zepto

{
  "id": "NISTp10_-21",
  "unitsml_id": "p:zepto",
  "name": "zepto",
  "symbol": "z",
  "symbols": {
    "unicode": "z",
    "ascii": "z",
    "html": "z",
    "latex": "z",
    "id": "zepto",
    "mathml": "<mi>z</mi>"
  },
  "factor": "10^-21",
  "base": 10,
  "power": -21,
  "value": 1e-21,
  "units": [],
  "identifiers": [
    {
      "type": "nist",
      "id": "NISTp10_-21"
    },
    {
      "type": "unitsml",
      "id": "p:zepto"
    }
  ],
  "references": [
    {
      "type": "normative",
      "authority": "si-digital-framework",
      "uri": "http://si-digital-framework.org/SI/prefixes/zepto"
    },
    {
      "type": "informative",
      "authority": "ucum",
      "uri": "ucum:prefix:code:z"
    },
    {
      "type": "informative",
      "authority": "qudt",
      "uri": "http://qudt.org/vocab/unit/Zepto"
    }
  ]
}