of the central double bond.According to X-ray diffraction the central double bond of 2-(9-xanthylidene)indane-1,3-dione is inclined by 47.2 deg.The relationship between the structure and reactivity of the compounds in the title is discussed.

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